Procon MelcoRETAIL MINI Installation guide

Brand
Procon
Model
MelcoRETAIL MINI
Category
Split-system air conditioners
Type
Installation guide
Procon
MelcoRETAIL MINI
FOR INSTALLERS
INSTALLATION MANUAL
Manual version 1.0.6
Firmware version 1.0.3
For safe and correct use, please read this installation manual thoroughly before installing the PROCON
MelcoRETAIL MINI.
Safe
t
Ca
u
Do no
Op
e
The p
r
Shi
e
Use o
reduc
e
ensur
e
CE
This
p
2014/
3
UL 61
Eur
o
Class
produ
c
and r
e
This i
s
interf
e
A
“De
c
been
m
If this
deter
m
interf
e
If nec
e
exper
i
t
y warnin
g
u
tion:
t expose to
r
e
rating Te
m
r
oduct has
b
e
lded Signal
nly shielded
e
the possib
i
e
s that you
m
Notice:
p
roduct has
b
3
5/EU (Low
V
010-1 Elect
o
pean Union
A products
a
c
ts may als
o
e
quire the u
s
s
a Class A
p
e
rence in wh
i
c
laration of
C
m
ade and is
equipment
d
m
ined by tur
n
e
rence by on
Reorient t
h
Relocate
t
Move the
e
ssary, con
s
i
enced radio
/
g
s
r
ain or moist
m
perature:
b
een design
e
Cables:
cables for c
o
i
lity of interf
e
m
aintain the
een determ
i
V
oltage Dir
e
rically Safet
y
, Class
A
:
a
re intended
o
be utilized i
s
er to take a
d
p
roduct. In a
i
ch case the
C
onformity” i
available o
n
d
oes cause i
n
n
ing the equ
i
e or more o
f
h
e receiving
t
he Procon
M
Procon Mel
c
s
ult a Procon
/
television o
r
u
re.
e
d to operat
e
o
nnecting p
e
e
rence with r
a
appropriate
i
ned to be in
e
ctive) and 2
0
y
Tested.
for use in n
o
n residential
/
d
equate corr
e
domestic e
n
user may b
e
n accordan
c
n
request.
n
terference
w
i
pment off a
n
f
the followin
g
antenna.
M
elcoRETAI
L
c
oRETAIL M
MelcoRET
A
r
EMC techn
• i •
Preface
e
between -2
0
e
ripherals to
a
dio commu
EMC classif
i
compliance
0
11/65/EU (
R
o
n-residenti
a
/domestic e
n
e
ctive meas
u
n
vironment t
h
e
required to
c
e with the p
r
w
ith radio c
o
n
d on, you a
r
g
measures:
L
MINI with
r
INI away fro
m
A
IL MINI tec
h
ician for ad
d
0
° C and +6
0
any Procon
nications se
r
i
cation for th
e
with 2014/3
0
R
oHS Direc
t
a
l/non-dome
s
n
vironments
u
res.
h
is product
m
take adequ
a
r
eceding dir
e
mmunicatio
n
r
e encourag
e
r
espect to th
e
m
the receiv
h
nical suppo
d
itional sugg
e
0
° C
MelcoRETA
r
vices. Usin
g
e
intended e
0
/EU (EMC
D
ive).
s
tic environ
m
but may ca
u
m
ay cause r
a
a
te measure
s
e
ctives and
s
n
s services,
w
e
d to try to c
o
e
receiver.
e
r.
r
t represent
a
e
stions.
A
IL MINI devi
g
shielded c
a
e
nvironment.
D
irective),
m
ents. Class
u
se interfere
n
a
dio frequen
c
s.
s
tandards h
a
w
hich can b
e
orrect the
a
tive or an
ce to
a
bles
A
n
ce
c
y
s
e
Disc
l
Wa
r
A
ll pr
o
mater
i
Wa
r
Mitsu
b
We re
by us
use,
n
If the
e
the e
q
l
aimer
r
ranty:
o
ducts manu
f
i
als for a pe
r
r
ning:
b
ishi Electric
serve the ri
g
is believed t
o
n
or for any in
f
e
quipment i
s
q
uipment ma
y
f
actured on
b
r
iod of three
y
UK assum
e
g
ht to chang
e
o
be accura
t
f
ringements
s
used in a
m
y
be impair
e
b
ehalf of Mit
s
ears from t
h
s no liability
e
this manu
a
t
e and reliab
l
of patents o
r
m
anor not sp
e
d.
• ii •
subishi Elec
t
h
e date of d
e
for damage
s
a
l at any tim
e
l
e. However
,
r other right
s
e
cified by th
e
t
ric UK are
w
e
livery to th
e
s
conseque
n
e
without noti
,
no respons
s
of third par
t
e
manufactu
w
arranted ag
a
original pur
c
t to the user
ce. The info
r
i
bility is ass
u
t
ies resultin
g
r
er, the prot
e
ainst defecti
c
haser.
r
of this prod
u
r
mation furn
i
u
med by us
f
g
from its us
e
e
ction provid
v
e
u
ct.
i
shed
f
or its
e
.
ed by
• iii •
Document Amendment Register
Document
Version
Latest
Firmware
Version
Date Author Notes
1.0.0
1.0.0 12/07/17 GD Initial version.
1.0.1 1.0.0 31/07/17 GD
Added information to Connections section regarding connections
to twin/triple/quad and MXZ systems.
Correction made to section 2, the name MAC-399IF replaced
with MAC-333IF.
1.0.2 1.0.1 11/08/17 GD
Voltage/resistance bands changed for setpoint, mode and fan
speed control.
1.0.3 1.0.1 29/09/17 GD
Added certification logos
1.0.4 1.0.2 27/11/17 GD
Updates for V1.0.2 firmware.
Sections 7.9, 7.10 and 7.11 updated.
Addition of new Modbus holding registers (see section 12.1).
Firmware revision history table added.
1.0.5 1.0.3 17/01/18 GD
Added section 8. Failsafe AUTO Mode.
Updated sections 7.2 Mode control and 7.3 Fan Speed control.
Firmware revision history table updated.
1.0.6 1.0.3 08/02/18 GD
Corrected text in section 9.Deadband mode to state deadband
mode is enabled by setting DIP switch 2-1 to the ON position.
Any additional notes since printing will be appended to the rear of this document on separate
sheets of paper.
• iv •
Firmware Revision History
Firmware
Version Date Notes
1.0.0
21/07/17 Release for testing purposes.
1.0.1 25/08/17 Voltage/resistance bands changed for setpoint, mode and fan speed control.
1.0.2 28/11/17
Operation of HEATING relay changed so it only energises when in Heat or Auto mode
when the return air temperature is less than the setpoint.
Operation of COOLING relay changed so it only energises when in Cool or Auto mode
when the return air temperature is greater than the setpoint.
A configurable relay switching delay has been added to prevent rapid switching.
1.0.3 17/01/18 Added Failsafe AUTO mode feature (see section 8. Failsafe AUTO Mode)
1
[
[
Fig. 1]
A
A
A CN105/
C
C
N92 connect
i
ion lead
Page 1
2
[Fig. 2
]
]
Air to
a
a
ir unit
Page 2
Page 3
Contents
Preface ............................................................................................................................................................................. i
Safety warnings ............................................................................................................................................................ i
Disclaimer ..................................................................................................................................................................... ii
Document Amendment Register .................................................................................................................................. iii
Firmware Revision History ........................................................................................................................................... iv
1.Safety precautions ................................................................................................................................................ 5
2.Overview ................................................................................................................................................................ 6
3.Installation ............................................................................................................................................................. 7
3.1.Physical connection ........................................................................................................................................ 7
3.2.Power supply .................................................................................................................................................. 7
3.3.RS-485 connection ......................................................................................................................................... 7
4.DIP switch settings ............................................................................................................................................... 8
4.1.Modbus Slave ID ............................................................................................................................................ 8
4.2.RS-485 communication settings ..................................................................................................................... 9
4.3.Protocol selection ........................................................................................................................................... 9
4.4.Auto Mode / Lock Mode selection .................................................................................................................. 9
4.5.Deadband Mode ............................................................................................................................................. 9
4.6.Setpoint Limiting ........................................................................................................................................... 10
4.7.Timeout ........................................................................................................................................................ 10
4.8.Input type selection ...................................................................................................................................... 10
4.9.Summary ...................................................................................................................................................... 11
5.Connections ........................................................................................................................................................ 12
5.1.Overview ...................................................................................................................................................... 12
5.2.CN92/CN105 ................................................................................................................................................ 12
5.3.RS-485 ......................................................................................................................................................... 12
5.3.1.RS-485 termination resistor ................................................................................................................... 12
5.4.Analogue Inputs ........................................................................................................................................... 13
5.4.1.Input type selection ............................................................................................................................... 13
5.4.2.S.P. ....................................................................................................................................................... 13
5.4.3.MODE ................................................................................................................................................... 13
5.4.4.FAN SPEED .......................................................................................................................................... 13
5.4.5.OCC MODE .......................................................................................................................................... 13
5.5.Digital Inputs................................................................................................................................................. 14
5.5.1.FORCE ON ........................................................................................................................................... 14
5.5.2.FORCE OFF ......................................................................................................................................... 14
5.5.3.AUTO/LOCK MODE .............................................................................................................................. 14
5.5.4.FAULT ................................................................................................................................................... 14
5.6.Relay Outputs ............................................................................................................................................... 15
5.6.1.ON/OFF................................................................................................................................................. 15
5.6.2.HEATING .............................................................................................................................................. 15
5.6.3.COOLING .............................................................................................................................................. 15
5.6.4.FAULT ................................................................................................................................................... 15
5.7.Using Twin / Triple / Quad systems .............................................................................................................. 16
5.7.1.When Fault output is being used ........................................................................................................... 16
5.7.2.When Fault output is not being used ..................................................................................................... 16
5.8.Using single split units in a group ................................................................................................................. 17
5.8.1.When Fault output is being used ........................................................................................................... 17
5.8.2.When Fault output is not being used ..................................................................................................... 17
5.9.Using MXZ split units .................................................................................................................................... 18
6.Status LEDs ........................................................................................................................................................ 19
6.1.Relay Status ................................................................................................................................................. 19
6.2.Communication Status ................................................................................................................................. 19
7.Control for ATA systems ................................................................................................................................... 20
7.1.Setpoint control ............................................................................................................................................ 20
7.2.Mode control................................................................................................................................................. 21
7.3.Fan Speed control ........................................................................................................................................ 22
7.4.Occupancy Mode ......................................................................................................................................... 23
7.5.Force On ...................................................................................................................................................... 24
7.6.Force Off ...................................................................................................................................................... 24
7.7.Auto Mode / Lock Mode ............................................................................................................................... 24
7.7.1.Auto Mode ............................................................................................................................................. 24
7.7.2.Lock Mode ............................................................................................................................................. 24
Page 4
7.8.External Fault ............................................................................................................................................... 24
7.9.ON/OFF status output .................................................................................................................................. 25
7.10.Heating status output ................................................................................................................................... 25
7.11.Cooling status output .................................................................................................................................... 25
7.12.Fault output .................................................................................................................................................. 26
7.12.1.Using Twin / Triple / Quad systems ....................................................................................................... 26
8.Failsafe AUTO Mode ........................................................................................................................................... 29
8.1.Failsafe trigger thresholds ............................................................................................................................ 29
8.2.Power up ...................................................................................................................................................... 29
8.3.Triggering failsafe AUTO mode .................................................................................................................... 29
9.Deadband mode .................................................................................................................................................. 30
9.1.Settings ........................................................................................................................................................ 30
9.2.Operation ..................................................................................................................................................... 30
9.3.Initialisation .................................................................................................................................................. 31
10.Setpoint Offset .................................................................................................................................................... 32
10.1.Settings ........................................................................................................................................................ 32
10.2.Operation ..................................................................................................................................................... 32
11.Modbus RTU ....................................................................................................................................................... 34
11.1.Modbus background ..................................................................................................................................... 34
11.2.Modbus registers .......................................................................................................................................... 34
11.3.Modbus connections .................................................................................................................................... 34
12.Modbus register tables ...................................................................................................................................... 35
12.1.Holding registers .......................................................................................................................................... 35
12.2.Input registers ............................................................................................................................................... 39
12.3.Discrete Inputs ............................................................................................................................................. 40
12.4.Coils ............................................................................................................................................................. 41
Appendix A – Compatible Air-To-Air units ................................................................................................................. 42
1. Safe
t
Symbols us
e
Warning:
Describes pr
e
Caution:
Describes pr
e
Warning
:
• Ask the d
e
- Imprope
r
• Use the s
p
not appli
e
- Inadequ
a
• Never rep
- If the uni
t
• Have all e
Regulatio
- If the po
w
• Keep the
e
- Contact
m
• To dispo
s
Caution:
• Safely di
s
- Packing
m
- Tear apa
which has
¾ Befor
e
“Safet
y
¾ The “
S
re
g
ard
t
y preca
u
ed in the tex
t
e
cautions that
e
cautions that
:
e
aler or an au
t
r
installation by
t
p
ecified cable
s
e
d to the termi
n
a
te connection
a
p
air the unit. If
t
t
is repaired im
p
e
lectric work d
o
ns" and the in
s
w
er source cap
a
e
lectric parts
a
m
ay result in el
e
s
e of this prod
u
s
pose of the p
a
m
aterials, such
rt and throw a
w
not been torn
a
e
installing the
y
precautions
”
S
afety precauti
o
in
g
safet
y
. Ma
k
u
tions
t
should be ob
s
should be ob
s
t
horised techn
i
t
he user may r
e
s
for wiring. M
a
n
als
a
nd fastening
m
t
he controller
m
p
roperly, electri
c
o
ne by a licen
s
s
tructions giv
e
a
city is inadequ
a
a
way from any
e
ctric shock, fir
e
u
ct, consult y
o
a
cking materia
l
as nails and ot
h
w
ay plastic pack
a
part, they face
unit, make su
r
”
o
ns” provide
v
k
e sure
y
ou fo
s
erved to prev
e
s
erved to prev
e
i
cian to install
e
sult in electric
s
a
ke the conne
c
m
a
y
generate he
m
ust be repair
e
c
shock, or fire
m
s
ed electrician
e
n in this man
u
a
te or electric
w
water - washi
n
e
or smoke
o
ur dealer
l
s
h
er metal or wo
aging bags so
t
the risk of suff
o
r
e you read all
v
ery important
l
low them
e
nt danger of i
n
e
nt damage to
the unit
s
hock, or fire
c
tions securel
y
e
at and cause a
r
ed, consult th
e
m
ay result
according to
"
u
al and alway
s
w
ork is perform
e
n
g water etc…
o
oden parts, ma
t
hat children wil
o
cation
the
points
n
jury or death
the unit.
y
so that any
o
fire
e
dealer
"
Electric Facili
t
s
use a special
e
d improperly, e
y cause stabs
o
l not play with t
h
to the user.
utside forces
a
t
y Engineerin
g
circuit
lectric shock a
n
o
r other inju
r
ies
h
em - If childre
n
a
cting on the
c
g
Standard", "I
n
n
d fire may res
u
n
play with a pl
a
Page 5
c
ables are
n
terior Wire
u
lt
a
stic bag
2. Over
v
The Procon
M
S- and P-ser
equipment. I
t
inputs so tha
It also has di
g
The MelcoR
E
the reading i
s
devices thro
u
connection.
P
The MelcoR
E
is needed.
Compatible
A
Caution:
MAC-397IF
a
CN105/CN9
2
Figure 1 sh
o
Figure 2 sh
o
Air units.
v
iew
M
elcoRETAIL
ies split air c
o
t
has digital o
u
t settings suc
h
gital inputs to
E
TAIL MINI c
o
s
continuous
t
u
gh the RS-4
8
P
lease refer t
o
E
TAIL MINI is
A
ir-To-Air mo
d
a
nd MAC-333
2
connector is
o
ws the Melco
o
ws the CN10
5
MINI Protoc
o
o
nditioning sy
s
u
tputs for stat
u
h
as tempera
t
force certain
o
ntinuously re
t
he MelcoRE
T
8
5 port using
t
o
the Modbus
powered via
t
d
el numbers c
IF units cann
o
used.
RETAIL MINI
5
/CN92 conn
e
o
l Converter is
s
tems).It acts
a
u
s informatio
n
ure set point
c
modes of ope
a
ds data fro
m
T
AIL MINI alw
a
he Modbus R
section for fu
r
t
he CN105/C
N
a
n be found i
n
o
t be connect
e
.
e
ctor on the i
n
s
used for rem
a
s a gateway
n
such as curr
e
c
an be set vi
a
e
ration and fo
r
m
the system
a
a
ys stores up
-
R
TU software
p
r
ther informati
N
92 connecto
n
Appendix A
e
d when the
M
n
door unit PC
B
ote monitorin
g
between the
s
e
nt Heat/Cool
a
a 0-10V or r
e
indication of
a
a
nd changes
c
-
to-date data.
p
rotocol. Valu
e
on.
r
on the indo
o
of this docum
M
elcoRETAIL
B
that the Mel
c
g
and control
o
s
ystem and e
x
mode and F
a
e
sistive output
a
3
rd
party sy
s
onfiguration
w
This data is t
h
e
s can be rea
d
r unit, hence
n
e
nt.
M
INI is conn
e
c
oRETAIL MI
N
o
f Air-to-Air p
r
x
ternal third p
a
a
ult. It has an
a
t
from a 3
rd
pa
s
tem fault.
w
hen necess
a
h
en available
t
d
and chang
e
n
o external p
o
e
cted, as the
s
N
I connects t
o
Page 6
r
oducts (M-,
a
rty
a
logue
rty system.
ry. Because
t
o external
d via this
o
wer supply
s
ame
o
on Air-to-
Page 7
3. Installation
3.1. Physical connection
The MelcoRETAIL MINI has a 1 metre flying lead to connect directly into the CN105/CN92 connector on the controller
PCB.
3.2. Power supply
The MelcoRETAIL MINI is powered from the CN105/CN92 air conditioner host connector at 12V DC and therefore
does not require an external power supply.
3.3. RS-485 connection
The MelcoRETAIL MINI has a 3-way screw terminal to provide Modbus RTU communication via RS-485. See chapter
5.3 for more details.
4. DIP
s
The MelcoR
E
There is a b
a
The followin
g
Note: The M
4.1.
M
Any Modbus
binary, wher
e
To get the Sl
1-3 and 1-4
O
When switch
Holding regi
s
Note: Settin
g
Note: Each
M
s
witch s
e
E
TAIL MINI h
a
a
nk of 8 DIP s
w
g
sections det
a
elcoRETAIL
M
M
odbus Sl
a
Slave ID in t
h
e
the switch p
o
ave ID, add t
o
O
N (1 + 4 + 8
es CONFIG
1
s
ter (see cha
p
g
switches C
O
M
odbus devic
e
e
ttings
a
s a total of 1
2
w
itches labell
e
a
il how the s
w
M
INI must be
p
a
ve ID
h
e range 1 –
3
o
sitions have
Switch
n
1-
1
1-
2
1-
3
1-
4
1-
5
o
gether the v
a
= 13).
1
-1 to 1-5 are
a
p
ter 12.1 for
m
O
NFIG 1-1 to
1
e
connected
o
2
DIP switche
s
e
d CONFIG 1
w
itches are us
e
p
ower cycled
3
0 can be cho
s
the following
v
n
umbe
r
1
2
3
4
5
a
lue for each
s
a
ll set to the
O
m
ore details).
1
-5 all to the
O
o
n the same
R
s
which are u
s
1
and a bank
o
e
d to configu
r
for any chan
g
s
en using swi
t
v
alues:
A
ddress
v
s
witch set ON
.
O
N position th
e
O
FF position i
s
R
S-485 netwo
r
s
ed for config
u
o
f 4 DIP switc
h
e the MelcoR
E
g
es to the DIP
t
ches CONFI
G
v
alue when
s
set ON
1
2
4
8
16
.
For example
e
Slave ID is
s
s
an invalid c
o
r
k must have
a
u
ration of the
h
es labelled
C
E
TAIL MINI.
switch chang
G
1-1 to 1-5.
T
s
witch is
, to set Slave
s
et in softwar
e
o
mbination an
d
a
unique Slav
e
unit.
C
ONFIG
2
.
es to take eff
e
T
he address i
s
ID 13 set swi
t
e
by writing to
d
should not
b
v
e ID.
Page 8
e
ct.
s
set in
t
ches 1-1,
a Modbus
b
e used.
Page 9
4.2. RS-485 communication settings
The RS-485 communication settings are set using switch CONFIG 1-6.
When the switch is in the OFF position the Baud Rate and Parity settings are set in software by writing to Modbus
registers (see chapter 12.1).
1-6 RS-485 communication settings
OFF Baud Rate and Parity set in software
ON 9600 baud, no parity
The number of data bits is fixed at 8 and the number of stop bits is fixed at 1.
4.3. Protocol selection
The RS485 protocol is set using DIP switch CONFIG 1-7, currently only Modbus RTU is supported.
When the switch is in the ON position the Modbus RTU protocol is selected.
1-7 Protocol selection
OFF (Reserved for future use)
ON Modbus RTU
4.4. Auto Mode / Lock Mode selection
The function of the LOCK/AUTO MODE digital input is determined by switch CONFIG 1-8.
When the switch is in the OFF position input LOCK/AUTO MODE is used to enable/disable Auto Mode.
When the switch is in the ON position input LOCK/AUTO MODE is used to enable/disable Lock Mode.
1-8 LOCK/AUTO MODE input function
OFF Enable/disable Auto Mode
ON Enable/disable Lock Mode
4.5. Deadband Mode
The Deadband Mode feature can be enabled using switch CONFIG 2-1.
When the switch is in the OFF position Deadband Mode is disabled.
When the switch is in the ON position Deadband Mode is enabled.
2-1 Deadband Mode
OFF Disabled
ON Enabled
Note: Deadband settings can be changed by writing to Modbus registers (see chapter 12.1 for more details).
Page 10
4.6. Setpoint Limiting
The Setpoint Limiting feature can be enabled using switch CONFIG 2-2.
When the switch is in the OFF position Setpoint Limiting is disabled.
When the switch is in the ON position Setpoint Limiting is enabled.
2-2 Setpoint Limiting
OFF Disabled
ON Enabled
Note: Setpoint Limiting settings can be changed by writing to Modbus registers (see chapter 12.1 for more details).
4.7. Timeout
The Timeout feature can be enabled using switch CONFIG 2-3.
When the switch is in the OFF position the Timeout feature is disabled.
When the switch is in the ON position the Timeout feature is enabled.
2-3 Timeout Feature
OFF Disabled
ON Enabled
Note: The timeout value can be changed by writing to a Modbus register (see chapter 12.1 for more details).
4.8. Input type selection
The input type for the four analogue inputs (S.P, MODE, FAN SPEED, OCC MODE) can be configured using switch
CONFIG 2-4.
When the switch is in the OFF position inputs these inputs are set to voltage (0-10VDC) type.
When the switch is in the ON position inputs these inputs are set to resistive () type.
2-4 Analogue input type
OFF Voltage (0-10VDC)
ON Resistive ()
Page 11
4.9. Summary
Switch Description Notes
1-1
Modbus Slave ID
Node ID 1 – 30 (see chapter 4.1).
All OFF = Invalid combination.
All ON = Software selectable Slave ID.
1-2
1-3
1-4
1-5
1-6 Comms Settings OFF = Baud rate and parity software selectable
ON = 9600 baud, no parity
1-7 Protocol Selection
OFF = (Reserved for future use)
ON = Modbus RTU
1-8 Auto Mode / Lock Mode OFF = AUTO/LOCK MODE input used to enable Auto Mode
ON = AUTO/LOCK MODE input used to enable Lock Mode
2-1 Deadband Mode
OFF = Deadband Mode disabled
ON = Deadband Mode enabled
2-2 Setpoint Limiting OFF = Setpoint Limiting disabled
ON = Setpoint Limiting enabled
2-3 Timeout
OFF = Timeout feature disabled
ON = Timeout feature enabled
2-4 Input Type Selection OFF = Analogue inputs are voltage (0-10VDC) type
ON = Analogue inputs are resistive () type
5. Con
n
5.1. O
v
5.2. C
N
The MelcoR
E
MelcoRETAI
5.3. R
S
The RS-485
To ensur
e
5.3.
On the Melc
o
to this head
e
n
ections
v
erview
N
92/CN10
E
TAIL MINI fl
y
L MINI does
n
S
-485
connector ha
s
e
reliable Mod
b
1. RS-485 te
r
o
RETAIL MIN
e
r will enable t
5
y
ing lead con
n
n
ot require an
s
A, B and gr
o
b
us communi
c
r
mination re
s
I PCB there’s
he 120 term
n
ects to either
external pow
e
o
und (-) conn
e
c
ations the gr
o
s
istor
a 2-pin jump
e
ination resist
o
the CN92 or
C
e
r suppl
y
.
e
ctions.
o
und must b
e
e
r header loc
a
o
r to the RS-4
C
N105 conn
e
e
connected t
o
a
ted next to th
e
8
5 bus.
ctor on the in
d
o
the Modbus
e
RS-485 con
d
oor unit PC
B
Master devic
e
nector. Fittin
g
Page 12
B
. The
e
.
g
a jumper
5.4. A
n
5.4.
DIP switch 2
-
each input in
When set to
t
When set to
t
5.4.
The input la
b
5.4.
The input la
b
5.4.
The input la
b
5.4.
The input la
b
n
alogue I
n
1. Input type
-
4 determine
s
dividually; all
t
he voltage r
a
t
he resistanc
e
2. S.P.
b
elled S.P. ca
n
3. MODE
b
elled MODE
c
4. FAN SPE
E
b
elled FAN S
P
5. OCC MOD
b
elled OCC c
a
n
puts
selection
s
the input typ
e
four will be s
e
a
nge (DIP swi
t
e
range (DIP
s
n
be used to
c
c
an be used t
o
E
D
P
EED can be
u
E
a
n be used to
s
e
for all four i
n
e
t to the same
ch 2-4 OFF)
a
s
witch 2-4 ON
)
c
ontrol the uni
t
o
control the
u
u
sed to contr
o
s
et the curren
n
puts, see se
c
type.
a
voltage bet
w
) any value o
f
t
Setpoint, se
e
u
nit Mode, se
e
o
l the unit Fan
n
t occupancy
s
c
tion 4.8. It is
n
w
een 0 and 1
0
f
resistance c
a
e
chapter 7.1
f
e
section 7.2 f
o
Speed, see
s
s
tate, see sec
t
n
ot possible t
o
VDC can be
a
a
n be applied
t
f
or more detai
o
r more detail
s
ection 7.3 for
t
ion 7.4 for m
o
o
set the inpu
t
a
pplied to the
t
o the input.
i
ls.
l
s.
more details.
o
re details.
Page 13
t
type for
input.
5.5. D
i
The four digi
t
of a relay).
5.5.
The input la
b
5.5.
The input la
b
5.5.
The input la
b
switch 1-8.
S
5.5.
The input la
b
details.
i
gital Inp
u
t
al inputs are
o
1. FORCE O
N
b
elled FORC
E
2. FORCE O
F
b
elled FORC
E
3. AUTO/LO
C
b
elled
A
UTO/
L
S
ee section 7.
7
4. FAULT
b
elled FAULT
u
ts
o
f the volt-fre
e
N
E
O
N
is used t
o
F
F
E
OF
F
is used
C
K MODE
L
OCK MOD
E
i
7
for more de
t
is used to ind
i
e
type, so just
o
force the un
to force the u
n
i
s used for eit
h
ails.
i
cate the pres
e
t
require an o
p
it to switch o
n
nit to switch
o
h
er the Auto
o
ence of a faul
p
en or closed
c
n
, see section
ff, see sectio
n
o
r Lock functi
o
t with 3
rd
part
y
c
ircuit conne
c
7.5 for more
d
n
7.6 for more
o
n, depending
y
equipment,
s
c
tion (i.e. the
o
d
etails.
details.
on the state i
s
ee section 7.
Page 14
o
utput side
s DIP
8 for more
5.6. R
e
The relay ou
t
5.6.
The ON/OF
F
5.6.
The HEATI
N
temperature
5.6.
The COOLI
N
return air set
5.6.
The FAULT
o
e
lay Outp
u
t
puts are use
d
1. ON/OFF
F
output indic
a
2. HEATING
N
G output indi
c
setpoint. See
3. COOLING
N
G output indi
c
point. See se
c
4. FAULT
o
utput indicat
e
u
ts
d
for status in
f
a
tes whether t
h
c
ates the unit
section 7.10
f
c
ates the unit
c
tion 7.11 for
m
e
s if there is a
f
ormation.
h
e unit is run
n
is in Heat or
A
f
or more detai
is in Cool or
A
m
ore details.
fault with the
n
ing or not, se
A
uto mode an
d
i
ls.
A
uto mode an
unit, see sec
t
e section 7.9
f
d
the return a
i
d the return a
t
ion 7.12 for
m
f
or more deta
i
r temperatur
e
i
r temperatur
e
m
ore details.
ils.
e
is less than t
e
is greater th
a
Page 15
he
a
n the
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Procon MelcoRETAIL MINI Installation guide

Brand
Procon
Model
MelcoRETAIL MINI
Category
Split-system air conditioners
Type
Installation guide
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