Omega CN142 Series Owner's manual

CN142

Controller

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User’s Guide

MADE IN ITALY

Servicing North America:

U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047

Stamford, CT 06907-0047 USA

Toll-Free: 1-800-826-6342 (USA & Canada only)

Customer Service: 1-800-622-2378 (USA & Canada only)

Engineering Service: 1-800-872-9436 (USA & Canada only)

Tel: (203) 359-1660 Fax: (203) 359-7700

e-mail: [email protected]

For Other Locations Visit

omega.com/worldwide

omega.com [email protected]

The information contained in this document is believed to be correct, but OMEGA

accepts no liability for any errors it contains, and reserves the right to alter specifications

without notice.

WARNING: These products are not designed for use in, and should not be used for, human

applications.

User manual - ATR 142 3

Summary

1 Model Identication ........................................................................ 7

2 Technical Data ..................................................................................7

2.1 General Features .....................................................................7

2.2 Hardware Features .................................................................8

2.3 Software Features ..................................................................9

3 Dimensions and Installation ......................................................... 9

4 Electrical wirings ..........................................................................10

4.1 Wiring diagram .....................................................................10

5 Conguration EASYUP ..................................................................14

6 Display and Keys Functions .........................................................15

6.1 Numeric Indicators (Display) ............................................. 15

6.2 Meaning of Status Lights (Led) .........................................15

6.3 Keys ....................................................................................... 16

7 Controller Functions ......................................................................16

7.1 Modifying Main Setpoint and Alarm Setpoint Values . 16

7.2 Auto-Tune ............................................................................... 17

7.3 Manual Tuning ......................................................................17

7.4 Automatic Tuning ...............................................................17

7.5 Soft Start .................................................................................18

7.6 Automatic/Manual Regulation for % Output Control 18

7.7 Pre-Programmed Cycle .......................................................19

7.8 Memory Card (optional) .....................................................20

7.9 Loading default values........................................................21

7.10 LATCH ON Functions ............................................................21

7.11 Digital Input Functions .......................................................23

7.12 Dual Action Heating-Cooling ............................................ 24

8 Timer operation ..............................................................................27

8.1 Single Timer ...........................................................................27

4 ATR 142 - User manual

8.2 Dual Timer..............................................................................28

8.3 Dual Sequential Timer ........................................................28

8.4 Dual Timer Loop ..................................................................29

8.5 Relating Timers to Alarms .................................................30

9 Serial Communication ..................................................................31

9.1 Slave ....................................................................................... 31

9.2 Master .....................................................................................37

9.2.1 Master Mode in retransmission ........................................37

9.2.2 Master Mode Remote process ...........................................39

10 Conguration .................................................................................39

10.1 Modify Conguration Parameter .....................................39

11 Table of Conguration Parameters ...........................................40

12 Alarm Intervention Modes ........................................................... 55

13 Table of Anomaly Signals.............................................................60

14 Summary of Conguration parameters ...................................61

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User manual - ATR 142 7

Introduction

Thank you for choosing a Omega controller.

With the CN142 model Omega makes available in a single

device multiple options related to sensor input and actuators

command in addition to the extended power range 24…230

as relay or SSR command, the user or retailer can reduce

stock by rationalising investment and device availability. The

series includes a version equipped with serial communication

Memory cards which are provided with internal battery and

therefore do not require cabling to power the controller.

Refer to the table below to easily select preferred model.

Technical Data

General Features

Display

Operating

temperature

Sealing

Material

Weight

8 ATR 142 - User manual

Hardware Features

Analogue

input

via software.

Thermocouple type:

K, S, R, J. Automatic

compensation of cold

Thermoresistance:

Linear

Potentiometers:

scale) for thermocouple

input, thermo- resistan-

ce and V/mA.

Cold junction accuracy

Impedance:

Relay

output

command and/or alarm

output

Contacts:

for resistive loads

SSR

output

command output and/

or alarm output.

Supply

Power supply

Power consumption

NTC2252 ohm

(CN142-ABC)

(CN142-ABC-T)

User manual - ATR 142 9

Software Features

Regulation

algorithms

ON-OFF with hysteresis.

P, PI, PID, PD with proportional time

Proportional band

Integral time

Derivative time

Controller

functions

alarms, protection of command and alarm

setpoints, activation of functions via

digital input, preset cycle with Start/Stop.

Dimensions and Installation

1U

1C

CN1

1 6

123

Dima di foratura

28.5 x 70.5 mm

Frontal panel cut-out

Spessore suggerito

2 ÷ 8 mm

Suggested thickness

77 mm

mm 53

53 mm

7

42mm

inserimento

Memory Card

42mm

insert

Memory Card

CN1

1 6

Memory Card (optional)

with battery

Memory Card (optional)

Cod. MEMORY 2100.30.005

Cod. MEMORY 2100.30.003

Guarnizione per 32x74

Cod. 1600.00.082 (optional)

Gasket for 32x74

10 ATR 142 - User manual

Electrical wirings

Although this controller was designed to resist

electromagnetic interferences in industrial envi-

ronments, please observe following safety gui-

delines:

• Separate the control line from the power wires.

• Avoid proximity of remote control switches, electroma-

gnetic contactors, powerful engines and in all instances

• Avoid proximity of power groups, especially those with

phase control

Wiring diagram

10A 230V

Cosf 1

3A 230V

Cosf 0.8

Q1

PTC/NTC

-

+

Tc

+VDC

SSR

1 2 3 4

5

6 7 8 9

10 11 12

-

+

I

V/I

+

-

PT/NI100/1K

2 wire 4/20mA

Power

5A 230V

Cosf 1

1A 230V

Cosf 0.8

Q2

Memory

1

CNxxx-xx

-

+

SUPPLY

10A 23a0V

Cosf 1

3A 230V

Cosf 0.8

Q1

PTC/NTC

-

+

Tc

+VDC

SSR

1 2 3 4

5

6 7 8 9

10 11 12

-

+

I

V/I

+

-

PT/NI100/1K

2 wire 4/20mA

Power

Memory

1

-

+

CNxxx-xxT

-

+

RS485

SUPPLY

CN142-ABC CN-ABC-T

Power Supply

1

2

24...230V

AC/DC

Switching power supply with extended

range

User manual - ATR 142 11

AN1 Analogue Input

-

+

Tc

11 12

Shield/Schermo

For thermocouples K, S, R, J.

• Complywithpolarity

• Forpossibleextensions,use

compensated cable and terminals

suitable for the thermocouples

used(compensated)

• Whenshieldedcableisused,itshould

be grounded at one side only

10 11 12

PT/NI100

Shield/Schermo

A

B

C

For thermoresistances PT100, NI100

• Forthethree-wireconnectionuse

wires with the same section

• Forthetwo-wireconnectionshort-

circuit terminals 10 and 12

• Whenshieldedcableisused,itshould

be grounded at one side only

10

11

12

RED

WHITE

RED

Shield/Schermo

PTC/NTC

10 11

For thermoresistances NTC, PTC,

PT500, PT1000 e potentiometers

• Whenshieldedcableisused,itshould

be grounded at one side only to avoid

ground loop currents

Shield/Schermo

+VDC

9

10 11 12

V/I

+-

For linear signals V/mA

• Complywithpolarity

• Whenshieldedcableisused,itshould

be grounded at one side only

12 ATR 142 - User manual

Examples of Connection for linear input

0...10V

1112

For signals 0….10V

• Complywithpolarity

PRESSURE TRANSMITTER

SENSORE DI PRESSIONE

0/4...20mA

A

B

C

1112 9

For signals /….mA with three-wire

sensor

• Complywithpolarity

C = Sensor output

B = Sensor ground

A = Sensor power supply (12V/30mA)

EXTERNAL SUPPLY

ALIMENTAZIONE ESTERNA

PRESSURE TRANSMITTER

SENSORE DI PRESSIONE

0/4...20mA

B

C

1112

For signals /..mA with external

power of sensor

• Complywithpolarity

C = Sensor output

B = Sensor ground

PRESSURE TRANSMITTER

SENSORE DI PRESSIONE

C

4...20mA

A

12 9

For signals /...mA with two-wire

sensor

• Complywithpolarity

C = Sensor output

A = Sensor power supply (12V/30mA)

Serial input

1176

-

+

Shield/Schermo

RS485

RS485 Modbus RTU communication

Do not use LT (line termination)

resistors

• Fornetworkswithmorethanve

instruments supply in low voltage

User manual - ATR 142 13

Relay Q1 Output

7 6 5 4

Q1

Q2

3

Capacity:

Q1: 8A, 250Vac,resistive loads,10



opera-

tions. 30/3A, 250Vac, cosφ=0.3, 10



operations.

Q2: 5A, 250Vac, resistive loads, 105

operations.

20/2A, 250Vac, cosφ=0.3, 10



ope-

rations.

SSR output

SSR

8 9

SSR command output 12V/30mA

Digital Input

10 11

Digital input according to parameter

DGT.i .

The use of digital input in this version is

possible only with TC sensors or …V,

/…mA and …mV signals

14 ATR 142 - User manual

To simplify the setting of parameters and the integration of

Omega introduces the EASY-UP coding which allows to set

sensors and/or command outputs in a single step.

By means of the code listed in the data sheet enclosed to the

sensor or actuator (SSR, motorized valve etc..) the EASY-UP

coding will set the relevant main parameters on the control-

lers (ex. selection of PT100 on parameter “Sensor” and the

corresponding measuring range on parameters “Lower and

Upper limits of setpoint”)

-

signal.

User manual - ATR 142 15

6 Display and Keys Functions

5

4

3

8

7

6

2

1

M T R

2 3

9

10

12

11

ATR 142

1

6.1 Numeric Indicators (Display)



1234

Normally displays the process. During the

con guration phase, it displays the parameter

being inserted.



1234

Normally displays the setpoint. During the

con guration phase, it displays the parameter

value being inserted.

6.2 Meaning of Status Lights (Led)



1

ON when the output command is on. For

motorised valve command, led is ON when valve is

opening and blinks when closing.



2

ON when alarm  is on.



3

ON when alarm  is on.



M

ON when the “Manual” function is on.



T

ON when the controller is running an “Autotuning”

cycle.



R

ON when the controller communicates via serial

port.

16 ATR 142 - User manual

6.3 Keys



• Allowstodecreasemainsetpoint.

• Duringcongurationphase,allowstoslide

through parameters. Together with

SET

key it

modies them.

• Pressedafter

SET

key it allows to decrease

alarm setpoint.



• Allowstoincreasemainsetpoint.

• Duringcongurationphase,allowstoslide

through parameters. Together with

SET

key it

modies them.

• Pressedafter

SET

key it allows to increase alarm

setpoint.



SET

• Allowstodisplayalarmsetpointandrunsthe

autotuning function.

• Allowstomodifycongurationparameters.



FNC

• Allowstoruntheautotuningfunctionandto

select Manual/automatic operation.

•

Allows to enter/exit for congurator procedure.

7 Controller Functions

7.1 Modifying Main Setpoint and Alarm

Setpoint Values

Setpoint value can be changed by keyboard as follows:

Press Eect Do



or

Value on display 

changes

Increase or decrease

main setpoint



SET

Visualize alarm

setpoint on display 



or

Value on display 

changes

Increase or decrease

the alarm set point

value

User manual - ATR 142 17

7.2 Auto-Tune

Tuning procedure calculates the controller parameters and

can be manual or automatic according to selection on para-

meter 46

tune

.

7.3 Manual Tuning

Manual procedure allows the user greater exibility to decide

when to update PID algorithm parameters. The procedure

can be activated in two ways.

• RunningTuningbykeyboard:

Press

FNC

key until display 1 shows the writing

tune

with

display 2 showing

o FF

, press , display 2 shows

on

. The

T

led switches on and the procedure begins.

• RunningTuningbydigitalinput:

Select

tune

on parameter 50

d G t.i .

At rst activation of digital input (commutation on front panel)

T

led switches ON and at second activation switches o.

7.4 Automatic Tuning

Automatic tuning activates whenever the controller is switched

on or when the setpoint is modied to a value over 35%.

To avoid an overshoot, the threshold where the controller

calculates new PID parameters is determined by the setpoint

value minus the “Set Deviation Tune” (Parameter 47

s.d.tu.

).

To exit Tuning and keep PID values unchanged, just press the

FNC

key until display 1 shows the writing

tune

with the display

showing

on

, press , display 2 shows

off

.

The

T

led switches o and the procedure nishes.

18 ATR 142 - User manual

7.5 Soft Start

To reach the setpoint the controller can follow a gradient

expressed in units (e.g. degree/hour).

Enter this gradient on parameter 51

Gra d.

with the chosen

units/hour; only on subsequent activation the controller

uses soft start function.

Automatic/manual tuning cannot be enabled if the Soft start

is active.

7.6 Automatic/Manual Regulation for %

Output Control

This function allows to select automatic functioning or ma-

nual command of the output percentage.

Parameter 49

Au.ma.

, can select two methods.

• Firstselection

en.

pressing the

FNC

key display 1 shows

p.---

, while display 2

shows

Auto

.

Press the

key to select

man.

mode; it is now possible, to

change the output percentage using the keys

and

. To return to automatic mode, using the same procedure,

select

auto

on display 2:

M

led switches o and functio-

ning returns to automatic mode.

• Secondselection

en .st.

same functioning, but with two important variants:

• Ifthereisatemporarypowerfailureorafterswitch-o,

manual functioning as well as the previous output

percentage value will be maintained at restarting.

• Ifthesensorbreaksduringautomaticfunctioning,con-

troller moves to manual mode while maintaining the

User manual - ATR 142 19

output percentage command unchanged as generated

by the PID immediately before breakage.

7.7 Pre-Programmed Cycle

Pre-programmed cycle function activates by setting

p r. cY.

on

parameter 48

o p.Mo.

Controller reaches setpoint1 basing on the gradient set on pa-

rameter 51

Gra d.

, then it reaches max. power up to setpoint2.

When the process reaches max. power, this setpoint is main-

tained for the time set on parameter 52

m a . t.i .

At expiry, process will reach ambient temperature according

to gradient entered on parameter 64

f a . G r.

, then command

output will be disabled and display will visualize

Sto p

.

Setpoint

Time

Setpoint 1

Setpoint 2

Maintenance time

Mantenimento

Cooling

RareddamentoMax Power

Max Potenza

Rising gradient

Gradiente di salita

Cycle starts at each activation of the controller, or via digital

input if it is enabled for this type of functioning (parameter

50

d G t.i .

).

20 ATR 142 - User manual

7.8 Memory Card (optional)

Parameters and setpoint values can be duplicated from one

controller to another using the Memory card.

There are two methods:

• Withthecontrollerconnectedtothepowersupply

Insert the memory card when the controller is o.

On activation display 1 shows

memo and display 2 show

---- (Only if the correct values are saved in the memory

card). By pressing the

key display 2 shows Lo a d, then

conrm using the

FNC

key. The controller loads the new data

and starts again.

• Withthecontrollernotconnectedto

power supply.

The memory card is equipped with

an internal battery with an autonomy

of about 1000 operations.

Insert the memory card and press the

programming button .

When writing the parameters, the led turns to red and on com-

pleting the procedure it turns to green. It is possible to repeat

the procedure without any particular attention.

WARNUNG

Updating Memory Card

To update the memory card values, follow the procedure

described for the rst method, setting display 2 to

---- so as

not to load the parameters on controller



.

Enter conguration level and change at least one parameter.

Exit conguration. Changes are saved automatically.



If on activation the controller does not display

memo

it means no data

have been saved on the memory card, but it is possible to update values.

User manual - ATR 142 21

7.9 Loading default values

This procedure allows to restore factory settings of the device

Press Eect Do



FNC

for  sec.

Display  shows 0000

with the st digit

ashing, while display

 shows

pass



or

Change the ashing

digit and move to the

next one using the

SET

key.

Enter password

9999



SET

to conrm

Instrument loads

default settings

Turn o and restart

the instrument

7.10 LATCH ON Functions

For use with input

P o t .1

(potentiometer 6K) and

Po t.2

(potentiometer 150K) and with linear input (0…10V,

0...40mV, 0/4…20mA), it is possible to associate start value

of the scale (parameter 6

Lo .L.i .

) to the minimum position

of the sensor and value of the scale end (parameter 7

u p. L.i .

)

to the maximum position of the sensor (parameter 8

La tc.

congured as

std .

). It is also possible to x the point in which

the controller will display 0 (however keeping the scale range

between

Lo .L.i .

and

u p. L.i .

) using the “virtual zero” option by

setting

u.0st.

or

u.0in.

in parameter 8

La tc.

If you set

u.0in.

the virtual zero will reset after each activation of the device;

if you set

u.0st.

the virtual zero remains xed once tuned.

To use the LATCH ON function, congure according to requi-

red operation the parameter

La tc.



The tuning procedure starts by exiting the conguration after changing

the parameter.

22 ATR 142 - User manual

For the calibration procedure refer to the following table:

Press E  e c t Do



FNC

Exit parameters

con guration. Display 

shows the writing

La tc.

Place the sensor on the

minimum operating

position (associated with

Lo .L.i .

)



Set the value to

minimum.

The display shows

Lo w

Place the sensor on the

maximum operating

position

(associated with

u p. L.i .

)



Set the value to

maximum.

The display shows

Hi G t

To exit standard

procedure press

FNC

.

For “virtual zero”

settings place the sensor

on zero point.



SET

Set the virtual zero

value. The display shows

ui rt .

NB: for selection

of

u.0in.

the procedure

on point  should

be followed at each

re-activation.

To exit the procedure

press

FNC

.

Max

Min Zero

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