Trane Tracer TD7 User manual

R

LC-

S

VU006A-E

4

Tracer™ TD7 with UC 80

0

for RTHD chillers

User

G

uid

e

Ori

g

inal instruction

s

RLC-

S

VU006A-E4

2

Copyrigh

t

A

ll rights reserved

This document and the information in it are the property of Trane and may not be

used or re

p

roduced in whole or in

p

art, without the written

p

ermission of Trane.

Trane reserves the ri

g

ht to revise this publication at any time and to make chan

g

es

to its content without obligation to noti

f

y any person o

f

such revision or change.

Trademark

s

TD7, RTHD Trane, the Trane logo, and Tracer are trademarks o

f

Trane. All trademarks

re

f

erenced in this document are the trademarks o

f

their respective owners.

e

Tabl

e

o

f

Cont

e

nts

RLC-

S

VU006A-E

4

3

General Recommendations ................................................................................................... 4

Units with Nitrogen Charge Option .....................................................................................

.

5

Installer-

S

upplied Component

s

.............................................................................................

5

Power Supply Wirin

g

..............................................................................................................

5

Control Power Su

pp

l

y

............................................................................................................

5

Motor

C

abl

e

.................................................................................................................................................

.

6

Motor Rotation

C

heck .................................................................................................................................

.

6

A

C

Mains

C

onnectio

n

.................................................................................................................................

.

6

Interconnectin

g

Wirin

g

...........................................................................................................

7

Chilled Water Pum

p

Contro

l

........................................................................................................................

7

Programmable Relay

s

............................................................................................................

7

Relay Assi

g

nments Usin

g

Tracer™ T

U

..................................................................................

9

Low Volta

g

e Wirin

g

................................................................................................................

.

9

Emer

g

ency Sto

p

..........................................................................................................................................

.

9

External Auto/Sto

p

......................................................................................................................................

.

9

Ice Buildin

g

Option ...............................................................................................................

10

External Chilled Water Set

p

oint (ECWS) O

p

tio

n

................................................................

10

External Demand Limit Set

p

oint (EDLS) O

p

tion ..............................................................

.

10

EDL

S

and ECW

S

Analo

g

Input

S

i

g

nal Wirin

g

Details:

........................................................

1

Chilled Water Reset

(

CWR

)

....................................................................................................

11

Communications Int

e

rfac

e

..................................................................................................

1

2

LonTalk™ Interface

(

LCI-C

)

........................................................................................................................ 12

BACnet Pr

o

t

o

c

o

l .......................................................................................................................................

.

12

BACnet Testing Laboratory (BTL) Certiﬁ catio

n

......................................................................................... 12

Mo

d

b

us

RTU

P

r

o

t

o

c

ol

................................................................................................................................12

O

v

e

rvi

ew

...............................................................................................................................

1

3

UC800 S

p

eciﬁ cation

s

...........................................................................................................

1

3

Wirin

g

and Port Description

s

...................................................................................................................

.

1

3

C

o

mmunicati

o

n Inter

f

ace

s

........................................................................................................................

1

3

R

otar

y

Switches .........................................................................................................................................

.

1

3

LED Descri

p

tion and O

p

eratio

n

...............................................................................................................

.

1

3

Tracer TD7 O

p

erator Interface ..............................................................................................

14

Tr a c

e

r™ TU

............................................................................................................................

14

S

tarter Diagnostic

s

...............................................................................................................

17

Main Processor Diagnostics ...............................................................................................

.

20

Communication Diagnostics

...............................................................................................

26

Operator Display Diagnostics and Messages ...................................................................

.

2

9

RLC-

S

VU006A-E4

4

I

nstallation El

e

ctrical

General Recommendation

s

As you review this manual, kee

p

in mind that:

•

All ﬁ eld-installed wirin

g

must conform to European

g

uidelines and any applicable local codes. Be sure to

satis

f

y proper equipment grounding requirements per

European guidelines.

•

Compressor motor and unit electrical data (including

motor kW, voltage utilization range, rated load amps)

is listed on the chiller nameplate.

•

All ﬁ eld-installed wiring must be checked for proper

terminations, and for possible shorts or grounds.

N

ote

:

Always refer to wiring diagrams shipped with

:

c

hiller or unit submittal

f

or s

p

eci

ﬁ

c electrica

l

s

chematic and c

o

nnecti

o

n inf

o

rmati

o

n

.

W

ARNIN

G

Proper Field Wirin

g

and

G

roundin

g

Required

!

All ﬁ eld wiring MUST be performed by qualiﬁ ed

personnel. Improperly installed and grounded ﬁ eld

wirin

g

poses FIRE and ELECTR

O

CUTI

O

N hazards. To

avoid these hazards,

y

ou MUST follow re

q

uirements for

ﬁ eld wiring installation and grounding as described in

local

e

l

e

ctrical cod

e

s. Failur

e

to follow cod

e

could r

e

sult

i

n

d

eat

h

or ser

i

ous

i

n

j

ury.

W

ARNIN

G

Hazardous Volta

g

e w/

C

apacitors!

Disconnect a

ll

e

l

ectric power, inc

l

uding remote

disconnects and dischar

g

e all motor start/run and AFD

(

Adaptive Frequency™ Drive

)

capacitors before servicing.

Follow proper lockout/ta

g

out procedures to ensure the

power cannot be inadvertent

l

y ener

g

ized.

•

For variable

f

requency drives or other ener

g

y storin

g

com

p

onents

p

rovided by Trane or others, re

f

er to the

a

pp

ro

p

riate manu

f

acturer’s literature

f

or allowable

waiting periods for discharge of capacitors. Verify

with an appropriate vo

l

tmeter that a

ll

capacitors have

di

sc

h

ar

g

e

d.

•

DC bus capacitors retain hazardous voltages after

i

nput power has been disconnected. Fo

ll

ow proper

lockout/ta

g

out procedures to ensure the power cannot

b

e inadvertently energized. After disconnecting input

p

ower, wait ﬁ ve

(

5

)

minutes for the DC capacitors to

discharge, then chec

k

the vo

l

tage with a vo

l

tmeter.

M

ake sure DC bus capacitors are dischar

g

ed

(

0 VDC

)

b

e

f

ore touchin

g

any internal components

.

Failur

e

to follow th

e

s

e

instructions could r

e

sult in d

e

ath

or serious injury.

For additional information regarding the safe discharg

e

o

f ca

p

acitors, see “Ada

p

tive Fre

q

uency™ Drive (AF

D

3

)

3

C

apacitor Dischar

g

e,” p. 28 and PR

O

D-SVB06A-EN.

W

ARNIN

G

Hazardous Volta

g

e - Pressurized Burnin

g

Fluid

!

B

efore removin

g

compressor terminal box cover for

servicin

g

, or servicin

g

power side of control panel,

C

LOSE COMPRESSOR DISCHARGE SERVICE VALVE

and disconnect all electric power includin

g

remote

d

isconnects. Dischar

g

e all motor start/run capacitors.

Follow lockout/tagout procedures to ensure the

p

ower cannot be inadvertently energized. Verify with

an appropriate voltmeter that all capacitors have

di

sc

h

arge

d

.

T

he compressor contains hot, pressurized refri

g

erant.

M

otor terminals act as a seal against this refrigerant.

C

are should be taken when servicin

g

NOT to dama

g

e or

l

oosen motor termina

l

s.

Do not operate compressor without termina

l

box cover

i

n

p

lace.

Failure to follow all electrical safety precautions could

result in death or serious in

j

ury

.

For additional in

f

ormation regarding the sa

f

e discharg

e

o

f ca

p

acitors, see “Ada

p

tive Fre

q

uency™ Drive (AF

D

3

)

3

C

apacitor Dischar

g

e,” p. 28 and PR

O

D-SVB06A-EN.

N

O

TICE

:

Use Co

pp

er Conductors Only!

Unit terminals are not designed to accept other types

of conductors. Failure to use copper conductors could

resu

l

t in equipment damage

.

Important:

To prevent control malfunctions, do not run

:

l

ow volta

g

e wirin

g

(<30 V) in conduit wit

h

c

on

d

uctors carrying more t

h

an 30 vo

l

ts.

RLC-

S

VU006A-E

4

5

In case of drive servicin

g

only

W

ARNIN

G

DISCHARGE TIME!

Frequency converters contain DC-link ca

p

acitors that

can remain char

g

ed even when the

f

requency converter

is not powered. To avoid electrical hazards, disconnect

AC mains, any permanent magnet type motors, and

any remote D

C

link power supplies, including battery

backu

p

s, UPS and DC-link connections to other

frequency converters. Wait for the ca

p

acitors to fully

dischar

g

e be

f

ore per

f

ormin

g

any service or repair work.

The amount of wait time is listed in the Dischar

g

e Time

table. Failure to wait the speciﬁ ed time after power has

been removed before doin

g

service or repair could result

i

n

d

eat

h

or ser

i

ous

i

n

j

ury.

Table 1. Capacitor Discharge Times

V

olta

ge

Po

we

r

M

inimum waitin

g

t

ime

[

min

]

3

80-500 V 9

0

-2

50

kW

20

3

15-800 kW

40

Units with Nitro

g

en Char

g

e

O

ptio

n

For units with nitro

g

en char

g

e option (model number

di

g

it 15 = 2

)

, the unit must NOT have shore power, or

unit power applied until the unit has been char

g

ed.

A

pplying power will drive

EXV

valves closed, and will

inhibit sufﬁ cient vac for unit char

g

in

g

.

Installer-Su

pp

lied Com

p

onent

s

Customer wiring interface connections are shown in

t

h

e e

l

ectrica

l

sc

h

ematics an

d

connection

d

iagrams t

h

at

are shipped with the unit. The installer must provide the

followin

g

components if not ordered with the unit:

•

Power supply wirin

g

(

in conduit

)

for all ﬁ eld-wired

c

o

nnecti

o

ns.

•

All control

(

interconnectin

g)

wirin

g

(

in conduit

)

for

ﬁ eld supplied devices

.

•

Fused-disconnect switches or circuit brea

k

ers.

Power Supply Wirin

g

W

ARNIN

G

Proper Field Wirin

g

and Groundin

g

Required

!

All

ﬁ

eld wirin

g

MU

S

T be per

f

ormed by quali

ﬁ

ed

p

ersonnel. Improperly installed and grounded

ﬁ

eld

wiring poses FIRE and ELECTROCUTION hazards. To

avoid these hazards, you MUST follow requirements for

ﬁ

eld wirin

g

installation and

g

roundin

g

as described in

y

our local electrical codes. Failure to follow code could

r

esult in death or serious injury

.

A

ll power supply wirin

g

must

b

e sized and selected

a

ccordingly

b

y the project engineer in accordance

w

ith

EN

60204.

A

ll wiring must comply with local codes.

T

he installing

(

or electrical

)

contractor must provide and install the

s

ystem interconnectin

g

wirin

g

, as well as the power

s

upply wirin

g

.

I

t must

b

e properly sized and equipped

w

ith the a

pp

ro

p

riate fused disconnect switches

.

The type and installation location(s) of the fused

d

isconnects must com

p

ly with all a

pp

licable codes.

N

OTICE:

U

se Co

pp

er Conductors

O

nly!

U

nit terminals are not desi

g

ned to accept other types

o

f

conductors. Failure to use copper conductors could

r

esult in equipment damage

.

Cut holes into the sides of the control

p

anel for the

a

ppropriately-sized power wiring conduits.

T

he wiring

i

s passed throu

g

h these conduits and connected to the

terminal bloc

k

s, optional unit-mounted disconnects, or

H

ACR ty

p

e breakers.

The hi

g

h volta

g

e ﬁ eld-provided connections are made

through patch plate on the right side o

f

the panel. The

low voltage connections are made through

k

noc

k

outs

p

rovided on the le

f

t side o

f

the panel. Additional grounds

may be required for each 115 volt power supply to the

u

nit. Green lu

g

s are provided for 115V customer wirin

g.

Control Power Supply

The unit is e

q

ui

pp

ed with a control

p

ower transformer.

I

t is not necessary to provide additional control power

v

oltage to the unit.

N

o other loads should

b

e connected

to the control power transformer

.

A

ll units are factory-connected for appropriate labeled

v

oltages.

I

nstallation El

e

ctrical

RLC-

S

VU006A-E4

6

I

nstallation El

e

ctrical

Motor Cable

The motor must be connected to terminals U/T1/96, V/

T2/97, W/T3/98. Earth (ground) to terminal 99. All types o

f

three-

p

hase asynchronous standard motors can be used

with a frequency converter unit. The factory setting is for

clockwise rotation with the

f

requency converter output

c

o

nnected as f

o

ll

o

ws:

Table 2.

Terminal n

o

.

F

uncti

on

96, 97, 98, 99

M

ains U/T1, V/T2, W/T3

E

arth (

g

round)

Motor Rotation Ch

e

c

k

The direction of rotation can be chan

g

ed by switchin

g

two phases in the motor cable or by chan

g

in

g

the settin

g

of 4-10 Motor

Sp

eed Direction.

Table 3.

A motor rotation check can be performed using1-28

Motor Rotation Check and

f

ollowing the steps shown in

t

h

e

d

isp

l

ay

.

A

C

Mains

C

onn

e

ctio

n

•

Size wirin

g

is based upon the input current of the

f

re

q

uency converter

•

Comply with local and national electrical codes for

c

ab

le size

s

•

C

onnect 3-phase A

C

input power wirin

g

to terminals

L1, L2, and L3

(

see Figure 1

)

Figure 1. Connecting to AC Mains

Table 4.

1

Mains c

o

nnecti

o

n

2

M

otor connection

•

Earth

(

ground

)

the cable in accordance with the

instructions provided

•

All

f

requency converters may be used with an isolated

input source as well as with earth

(g

round

)

reference

p

ower lines. When su

pp

lied from an isolated mains

source

(

IT mains or ﬂ oating delta

)

or TT/TN-S mains

w

ith a grounded leg

(

grounded delta

)

, set 14-50 RFI

Filter t

o

O

FF

.

When off, the internal RFI ﬁ lter capacitors between

the chassis and the intermediate circuit are isolated to

avoi

d

amage to t

h

e interme

d

iate circuit an

d

to re

d

uce

earth (ground) capacity currents in accordance with

IE

C

61800-3.

•

T

erminal

U

/

T

1/96

connected to

U

-

p

hase

•

Termin

a

l V

/

T2

/9

7

connected to

V

-

p

hase

•

Terminal W/T

3

/98

connected to

W

-

p

hase

RLC-

S

VU006A-E

4

7

Interconnecting Wirin

g

C

hilled Water Pump

C

ontrol

NOTICE:

E

quipment Dama

g

e

!

If the microprocessor calls for a pump to start and

water does not ﬂ ow, the evaporator may be damaged

catastrophically. It is the responsibility of the installin

g

contractor and/or the customer to ensure that a pump

will always be running when called upon by the chiller

c

o

ntr

o

ls.

An evaporator water pump output relay closes when

the chiller is given a signal to go into the

A

uto mode

o

f

operation

f

rom any source. The contact is opened to

turn off the pump in the event of most machine level

dia

g

nostics to prevent the build up of pump heat.

The relay output is required to operate the Evaporator

Water Pum

p

(EWP) contactor. Contacts should be

compatible with 115/240 VAC control circuit. Normally,

the EWP rela

y

follows the AUTO mode of the chiller.

W

henever the chiller has no diagnostics and is in the

AUTO mode, re

g

ardless of where the auto command

is coming

f

rom, the normally open relay is energized.

When the chiller exits the AUT

O

mode, the rela

y

is timed

to open in an adjustable (usin

g

TU) 0 to 30 minutes.

The non-AUT

O

modes in which the pump is stopped,

include Reset,

S

to

p

, External

S

to

p

, Remote Dis

p

lay

S

to

p

,

S

topped by Tracer,

S

tart Inhibited by Low Ambient Temp,

and Ice Buildin

g

complete.

Table 5. Pump Relay Operation

Chiller Mod

e

R

ela

y

O

p

eratio

n

Au

t

o

I

nst

a

nt cl

o

se

I

ce Buildin

g

I

nst

a

nt cl

o

se

Tr

a

cer

O

verri

d

e Cl

o

se

S

to

p

Timed O

p

en

I

ce Com

p

lete

I

nstant

Op

en

D

ia

g

nostics

I

nstant

Op

en

When going from Stop to Auto, the EWP relay is

energized immediately. If evaporator water ﬂ ow is not

established in 20 minutes

(

for normal transition

)

or 4

minutes, 15 seconds (for

p

um

p

commanded ON due to

an override safety), the UC800 de-ener

g

izes the EWP

relay and generates a non-latching diagnostic. I

f

ﬂ

ow

returns (e.g. someone else is controlling the pump),

the diagnostic is cleared, the EWP is re-energized, and

norma

l

contro

l

resume

d

.

I

f evaporator water ﬂ ow is lost once it had been

established, the EWP relay remains energized and a

non-latching diagnostic is generated. If ﬂ ow returns, the

d

iagnostic is cleared and the chiller returns to normal

o

p

eration.

I

n

g

eneral, when there is either a non-latchin

g

or latchin

g

d

ia

g

nostic, the EWP relay is turned o

ff

as thou

g

h there

w

as a zero time delay. Exce

p

tions whereby the relay

continues to

b

e ener

g

ized occur with:

•

L

ow

C

hilled Water Temp. diagnosti

c

(non-latching)

(

unless also accompanied by an Evap Leaving Water

Temperature Sensor Diagnostic

)

o

r

•

L

oss o

f

Evaporator Water Flow diagnosti

c

(

non-

latching) and the unit is in the AUTO mode, after

i

nitially havin

g

proven evaporator water

ﬂ

ow.

P

ro

g

rammable

R

elay

s

A

pro

g

rammable relay concept provides for enunciation

o

f

certain events or states o

f

the chiller

,

selected

f

rom a

list of likely needs, while only using four physical output

r

elays, as shown in the ﬁ eld wirin

g

dia

g

ram. The four

r

elays are provided (

g

enerally with a Quad Relay Output

L

LID) as part of the Pro

g

rammable Relay Option. The

r

elay’s contacts are isolated Form C

(

SPDT

)

, suitable

for use with 120 VAC circuits drawing up to 2.8 amps

i

nductive, 7.2 amps resistive, or 1/3 HP and for 240 VAC

circuits

d

rawin

g

up to 0.5 amp resistive.

The list of events/states that can be assi

g

ned to the

p

rogrammable relays can be

f

ound in Table 6. The relay

w

ill be ener

g

ized when the event/state occurs.

I

nstallation El

e

ctrical

RLC-

S

VU006A-E4

8

I

nstallation El

e

ctrical

Table 6. Chiller events/status descriptions

E

vent

/

Stat

e

D

escri

p

tio

n

A

larm - Latchin

g

This output is true whenever there is any active dia

g

nostic that requires a manual

reset to clear, that effects the Chiller, the Circuit, or an

y

of the Com

p

ressors on a

c

ircuit. This classiﬁ cation does not include informational dia

g

nostics.

A

l

a

rm - A

u

t

o

Rese

t

This output is true whenever there is any active dia

g

nostic that could automatically

c

lear, that effects the Chiller, the Circuit, or an

y

of the Com

p

ressors on a circuit.

This classiﬁ cation does not include informational dia

g

nostics. If all of the auto

resettin

g

dia

g

nostics were to clear, this output would return to a false condition.

A

l

a

r

m

This output is true whenever there is any dia

g

nostic effectin

g

any component,

whether latchin

g

or automatically clearin

g

. This classiﬁ cation does not include

informational dia

g

nostics.

W

arnin

g

This output is true whenever there is any informational dia

g

nostic effectin

g

any

c

omponent, whether latchin

g

or automatically clearin

g

.

Chiller Limit M

od

e This output is true whenever the chiller has been runnin

g

in one of the Unloadin

g

t

yp

es of limit modes

(

Condenser, Eva

p

orator, Current Limit or Phase Imbalance

L

imit) continuously for the last 20 minutes. A

g

iven limit or overlappin

g

of different

limits must be in effect continuously for 20 minutes prior to the output becomin

g

true. It will become false, if no Unload limits are

p

resent for 1 minute. The ﬁ lter

prevents short duration or transient repetitive limits from indicatin

g

. The chiller

is considered to be in a limit mode for the

p

ur

p

oses of front

p

anel dis

p

la

y

and

a

nnunciation, only if it is fully inhibitin

g

loadin

g

by virtue of bein

g

in either the

“

hold” or “forced unload” re

g

ions of the limit control, excludin

g

the “limited

loadin

g

re

g

ion”. (In previous desi

g

ns, the “limit load” re

g

ion of the limit control

was included in the criteria for the limit mode call out on the front

p

anel and

a

nnunciation out

p

uts

)

C

ompressor Runnin

g

The output is true whenever any compressors are started or runnin

g

on the

c

hiller and false when no compressors are either startin

g

or runnin

g

on the chiller.

This status ma

y

or ma

y

not reﬂ ect the true status of the com

p

ressor in Service

P

um

p

down if such a mode exists for a

p

articular chiller.

Chiller He

ad

Press

u

re Relie

f

R

e

q

uest Rela

y

This relay output is ener

g

ized anytime the chiller is runnin

g

in one of the followin

g

modes; Ice Makin

g

Mode or Condenser Pressure Limit Control Mode continuously

for the duration s

p

eciﬁ ed b

y

the Chiller Head Relief Rela

y

Filter Time. The Chiller

H

ead Relief Relay Filter Time is a service setpoint. The relay output is de-ener

g

ized

a

n

y

time the chiller exits all above modes continuousl

y

for the duration s

p

eciﬁ ed b

y

the same Chiller Head Relief Rela

y

Filter Time.

RLC-

S

VU006A-E

4

9

R

elay Assignments Using

Tracer™ TU

Tracer™ TU Service Tool is used to install the

Programmable Relay Option package and assign any

o

f

the above list o

f

events or status to each o

f

the

f

our

relays provided with the option. (See “Tracer™ TU,”

for more information on the Tracer TU service tool.

)

The relays to be programmed are referred to by the

relay’s terminal numbers on the LLID board 1A10

.

The de

f

ault assignments

f

or the

f

our available relays o

f

the

P

rogramma

b

le

R

elay option are:

Table 7. Default assignments

R

ela

y

R

ela

y

0Terminals J2-1,2,3:

H

ead

p

ress.

R

ela

y

1Terminals J2-4,5,6:

L

imit m

od

e

R

ela

y

2Terminals J2 - 7,8,9:

A

l

a

r

m

R

ela

y

3Terminals J2 -10,11,12: CMP Runnin

g

Rela

y

If any of the Alarm/Status relays are used,

p

rovide

electrical power, 115 VAC with

f

used-disconnect to the

panel and wire through the appropriate relays

(

terminals

on 1A10

)

. Provide wirin

g

(

switched hot, neutral, and

g

round connections) to the remote annunciation devices.

Do not use

p

ower from the chiller’s control

p

anel

trans

f

ormer to power these remote devices. Re

f

er to the

ﬁ eld diagrams which are shipped with the unit

.

L

ow Voltage Wirin

g

The remote devices described below require low voltage

w

iring. All wiring to and from these remote input devices

to the Control Panel must be made with shielded, twisted

p

air conductors.

B

e sure to ground the shielding only at

the panel.

Important:

To prevent control malfunctions, do not run

:

low voltage wiring (<30 V) in conduit wit

h

c

onductors carryin

g

more than 30 volts.

E

mergency

S

to

p

U

C800 provides auxiliary control

f

or a customer

s

peci

ﬁ

ed/installed latching trip out. When this customer-

f

urnished remote contact 5K22 is

p

rovided, the chiller

w

ill run normally when the contact is closed.

W

hen the

contact o

p

ens, the unit will tri

p

on a manually resetta

b

le

d

ia

g

nostic.

T

his condition requires manual reset at the

chiller switch on the

f

ront o

f

the control

p

anel

.

Connect low volta

g

e leads to terminal strip locations

1A12. Refer to the ﬁ eld dia

g

rams that are shipped with

t

h

e unit.

S

ilver or gold-plated contacts are recommended. These

customer-furnished contacts must be compatible with 24

V

DC

,

12 mA resistive load.

E

xternal Auto/

S

to

p

I

f the unit requires the external Auto/

S

top function, the

i

nstaller must provide leads

f

rom the remote contacts

5K21 to the

p

ro

p

er terminals of the LLID 1A12 on the

contro

l

pane

l

.

T

he chiller will run normally when the contacts are

closed. When either contact opens, the compressor(s), if

operatin

g

, will

g

o to the RUN:UNLOAD operatin

g

mode

a

nd cycle o

ff

. Unit operation will be inhibited. Closure

o

f

the contacts will permit the unit to return to normal

operation.

F

ield-supplied contacts

f

or all low volta

g

e connections

must be compatible with dry circuit 24 VDC for a 12

mA resistive load. Refer to the ﬁ eld diagrams that are

sh

ippe

d

wit

h

t

h

e unit.

I

nstallation El

e

ctrical

RLC-

S

VU006A-E4

1

0

I

nstallation El

e

ctrical

These customer-supplied contact closures must

be compatible with 24 VDC, 12 mA resistive load.

Silver or gold plated contacts are recommended.

Ice Buildin

g

Optio

n

UC800 provides auxiliary control for a customer

speciﬁ ed/installed correct with contact closure 5K20 for

ice building i

f

so con

ﬁ

gured and enabled. This output

is known as the Ice Building

S

tatus Relay. The normally

open contact will be closed when ice building is in

progress and open when ice

b

uilding has

b

een normally

terminated either through

I

ce

T

ermination setpoint

b

eing

reached or removal of the Ice Buildin

g

command. This

output is

f

or use with the ice storage system equipment

or controls (provided by others) to signal the system

chan

g

es required as the chiller mode chan

g

es

f

rom

“

ice

b

uilding

”

to

“

ice complete

”

.

W

hen contact 5

K

12 is

p

rovided, the chiller will run normally when the contact

i

s open.

U

C

800 will accept either an isolated contact closure

(External Ice Building command) or a Remote

Communicated in

p

ut (Tracer) to initiate and command

the

I

ce

B

uildin

g

mode.

UC800 also provides a “Front Panel Ice Termination

S

etpoint”, settable through Tracer™ TU, and adjustable

from 20 to 31°F

(

-6.7 to -0.5°C

)

in at least 1°F

(

1°C

)

i

ncrements.

Note:

When in the Ice Building mode, and the

:

e

vaporator entering water temperature

d

rop

s

b

elow the ice termination setpoint, the chille

r

t

erminates the

I

ce

B

uildin

g

mode and chan

g

e

s

t

o the Ice Building

C

omplete Mode.

N

O

TICE

:

Equipment Dama

g

e!

Freeze inhibitor must be adequate for the leaving water

temperature. Failure to do so will result in dama

g

e to

system com

p

onents.

T

racer

™

TU

must als

o

b

e used t

o

ena

b

le

o

r disa

b

le

I

ce

Machine Control. This settin

g

does not prevent the Tracer

f

rom commandin

g

Ice Buildin

g

mode.

Upon contact closure, the U

C

800 will initiate an ice

building mode, in which the unit runs

f

ully loaded at all

times. Ice buildin

g

shall be terminated either by openin

g

the contact or

b

ased on the entering evaporator water

temperature. U

C

800 will not permit the ice building

mode to

b

e reentered until the unit has

b

een switched

out of ice building mode (open 5K12 contacts) and

then switched back into ice buildin

g

mode (close 5K12

contacts.)

In ice buildin

g

, all limits (freeze avoidance, evaporator,

condenser, current) will be ignored. All safeties will be

enforced.

If, while in ice building mode, the unit gets down to the

freeze stat setting (water or refrigerant), the unit will

shut down on a manually resettable diagnostic, just as in

normal o

p

eration.

Connect leads from 5K12 to the proper terminals of

1A15. Refer to the ﬁ eld diagrams which are shipped with

t

he unit.

Silver or gold-plated contacts are recommended. These

customer furnished contacts must be com

p

atible with

2

4 VD

C

, 12 mA resistive load.

External Chilled Water

S

etpoint

(

ECWS) Optio

n

The U

C

800 provides inputs that accept either 4-20 mA or

2

-10 VDC signals to set the external chilled water setpoint

(ECWS). This is not a reset function. The in

p

ut deﬁ nes the

setpoint. This input is primarily used with generic BAS

(

building automation systems

)

. The chilled water setpoint

set via the

T

racer

TD

7 or throu

g

h di

g

ital communication

with Tracer

(

Comm4

)

. The arbitration of the various

chilled water set

p

oint sources is described in the ﬂ ow

charts at the end

of

the secti

o

n

.

The chilled water setpoint may be chan

g

ed

f

rom a

r

emote location by sending either a 2-10 VD

C

or 4-20 mA

si

g

nal to the 1A14, terminals 5 and 6 LLID. 2-10 VD

C

and

4

-20 mA each correspond to a 10 to 65°F (-12 to 18°C)

external chilled water set

p

oint.

The following equations apply:

Voltage

S

ignal

As

g

enerated from external source VDC=0.1455*(ECWS) + 0.545

4

As

p

rocessed by UC800 ECWS=6.875*(VDC) - 3.7

5

Current Signal

As

g

enerated from external source mA=0.2909(ECWS) + 1.090

9

As

p

rocessed by UC800 ECWS=3.4375(mA) - 3.75

I

f the ECWS input develops an open or short, the LLID

will report either a very high or very low value bac

k

to

t

he main processor. This will

g

enerate an informational

d

iagnostic and the unit will de

f

ault to using the Front

P

anel

(

TD7

)

Chilled Water Setpoint

.

Tracer TU Service Tool is used to set the input signal type

from the factory default of 2-10 VDC to that of 4-20 mA.

T

racer

TU

is als

o

used t

o

install

o

r rem

o

ve the

E

xternal

Chilled Water Set

p

oint o

p

tion as well as a means to

enable and disable ECW

S

.

External Demand Limit Set

p

oint

(

EDLS

)

O

p

tio

n

Similar to the above, the UC800 also provides for an

optional External Demand Limit Setpoint that will accept

either a 2-10 VDC (default) or a 4-20 mA signal. The

D

emand Limit

S

etting can also be set via the Tracer TD7

or throu

g

h di

g

ital communication with Tracer (Comm4).

The arbitration o

f

the various sources o

f

demand limit is

d

escribed in the ﬂ ow charts at the end of this section. The

External Demand Limit

S

etpoint may be changed from a

r

emote location by hooking up the analog input signal to

t

he 1A14 LLID terminals 2 and 3. Re

f

er to the

f

ollowin

g

para

g

raph on Analo

g

Input Si

g

nal Wirin

g

Details.

RLC-

S

VU006A-E

4

1

The following equations apply for EDLS:

Volta

g

e Si

g

na

l

Current Si

g

nal

As

g

enerated from

external sourc

e

VDC+0.133*

(

%

)

-6.

0

mA=0.266*

(

%

)

-12.

0

As processed by

U

C

M

%=7.5*(VDC)+45.

0

%=3.75*(mA)+45.

0

If the EDLS input develops an open or short, the LLID

will report either a very high or very low value bac

k

to

the man processor. This will generate an in

f

ormational

diagnostic and the unit will de

f

ault to using the Front

Panel

(

Tracer TD7

)

Current Limit Setpoint

.

The Tracer™ TU

S

ervice T

oo

l must be used t

o

set the

input si

g

nal type

f

rom the

f

actory de

f

ault o

f

2-10 VDC to

that

of

4-20 mA current. Tracer TU must be als

o

be used

to install or remove the External Demand Limit

S

etpoint

O

p

tion for ﬁ eld installation, or can be used to enable or

disable the feature

(

if installed

)

.

EDL

S

and ECW

S

Analo

g

Input

S

i

g

nal Wirin

g

Details

:

Both the ECW

S

and EDL

S

can be connected and setup

as either a 2-10 VDC (factor

y

default), 4-20 mA, or

resistance input

(

also a form of 4-2OmA

)

as indicated

b

elow.

D

ependin

g

on the type to

b

e used, the

T

racer

TU

S

ervice Tool must be used to conﬁ

g

ure the LLID and the

MP for the proper input type that is bein

g

used. This is

accomplished by a setting change on the Custom Tab o

f

the Conﬁ

g

uration View within Tracer TU.

Important:

For proper unit operation, BOTH the EDLS

:

a

nd ECW

S

settin

g

s MU

S

T be the sam

e

(

2-10 VDC or 4-20mA), even if only on

e

i

nput is to

b

e used.

T

he

J

2-3 and

J

2-6 terminal is chassis grounded and

terminal J2- 1 and J2-4 can be used to source 12 VD

C

.

The ECL

S

uses terminals J2-2 and J2-

3

. ECW

S

uses

terminals

J

2-5 and

J

2-6.

B

oth inputs are only compati

b

le

with high-side current sources.

Figure 2. Wiring examples for EDLS and ECWS

J2-1 & 4 Dual

J2-2 & 5 Analog

J2-3 & 6 I/O LLID

J2-1 & 4 Dual

J2-2 & 5 Analog

J2-3 & 6 I/O LLID

J2-1 & 4 Dual

J2-2 & 5 Analog

J2-3 & 6 I/O LLID

Resister

2-10 VDC, 4-20mA

I = 20/(R + 200)

I

Chilled Water Reset (CWR

)

U

C800 resets the chilled water tem

p

erature set

p

oint

based on either return water tem

p

erature, or outdoor air

tem

p

erature. Return Reset is standard, Outdoor Reset is

optional.

The following shall be selectable:

•

O

ne of three Reset Types: None, Return Water

Temperature Reset,

O

utdoor Air Temperature Reset, or

C

onstant Return Water Temperature Reset.

•

Reset Ratio Set Points

.

For outdoor air tem

p

erature reset there shall be both

p

ositive and ne

g

ative reset ratio’s

.

•

Start Reset Set Points

.

•

Maximum Reset

S

et Points.

The equations

f

or each type o

f

reset are as

f

ollows:

R

eturn

CWS’ = CWS + RATIO

(

START RESET -

(

TWE - TWL

))

a

nd CW

S

’ > or = CW

S

a

nd CW

S

’ - CW

S

< or = Maximum Reset

O

utd

oo

r

CWS’ = CWS + RATIO *

(

START RESET - TOD

)

a

nd CW

S

’ >

o

r = CW

S

a

nd CW

S

’ - CW

S

< or = Maximum Reset

wh

e

r

e

CWS’ is the new chilled water set point or the “reset

CW

S

”

CW

S

is the active chilled water set

p

oint before any reset

h

as occurred, e.g. normally Front Panel, Tracer, or ECW

S

RESET RATI

O

is a user adjustable gain

S

TART RE

S

ET is a user adjustable reference

T

O

D is the outdoor temperature

TWE is enterin

g

evap. water temperature

TWL

is leaving evap. water temperature

MAXIMUM RESET is a user adjustable limit providing

the maximum amount of reset. For all types of reset,

CW

S

’ - CW

S

<

o

r = Maximum Reset.

R

an

ge

I

ncrement

R

e

s

et

Typ

e

R

e

s

et

R

ati

o

S

tart

R

e

s

et

M

ax

R

e

s

et

IP

U

nit

s

SI

U

nit

s

F

actor

y

D

efa

u

lt

R

et

u

rn

10

t

o

120

%

4

t

o

30

F

0

t

o

20

F

1

%

1

%

50

%

(

2.2 to

1

6.7 C

)

(

0.0 to

1

1.1 C

)

Ou

t

doo

r

8

0 to

-

80%

50

t

o

130

F

0

t

o

20

F

1

%

1

%

10

%

(

10 to

54.4 C

)

(

0.0 to

1

1.1 C

)

I

nstallation El

e

ctrical

RLC-

S

VU006A-E4

1

2

I

nstallation El

e

ctrical

In addition to Return and Outdoor Reset, the MP

provides a menu item for the operator to select a

Constant Return Reset. Constant Return Reset will reset

the leaving water temperature set point so as to provide

a constant entering water temperature. The Constant

R

eturn

R

eset equation is the same as the

R

eturn

R

eset

equation except on selection of Constant Return Reset,

the MP will automaticall

y

set Ratio, Start Reset, and

Maximum Reset to the

f

ollowing.

RATIO = 100

%

START RESET = Design Delta Temp

.

MAXIMUM RESET = Desi

g

n Delta Temp.

The equation for Constant Return is then as follows:

CWS’ = CWS + 100% (Design Delta Temp. - (TWE - TWL))

and CW

S

’ >

o

r = CW

S

and CW

S

’ - CW

S

<

o

r = Maximum Reset

When any ty

p

e of CWR is enabled, the MP will ste

p

the Active CWS toward the desired CWS’

(

based on

the above e

q

uations and setu

p

arameters

)

at a rate

of 1 de

g

ree F every 5 minutes until the Active CW

S

equals the desired CW

S

’. This applies when the chiller

is runnin

g

.

When the chiller is not running, CW

S

is reset

immediately

(

within one minute

)

for Return Reset and at

a rate of 1 de

g

ree F every 5 minutes for

O

utdoor Reset.

The chiller will start at the Differential t

o

S

tart value

above a fully reset CW

S

or CW

S

’ for both Return and

Outdoor Reset.

Communications Int

e

rfac

e

LonTalk™ Interface

(

LCI-C

)

UC800 provides an optional LonTalk™ Communication

Interface (LCI-C) between the chiller and a Buildin

g

Automation System

(

BAS

)

. An LCI-C LLID shall be used

to provide “

g

ateway” functionality between a LonTalk

compatible device and the Chiller. The inputs/outputs

include both mandatory and o

p

tional network variables

as established by the LonMark Functional Chiller Pro

ﬁ

le

8

040.

Note:

For more information see ACC-SVN100*-EN.

:

BACnet Protocol

The Building Automation and Control Network (BACnet

a

nd ANSI/ASHRAE Standard 135-2004) protocol is a

standard that allows building automation systems or

com

p

onents from different manufacturers to share

i

n

f

ormation and control

f

unctions. BACnet provides

buildin

g

owners the capability to connect various

t

ypes of building control systems or subsystems

t

ogether

f

or a variety o

f

reasons. In addition, multiple

vendors can use this protocol to share information for

m

onitoring and supervisory control between systems

a

nd devices in a multi-vendor interconnected s

y

stem.

The BACnet protocol identiﬁ es standard objects

(

data

points) called BACnet ob

j

ects. Each ob

j

ect has a deﬁ ned

list of

p

ro

p

erties that

p

rovide information about that

ob

j

ect. BACnet also deﬁ nes a number of standard

app

lication services that are used to access data and

m

anipulate these o

b

jects and provides a client/server

c

o

mmunicati

o

n between devices.

BACnet Testin

g

Laboratory

(

BTL

)

Certiﬁ cation

All Tracer™ UC800 controllers are desi

g

ned to

su

pp

ort BACnet communication

p

rotocol. In

a

ddition,someparticular revisions o

f

the UC800

ﬁ

rmware

h

ave been tested and have achieved BTL certiﬁ cation by

a

n o

fﬁ

cial BACnet testing laboratory. For more details,

r

efer to the BTL website at www.bacnetassociation.or

g

.

Modbus RTU Protocol

Modicon Communication Bus (Modbus) is an application

layer-messa

g

in

g

protocol that, like BACnet, provides

client/server communication

b

etween devices over

a

variety of networks. Durin

g

communications on a

Modbus RTU network, the

p

rotocol determines how

each controller will

k

now its device address, recognize

a

message addressed to its device, determine what

a

ction to take, and extract any data or other information

contained in the message.

C

ontrollers communicate

using a master/slave technique, where

b

y, only one

d

evice

(

master

)

can initiate transactions

(

queries

)

. Other

d

evices (slaves) respond by supplying the requested

d

ata to the master or by ta

k

ing the action requested in

t

he query.

T

he master can address individual slaves or it can

i

nitiate a

b

roadcast message to all slaves.

I

n turn, the

s

l

aves respon

d

to queries t

h

at are a

dd

resse

d

to t

h

em

i

ndividually or broadcasted. The Modbus RTU protocol

establishes the format for the master’s query by placin

g

i

nto it the device address, a

f

unction code de

ﬁ

nin

g

the

r

e

q

uested action, any data to

b

e sent, and an error-

checkin

g

ﬁ

eld

.

RLC-

S

VU006A-E

4

1

3

Overvie

w

R

THD units utilize the following control/interface

com

p

onents:

•

T

racer™ UC800 Controlle

r

•

T

racer TD7

O

perator Interfac

e

UC800

S

peci

ﬁ

cations

This section covers in

f

ormation pertaining to the UC800

c

o

ntr

o

ller hardware.

W

i

r

i

n

g

an

d

Port Descr

i

pt

i

on

s

Figure 3 illustrates the U

C

800 controller ports, LEDs,

rotary switches, and wiring terminals. The numbered list

f

ollowing Figure 3 corresponds to the numbered callouts

in the illustrati

o

n.

Figure 3. Wiring locations and connection ports

F

ront

V

ie

w

Figure 3. Wiring locations and connection ports

B

ottom

V

iew

1

. Rotary Switches for settin

g

BACnet® MAC address or MODBUS ID

.

2

. LINK for BACnet MS/TP, or MODBUS Slave

(

two terminals, ±

)

. Field

wir

e

d if us

e

d

.

3. LINK for BACnet MS/TP, or MODBUS Slave (two terminals, ±). Field

wired if used

.

4. Machine bus for existin

g

machine LLIDs (IPC3 Tracer bus 19.200 baud).

IPC3 Bus: used for Comm4 using TCI or LonTalk® using LCI-C

.

5. Power (210 mA at 24 Vdc) and

g

round terminations (same bus as

i

tem 4). Factor

y

wired

.

6

.

N

ot used

.

7

. Marquee LED power and UC800 Status indicator.

8

.

S

tatus LEDs for the BA

S

link, MBus link, and IMC link

.

9. USB device ty

p

e B connection for the service tool (Tracer TU)

.

1

0. The Ethernet connection can only be used with the Tracer Ada

p

tiView

d

is

pl

ay

.

1

1. USB Host (not used)

.

Communication Interfaces

There are

f

our connections on the UC800 that support

the communication interfaces listed. Refer to Fi

g

ure 3,

p

. 13

f

or the locations o

f

each o

f

these ports.

•

BACnet M

S

/T

P

•

M

O

DBU

S

lave

•

L

onTalk using LCI-C

(

from the IPC3 bus

)

•

Comm 4 using TCI

(

from the IPC3 bus

)

Rotary Switche

s

There are three rotary switches on the

f

ront o

f

the UC800

controller. Use these switches to de

ﬁ

ne a three-digit

a

ddress when the UC800 is installed in a BACnet

o

r

MODBUS system (e.g., 107, 127, etc.)

.

Note:

Valid addresses are 001 to 127 for BACnet and 001

:

t

o 247 for M

O

DBUS.

L

ED Description and

O

peration

There are 10 LEDs on the

f

ront o

f

the UC800. Figure 4

s

hows the locations of each LED and Table 8, p. 14

d

escribes their behavior in speciﬁ c instances

.

Co

ntr

o

ls

RLC-

S

VU006A-E4

1

4

Co

ntr

o

l

s

Figure 4. LED locations

Table 8. LED behavior

LED

U

C800 Statu

s

M

ar

q

uee

LED

Po

wered. If the Marquee LED is

g

reen solid,

the UC800 is

p

owered and no

p

roblems exist.

L

ow

p

ower or malfunction

.

If the Mar

q

uee

L

ED is red solid, the UC800 is

p

owered, but

there are

p

roblems

p

resent.

A

larm. The Mar

q

uee LED blinks Red when an

a

l

a

rm exists.

LINK

,

M

BU

S

, IM

C

Th

e

TX

LED blinks

g

reen at the data transfer

rate when the UC800 transfers data to other

d

evices

o

n the link.

Th

e

Rx

LED blinks

y

ellow at the data transfer

rate when the UC800 receives data from

o

ther

d

evices

o

n the link.

E

th

e

rn

e

t

L

ink

Th

e

LINK

LED is solid

g

reen if the Ethernet

link is connected and communicatin

g

.

Th

e

A

CT LED blinks

y

ellow at the data

tr

a

nsfer r

a

te when

da

t

a

ﬂ

o

w is

a

ctive

o

n the

link.

S

ervice

The Service LED is solid

g

reen when pressed.

F

or

q

ualiﬁ ed service technicians onl

y

. Do not

u

s

e

.

NOTICE

:

El

ectrica

l

N

oise

!

Maintain at least 6 inches between low-volta

g

e (<30V)

and high voltage circuits. Failure to do so could result in

e

l

ectrica

l

noise that cou

l

d distort the signa

l

s carried by

the low-volta

g

e wirin

g

, includin

g

IPC.

Tracer TD7 Operator Interfac

e

I

nformation is tailored to o

p

erators, service technicians,

a

nd owners

.

W

hen operatin

g

a chiller, there is speciﬁ c information

you need on a day-to-day basis—setpoints, limits,

d

iagnostic information, and reports.

D

ay-to-day operational information is presented at the

d

isplay. Logically organized groups of information—

chiller modes o

f

operation, active diagnostics, settings

a

nd reports put in

f

ormation conveniently at your

ﬁ

ngertips

.

Tr a c

e

r™ T

U

The RTHD o

p

erator interface allows for daily o

p

erational

t

as

k

s and setpoint chan

g

es. However, to adequately

service chillers

T

racer

™

TU

service tool is re

q

uired.

(Non-Trane

p

ersonnel, contact your local Trane ofﬁ ce

for software

p

urchase information.) Tracer TU adds a

level of so

p

histication that im

p

roves service technician

effectiveness and minimizes chiller d

o

wntime. This

p

ortable PC-based service-tool software su

pp

orts service

a

nd maintenance tasks, and is required

f

or so

f

tware

up

g

rades, conﬁ

g

uration chan

g

es and major service

ta

s

k

s

.

Tracer TU serves as a common interface to all Trane

®

chillers, and will customize itself based on the properties

of the chiller with which it is communicating. Thus, the

service technician learns only one service interface.

T

he panel

b

us is easy to trou

b

leshoot usin

g

LED

sensor

veriﬁ cation.

O

nly the defective device is replaced. Tracer

TU

can communicate with individual devices or

g

roups

o

f devices.

All chiller status, machine con

ﬁ

guration settings,

customiza

b

le limits, and up to 100 active or historic

d

iagnostics are displayed through the service-tool

s

of

tware inter

f

ace.

LED

s and their respective

T

racer

TU

indicators visually

con

ﬁ

rm the availability o

f

each connected sensor, relay,

a

nd actuat

o

r.

T

racer

TU

is designed to run on a customer

’

s laptop,

connected to the Tracer control

p

anel with a USB cable.

Your laptop must meet the

f

ollowin

g

hardware and

so

f

tware requirements:

•

1 GB RAM

(

minimum

)

•

1024 x 768 screen res

ol

uti

on

•

CD-R

O

M driv

e

•

Ethernet 10

/

100 LAN c

a

rd

•

An available U

S

B 2.0

p

ort

•

Microsoft® Windows® XP Professional operation

system with Service Pack 3 (SP3) or Windows 7

Enterprise or Professional operatin

g

system (32-bit or

64-bit)

•

Microso

f

t .NET Framework 4.0 or later

RLC-

S

VU006A-E

4

15

Note

:

Tracer TU is designed and validated for this

:

m

inimum laptop conﬁ guration. Any variatio

n

f

rom this conﬁ guration may have different results.

T

herefore, su

pp

ort for Tracer TU is limited to onl

y

t

hose laptops with the conﬁ guration previousl

y

s

peci

ﬁ

ed.

N

ote

:

For more information, see TTU-SVN01A-EN

:

T

racer TU Gettin

g

Started Guid

e

Figure 5. Tracer TU

Co

ntr

o

ls

RLC-

S

VU006A-E4

1

6

D

i

a

g

nost

i

c

s

Dia

g

nostic Name and Source: Name of Diagnostic and

its source. Note that this is the exact text used in the

User Interface and/or Service Tool displays.

A

ff

ects Tar

g

et

:

Deﬁ nes the “target” or what is affected

by the diagnostic. Usually either the entire Chiller,

or a particular Circuit or Compressor is affected by

the diagnostic (the same one as the source), but in

special cases functions are modiﬁ ed or disabled by the

diagnostic. None implies that there is no direct a

ff

ect to

the chiller, sub components or functional operation.

Design Note:

T

racer

™

TU

does not support the display

o

f

certain targets on its Diagnostics pages although

the

f

unctionality implied by this table is supported.

Targets such as Evap Pump, Ice Mode, Chilled Water

Reset, External Set

p

oints etc. – are dis

p

layed as sim

p

ly

“

C

hiller” even though they do not imply a chiller

shutdown – only a com

p

romise of the s

p

eciﬁ c feature

.

Severit

y:

De

ﬁ

nes the severit

y

o

f

the above e

ff

ect.

Immediate means immediate shutd

o

wn

o

f the affected

p

ortion, Normal means normal or

f

riendly shutdown

of the affected

p

ortion, S

p

ecial Action means a s

p

ecial

action or mode of operation

(

limp alon

g)

is invoked, but

without shutdown

,

and In

f

o means an In

f

ormational

Note or Warnin

g

is

g

enerated. Desi

g

n Note: Tracer TU

does not support display of “

S

pecial Action”, on its

Dia

g

nostics pa

g

es, so that if a dia

g

nostic has a special

action de

ﬁ

ned in the table below, it will be displayed

only as “In

f

ormational Warning” as long as no circuit

o

r chiller shutd

o

wn results. If there is a shutd

o

wn and

special action de

ﬁ

ned in the table, then the Tracer TU

Dia

g

nostics Pa

g

e display will indicate the shutdown

type on

l

y

.

Persistence

:

Deﬁ nes whether or not the diagnostic and

i

ts effects are to be manually reset (Latched), or can be

either manually or automatically reset when and if the

condition returns to normal (Nonlatched).

Active Modes [Inactive Modes]

:

States the modes or

periods of operation that the diagnostic is active in

a

n

d

, as necessary, t

h

ose mo

d

es or perio

d

s t

h

at it is

speciﬁ cally “not active” in as an exception to the active

m

odes. The inactive modes are enclosed in brackets, [ ].

N

ote that the modes used in this column are internal and

not generally annunciated to any o

f

the

f

ormal mode

d

is

p

lays.

C

riteria

:

Q

uantitatively deﬁ nes the criteria used in

generating the diagnostic and, if nonlatching, the criteria

for auto reset. If more ex

p

lanation is necessary a hot link

t

o the Functional Speciﬁ cation is used

.

R

eset Level: De

ﬁ

nes the l

o

west level

of

manual

d

iagnostic reset comman

d

w

h

ic

h

can c

l

ear t

h

e

d

ia

g

nostic. The manual dia

g

nostic reset levels in order of

priority are:

L

ocal or

R

emote.

F

or example, a dia

g

nostic

t

hat has a reset level of Remote, can be reset b

y

either

a

remote dia

g

nostic reset command or

b

y a local

d

ia

g

nostic reset comman

d

.

H

e

l

p

T

ext: Provides

f

or a brie

f

descri

p

tion o

f

what kind

of problems mi

g

ht cause this dia

g

nostic to occur. Both

control system component related pro

b

lems as well as

chiller a

pp

lication related

p

roblems are addressed (as

can possibly be anticipated

)

. These help messa

g

es will

be u

p

dated with accumulated ﬁ eld ex

p

erience with the

c

h

i

ll

ers

.

RLC-

S

VU006A-E

4

1

7

Starter Diagnostic

s

H

ex

C

o

d

e

D

ia

g

nostic Name

a

nd S

o

urc

e

E

ffect

s

T

ar

g

et

Severit

y

P

er

s

i

s

tenc

e

A

ctive M

o

des

[

Inactive Modes

]

Criteri

a

R

e

s

et

L

evel

E5

P

h

a

se Revers

a

l

C

hiller

I

mme

d

i

a

te

La

tch

C

om

p

ressor

e

ner

g

ized

t

o

tr

a

nsiti

o

n

c

ommand

[

All

Other Times

]

A

p

hase reversal was detected on the

incomin

g

current.

O

n a compressor startup

the phase reversal lo

g

ic must detect and

tri

p

in a maximum of 0.3 second from

c

om

p

ressor s

t

ar

t

.

Lo

c

al

1

8

S

tarter Dr

y

Run Tes

t

C

hiller

I

mme

d

i

a

te

La

tch

S

tarter Dr

y

Run

Mod

e

W

hile in the Starter Dr

y

Run Mode either

50% Line Volta

g

e was sensed at the Potential

Tr

a

nsf

o

rmers

o

r 1

0

% RLA C

u

rrent w

a

s

ense

d

a

t the C

u

rrent Tr

a

nsf

o

rmers.

Lo

c

al

E4

P

h

a

se L

o

ss

C

hiller

I

mme

d

i

a

te

La

tch

S

tart

S

e

q

uence

a

n

d

R

u

n m

od

e

s

a)

No current was sensed on one or two

o

f the current transformer in

p

uts while

runnin

g

or startin

g

(See Nonlatchin

g

Power

L

oss Dia

g

nostic for all three phases lost

w

hile runnin

g

). Must hold = 20% RLA.

M

ust tri

p

= 5% RLA. Time to tri

p

shall be

lon

g

er than

g

uaranteed reset on Starter

M

odule at a minimum, 3 seconds maximum.

A

ctual desi

g

n trippoint is 10%. The actual

desi

g

n trip time is 2.64 seconds. b) If Phase

reversal

p

rotection is enabled and current

is n

o

t sense

d

o

n

o

ne

o

r m

o

re c

u

rrent

x

former inputs. Lo

g

ic will detect and trip in

a

maximum of 0.3 second from com

p

ressor

sta

r

t

.

Lo

c

al

E2

M

omentar

y

P

ower

Lo

ss

C

hiller

I

mme

d

i

a

te

No

nl

a

tch

A

ll com

p

ressor

runnin

g

and

s

toppin

g

modes

[

all com

p

ressor

s

tartin

g

and non-

runnin

g

modes]

M

omentar

y

Power Loss o

p

tion disabled: No

e

ff

ec

t.

M

omentar

y

Power Loss o

p

tion enabled: A

loss of

p

ower on three line c

y

cles or more

w

as detected. Dia

g

nostic is reset in 30

s

ec

o

n

d

s.

S

ee Momentar

y

Power Loss Protection

sp

eciﬁ cation for additional information.

R

em

o

te

1

A

0

Po

wer

Lo

ss

C

hiller

I

mme

d

i

a

te

No

nL

a

tch

A

ll com

p

ressor

runnin

g

modes

[

all com

p

ressor

s

tartin

g

and non-

runnin

g

modes]

The com

p

ressor had

p

reviousl

y

established

c

urrents while runnin

g

and then all three

phases of current were lost. Desi

g

n: Less

than 10% RLA, tri

p

in 2.64 seconds. This

dia

g

nostic will preclude the Phase Loss

D

ia

g

nostic and the Transition Complete Input

Opened Dia

g

nostic from bein

g

called out.

To prevent this dia

g

nostic from occurrin

g

w

ith the inten

d

e

d

isc

o

nnect

o

f m

a

in

p

ower, the minimum time to tri

p

must be

g

reater than the

g

uaranteed reset time o

f

the Starter module. Note: This dia

g

nostic

prevents nuisance latchin

g

dia

g

nostics due

to a momentar

y

p

ower loss – It does not

p

rotect motor/com

p

ressor from uncontrolled

p

ower rea

pp

lication. See Momentar

y

Power

L

oss Dia

g

nostic for this protection. This

dia

g

nostic will auto reset in 10 seconds from

its occurrence, and is not active durin

g

the

s

tart mode before the transition com

p

lete

in

p

ut is

p

roven. This

p

revents the chiller from

c

yclin

g

due to some internal starter problem,

a

s the st

a

rter w

ou

l

d

l

a

tch

ou

t

o

n either

a

“

Starter Fault T

yp

e 3” or a “Starter Did Not

Transition” latchin

g

dia

g

nostic. However true

power loss occurrin

g

durin

g

a start would

result in a misdia

g

nosis and the chiller would

not automaticall

y

recover.

R

em

o

te

E3

S

evere

Cu

rrent

Im

ba

l

a

nce

C

hiller

No

rm

al

La

tch

A

ll Runnin

g

Modes

A

30

% c

u

rrent im

ba

l

a

nce h

a

s

b

een

d

etecte

d

o

n one phase relative to the avera

g

e of all

3

p

hases for 90 continuous seconds.

Lo

c

al

D

i

a

g

nost

i

cs

RLC-

S

VU006A-E4

1

8

D

i

a

g

nost

i

c

s

H

ex

C

o

d

e

D

ia

g

nostic Name

a

nd S

o

urc

e

E

ffect

s

T

ar

g

et

Severit

y

P

er

s

i

s

tence

A

ctive M

o

des

[

Inactive Modes

]

Criteri

a

R

e

s

et

L

evel

1

E9 Starter Fault T

yp

e

I

C

hiller

I

mmediate

L

atch

Startin

g

- Y Delta

Starters Onl

y

This is a s

p

eciﬁ c starter test where 1M

(

1K1

)

is cl

o

se

d

ﬁ rst

a

n

d

a

check is m

ad

e t

o

ens

u

re

that there are no currents detected b

y

the

CT's. If currents are detected when onl

y

1M

is closed ﬁ rst at start, then one of the other

c

ontactors is shorted.

L

oca

l

1

ED Starter Fault T

yp

e I

I

C

hiller

I

mme

d

i

a

te

La

tch

Startin

g

All types

o

f st

a

rter

s

a

. This is a s

p

eciﬁ c starter test where the

Shortin

g

Contactor (1K3) is individually

e

ner

g

ized and a check is made to ensure that

there are no currents detected b

y

the CT's. I

f

c

urrent is detected when only S is ener

g

ized

a

t Start, then 1M is shorted. b. This test in a.

a

bove a

pp

lies to all forms of starters

(

Note:

I

t is understood that man

y

starters do not

c

onnect to the Shortin

g

Contactor.).

Lo

c

al

1

F

1

Starter Fault T

yp

e III

C

hiller

I

mme

d

i

a

te

La

tch

S

tartin

g

[

Ada

p

tive

F

re

q

uenc

y

S

tarter

T

yp

e]

A

s

p

art of the normal start se

q

uence to

a

pply power to the compressor, the Shortin

g

Contactor

(

1K3

)

and then the Main Contactor

(1K1) were ener

g

ized. 1.6 seconds later

there were no currents detected b

y

the

CT's f

o

r the l

a

st 1.2 sec

o

n

d

s

o

n

a

ll three

p

hases. The test above a

pp

lies to all forms

o

f st

a

rters.

Lo

c

al

1

89

S

o

li

d

St

a

te St

a

rter

Fau

lt

C

hiller

I

mme

d

i

a

te

La

tch

A

ll The Solid State Starter Fault Rela

y

is o

p

en

Lo

c

al

7

01

A

FD Drive F

au

l

t

C

hiller

I

mme

d

i

a

te

La

tch

A

ll The AFD Drive Fault Rela

y

is o

p

en

Lo

c

al

F0

St

a

rter Di

d

N

o

t

T

r

a

nsiti

o

n

C

hiller

I

mme

d

i

a

te

La

tch

O

n the ﬁ rst check

a

fter tr

a

nsiti

o

n.

The St

a

rter M

odu

le

d

i

d

n

o

t receive

a

transition complete si

g

nal in the desi

g

nated

time fr

o

m its c

o

mm

a

n

d

t

o

tr

a

nsiti

o

n. The

m

u

st h

o

l

d

time fr

o

m the St

a

rter M

odu

le

tr

a

nsiti

o

n c

o

mm

a

n

d

is 1 sec

o

n

d

. The M

u

st

tri

p

time from the transition command is

6

seconds. Actual desi

g

n is 2.5 seconds. This

dia

g

nostic is active only for Y-Delta, Auto-

Transformer, Primar

y

Reactor, and X-Line

S

t

a

rters.

Lo

c

al

1

F

5

Com

p

ressor Did Not

A

ccelerate Full

y

C

hiller

I

mme

d

i

a

te

La

tch St

a

rt M

od

e

The starter module did not receive an “U

p

to Speed” or “End of Ramp” si

g

nal from the

SSS within 2.5 seconds after commandin

g

a

b

yp

ass, or after the maximum acceleration

time had expired, whichever is lon

g

er. This

dia

g

nostic only applies to SSS/AFD.

Lo

c

al

1

FA

Com

p

ressor Did Not

A

ccel: Tr

a

nsiti

o

n

C

hiller

I

nf

o

La

tch St

a

rt M

od

e

The com

p

ressor did not come u

p

to s

p

eed

(

g

et to <85%RLA) in the allotted time

deﬁ ned b

y

the Maximum Acceleration Timer

a

nd a transition was forced

(

motor

p

ut across

the line

)

at that time. This a

pp

lies to all

s

tarter t

yp

es. Note: Since RTHD SSS has no

forced transition capability, this info warnin

g

c

an be followed with a “Com

p

ressor did not

a

ccelerate fully” dia

g

nostic above and an

abo

rte

d

st

a

rt.

R

em

o

te

EE

Com

p

ressor Did Not

A

cceler

a

te: Sh

u

t

do

wn

C

hiller

I

mme

d

i

a

te

La

tch St

a

rt M

od

e

The com

p

ressor did not come u

p

to s

p

eed

(

g

et to <85%RLA) in the allotted time

deﬁ ned b

y

the Maximum Acceleration Timer

a

nd and the start was aborted

p

er the starter

c

onﬁ

g

uration selected.

R

em

o

te

3

D

5

Transition Com

p

lete

I

n

p

ut Shorted

C

hiller

I

mme

d

i

a

te

La

tch

P

re-

S

t

a

r

t

The Transition Com

p

lete in

p

ut is shorted

before the com

p

ressor was started. This is

a

ctive f

o

r

a

ll electr

o

mech

a

nic

a

l st

a

rters.

Lo

c

al

3

D

6

A

t S

p

eed In

p

ut

Sh

o

rte

d

C

hiller

I

mme

d

i

a

te

La

tch

P

re-

S

t

a

r

t

The “At S

p

eed” in

p

ut is shorted before the

c

om

p

ressor was started. This is active for

so

li

d

st

a

te st

a

rters

a

n

d

AFD.

Lo

c

al

RLC-

S

VU006A-E

4

19

H

ex

C

o

d

e

D

ia

g

nostic Name

a

nd S

o

urc

e

E

ffect

s

T

ar

g

et

Severit

y

P

er

s

i

s

tenc

e

A

ctive M

o

des

[

Inactive Modes

]

Criteri

a

R

e

s

et

L

evel

3

D7

Transition Com

p

lete

I

n

p

ut O

p

ened

C

hiller

I

mme

d

i

a

te

La

tch

A

ll Runnin

g

Modes

a

fter tr

a

nsiti

o

n

c

om

p

leted

The Transition Com

p

lete in

p

ut is o

p

en

w

ith the compressor motor runnin

g

after a

s

uccessful com

p

letion of transition. This is

a

ctive onl

y

for all electromechanical starter

s

Lo

c

al

3

D

8

A

t S

p

eed In

p

ut

O

p

ened

C

hiller

I

mme

d

i

a

te

La

tch

A

ll Runnin

g

Modes

a

fter At S

p

eed

p

r

o

v

en

The “At S

p

eed” in

p

ut was found to be

o

pened with the compressor motor runnin

g

a

fter successfully obtainin

g

an at speed and

b

yp

assed condition. This is active for solid

s

t

a

te st

a

rters

a

n

d

AFD

Lo

c

al

EC

Mo

t

o

r

Cu

rrent

O

verl

oad

C

hiller

I

mme

d

i

a

te

La

tch Chiller Ener

g

ized

Com

p

ressor current exceeded overload time

v

s. tri

p

characteristic. For A/C

p

roducts Must

tri

p

= 140% RLA, Must hold=125%, nominal

tri

p

132.5% in 30 seconds

Lo

c

al

C

A

S

t

a

rter

Co

nt

a

ct

o

r

I

nterru

p

t Failure

C

hiller

I

mme

d

i

a

te

a

nd S

p

ecial

A

cti

o

n

La

tch

S

t

a

rter

Co

nt

a

ct

o

r

not Ener

g

ized

[

Starter Contactor

E

ner

g

ized]

D

etected compressor currents

g

reater than

1

0% RLA on an

y

or all

p

hases when the

c

om

p

ressor was commanded off. Detection

time sh

a

ll

b

e

5

sec

o

n

d

s minim

u

m

a

n

d

10

sec

o

n

d

s m

a

xim

u

m.

O

n

d

etecti

o

n

a

n

d

u

ntil

the controller is manually reset:

g

enerate

dia

g

nostic, ener

g

ize the appropriate alarm

relay, continue to ener

g

ize the Evap and

Cond Pum

p

Out

p

uts, continue to command

the affected com

p

ressor off, full

y

unload the

e

ffected compressor. For as lon

g

as current

c

ontinues,

p

erform li

q

uid level and oil return

g

as pump contro

l

Lo

c

al

D7

Over Volta

g

e

C

hiller

No

rm

al

No

nL

a

tch

A

l

a

. Avera

g

e of all monitored Line volta

g

es

a

bove + 10% of nominal.

[

Must hold =

+

10% of nominal. Must tri

p

= + 15% o

f

n

o

min

a

l. Reset

d

ifferenti

a

l = min.

o

f 2%

a

nd max. of 4%. Time to tri

p

= minimum

o

f 1 min. and maximum of 5 min.

)

D

esi

g

n: Nom. trip: 60 seconds at

g

reater

than 112.5%, + or - 2.5%, Auto Reset at

10

9%

o

r less.

R

em

o

te

D8

U

nder Volta

g

e

C

hiller

No

rm

al

No

nL

a

tch

A

l

a

. Avera

g

e of all monitored Line volta

g

es

below - 10% of nominal or the Under

/

Overvolta

g

e transformer(s) are not

c

onnected.

[

Must hold = - 10% of nominal.

M

ust tri

p

= - 15% of nominal. Reset

d

ifferenti

a

l = min.

o

f 2%

a

n

d

m

a

x.

o

f 4%.

Time to tri

p

= min. of 1 min. and max. o

f

5 min.) Desi

g

n: Nom. trip: 60 seconds at

less than 87.5%, + or - 2.8% at 200V or

+

or - 1.8% at 575V, Auto Reset at 90%

o

r

g

rea

t

er.

R

em

o

te

D

i

a

g

nost

i

cs

RLC-

S

VU006A-E4

20

D

i

a

g

nost

i

c

s

Main Processor Diagnostic

s

H

ex

C

o

d

e

D

ia

g

nostic Nam

e

E

ffect

s

T

ar

g

et

Severit

y

P

er

s

i

s

tence

A

ctive M

o

des

[

Inactive Modes

]

Criteri

a

R

e

s

et

L

evel

D

9

MP

:

R

eset

Ha

s

O

cc

u

rre

d

C

hiller

I

nf

o

No

nL

a

tch

A

l

The main

p

rocessor has successfull

y

come

o

ut of a reset and built its a

pp

lication.

A

reset ma

y

have been due to a

p

ower u

p

,

installin

g

new software or conﬁ

g

uration. This

dia

g

nostic is immediately and automatically

c

leared and thus can onl

y

be seen in the

H

istoric Dia

g

nostic List in TechView

R

em

o

te

6

B

5

Unex

p

ected Starter

Sh

u

t

do

wn

C

hiller

No

rm

al

No

nl

a

tch

A

ll Cprsr Runnin

g

modes, Startin

g

,

R

unnin

g

and

P

reparin

g

to

Sh

u

t

do

wn

The Starter module status re

p

orted back that

it is stopped when it should be runnin

g

and

no Starter dia

g

nostic exists. This dia

g

nostic

w

ill be lo

gg

ed in the active buffer and then

c

le

a

re

d

.

NA

FB

L

ow Eva

p

orator

R

efri

g

erant

T

em

p

erature

C

hiller

I

mme

d

i

a

te

La

tch

A

ll Ckt Runnin

g

Mod

es

a

. The inferred Saturated Evap Refri

g

erant

Tem

p

erature

(

calculated from suction

p

ressure transducer

(

s

))

dro

pp

ed below the

L

ow Refri

g

erant Temperature Cutout Setpoint

for 450°F-sec

(

10°F-sec max rate

)

while the

c

ircuit was runnin

g

after the i

g

nore period

had expired. The inte

g

ral is held at zero for

the 1 minute i

g

nore time followin

g

the circuit

s

tartup and the inte

g

ral will be limited to

never tri

p

in less than 45 seconds, i.e. the

e

rror term shall be clam

p

ed to 10°F. The

minimum LRTC set

p

oint is -5°F

(

18.7 Psia

)

the

p

oint at which oil se

p

arates from the

refri

g

erant. b. Durin

g

the timeout of the

trip inte

g

ral, the unload solenoid(s) of the

runnin

g

compressors on the circuit, shall be

e

ner

g

ized continuously and the load solenoid

s

hall be off. Normal load/unload o

p

eration

w

ill be resumed if the trip inte

g

ral is reset by

return to tem

p

s above the cutout set

p

oint.

R

em

o

te

1

9

8

Lo

w

O

il Fl

o

w

C

hiller

I

mme

d

i

a

te

La

tch

Chiller Ener

g

ized

a

n

d

Delt

a

P

abo

ve

15

Psi

d

The oil

p

ressure was out of the acce

p

table

pressure ran

g

e for 15 seconds, while the

D

elta Pressure was

g

reater than 15 Psid.:

A

cceptable ran

g

e is 0.50 or 0.60 > (PC-Po) /

(

PC-PE

)

for the ﬁ rst 2.5 minutes of o

p

eration,

a

nd 0.40 or 0.50 >

(

PC-Po

)

/

(

PC-PE

)

thereafter. The hi

g

her ratios used if the

sy

stem DP is less than 23

p

sid

Lo

c

al

5

9

C

Lo

ss

o

f

O

il

a

t

C

om

p

ressor

(Runnin

g

)

C

hiller

I

mme

d

i

a

te

La

tch

S

t

a

rter

Co

nt

a

ct

o

r

E

ner

g

ized

I

n runnin

g

modes , Oil Loss Level Sensor

detects lack of oil in the oil tank feedin

g

the

c

ompressor (distin

g

uishin

g

a liquid ﬂ ow from

a

va

p

or ﬂ ow

)

Lo

c

al

5

9D

Lo

ss

o

f

O

il

a

t

C

om

p

ressor

(

Sto

pp

ed

)

C

hiller

I

mme

d

i

a

te

a

nd S

p

ecial

A

cti

o

n

La

tch

C

om

p

ressor Pre-

s

tart

[

all other

modes

]

O

il L

o

ss Level Sens

o

r

d

etects

a

l

a

ck

o

f

o

il in

the oil tank feedin

g

the compressor for 90

s

econds after EXV

p

re

p

osition is com

p

leted.

N

ote: Com

p

ressor start is dela

y

ed while

w

aitin

g

for oil to be detected.

Lo

c

al

1

A

E

Lo

w Differenti

a

l

R

efri

g

erant Pressure

C

hiller

I

mme

d

i

a

te

La

tch Chiller Ener

g

ized

The s

y

stem differential

p

ressure was either

below 15 Psid for more than 164 Psid-sec,

o

r

b

el

o

w 2

3

.

0

Psi

d

f

o

r

3000

Psi

d

-sec. The

latter inte

g

ral’s value is not cleared for any

reason includin

g

dia

g

nostic trip, manual

reset, or power up reset (ie. Inte

g

ral is saved

nonvolatily on power down). The inte

g

ral will

decay while circuit is runnin

g

at a max rate

o

f –10 PSID, and while sto

pp

ed at a rate o

f

–

0.4 PSID. This same inte

g

ral is associated

w

ith the operatin

g

mode “Compressor Cool

D

own”. Also see dia

g

nostic below

R

em

o

te

2

97

No

Differenti

a

l

R

efri

g

erant Pressure

C

hiller

I

mme

d

i

a

te

La

tch Chiller Ener

g

ized

The s

y

stem differential

p

ressure was below

7.7 Psid. The occurrence of this dia

g

nostic

w

ill saturate the above “Low Diff Rf

g

t Press

”

I

nte

g

ral and invoke the same “Compressor

Cool Down” o

p

mode.

R

em

o

te

Trane Tracer TD7 User manual

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