Omega CN2516, CN2508, CN2504 User guide

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- 1/8 - 1/4 DIN LIMIT CONTROLLERS

CN2516, CN2508, CN2504

CAUTION: Installation should be only performed by

technically competent personnel. Local Regulations regarding electrical installation & safety must be observed.

1. INSTALLATION

The models covered by this manual have three different DIN case sizes (refer to section 9). Some installation details vary between models. These differences have

been clearly shown.

Note: The functions described in sections 2 thru 8 are common to all models.

Installing Option Modules

Din Size Instrume

CPU PCB

Option Module 1

(Fixed Limit Relay)

Option Module 2

/8 & 1/4 Din Size

Instruments

CPU PCB

Option Module B

(not used on Limit

Controllers)

Option Module 2

Option Module 1

(Fixed Limit Relay)

To access module A, first detach the PSU and CPU boards from the front by lifting first the

upper, and then lower mounting struts. Gently separate the boards.

a. Plug the required option modules into the correct connectors, as shown below. b. Locate the module tongues in the corresponding slot on the opposite board. c. Hold the main boards together while relocating back on the mounting struts. d. Replace the instrument by aligning the CPU and PSU boards with their guides

in the housing, then slowly push the instrume

Note: Option modules are automatically detected at power up.

Option Module Connectors

Option Slot 1

(Fixed Limi

Relay

Option Slot 2

Connecto

PL4A

nts

Din Size Instruments

Mounting Struts

Option Module A

Option Module 3

PSU PCB

Mounting Struts

Option Module A

Option Module 3

PSU PCB

nt back into position.

Option Slot A

Connectors PL5 & PL6

Option Slot 3

Conn

ector

PL4B

Panel-Mounting

The mounting panel must be rigid, and may be up to

6.0mm (0.25inch) thick. Cut-out sizes are:

Cut-Out Dim A Cut-Out Dim B

& 1/8 Din = 45mm 1/

/4 Din = 92mm 1/8 & 1/4 Din = 92mm

For n multiple instruments mounted side-by-side, cut-out A is 48n-4mm (

& 1/8 Din) or 96n-4mm (1/4 Din)

Din = 45mm

Tolerance +0.5, -0.0mm

Slide mounting clamp over the instrument

Mounting Panel

housing towards rear face of mounting panel until

Instrument

Housi

the tongues engage in ratchets and instrument is clamped in position.

Ratchets

Gasket

Hold instrument firmly in position (apply pressure to bezel only)

CAUTION: Do not remove the panel

gasket; it is a seal against dust and

moisture.

Rear Terminal Wiring

These diagra

USE COPPER CONDUCTORS (EXCEPT FOR T/C INPUT)

Single Strand wire gauge: Max 1.2mm (18SWG)

Din Size Instruments

ms show all possible option combinations. The actual

connections required depends on the exact model and options fitted.

CAUTION: Check information label on housing for correct operating

voltage before connecting supply to Power Input Fuse: 100 – 240V ac – 1amp anti-surge

24/48V ac/dc – 315mA anti-surge

Note: At first power-up the message

is displayed, as described in section 6 of this manual. Access to other menus is denied until configuration mode is completed

2. SELECT MODE

Select mode is used to access the configuration and operation menu functions. It can be accessed at any time by holding down and pressing . In select mode, press or to choose the required mode, press to enter. An unlock code is required to prevent unauthorised entry to Configuration, & Setup modes. Press or to enter the unlock code, then press to proceed.

Mode Upper

Display

Lower

Display

Description Default

Unlock

Codes

Operator Normal operation None

Set Up Tailor settings to the application

Configuration Configure the instrument for use

Product Info Check manufacturing information None

Note: The instrument will always return automatically to Operator mode if there is no key activity for 2 minutes.

3. CONFIGURATION MODE

First select Configuration mode from Select mode (refer to section 2). Press to scroll through the parameters, then press or to set the required value. Press to accept the change, otherwise parameter will revert to previous value. To exit from Configuration mode, hold down and press , to return to Select mode.

Note: Parameters displayed depends on how instrument has been configured. Refer to user guide (available from your supplier) for further details. Parameters marked * are repeated in Setup Mode.

Parameter Lower

Input Range/Type

Code Input Type &

Range

B: 100 - 1824 ºC L: 0.0 - 537.7 ºC

B: 211 - 3315 ºF L: 32.0 - 999.9 ºF

C: 0 - 2320 ºC N: 0 - 1399 ºC Pt100: –199 - 800 ºC

C: 32 - 4208 ºF N: 32 - 2551 ºF Pt100: –328 - 1472 ºF

J: –200 - 1200 ºC R: 0 - 1759 ºC Pt100: –128.8 - 537.7 ºC

J: –328 - 2192 ºF R: 32 - 3198 ºF Pt 100: –199.9 - 999.9 ºF

J: –128.8 - 537.7 ºC S: 0 - 1762 ºC 0 - 20 mA DC

J: –199.9 - 999.9 ºF S: 32 - 3204 ºF 4 - 20 mA DC

K: –240 - 1373 ºC T: –240 - 400 ºC 0 - 50 mV DC

K: –400 - 2503 ºF T: –400 - 752 ºF

K: –128.8 - 537.7 ºC T: –128.8 - 400.0 ºC 0 - 5 V DC

K: –199.9 - 999.9 ºF T: –199.9 - 752.0 ºF 1 - 5 V DC

L: 0 - 762 ºC 0 - 10 V DC

L: 32 - 1403 ºF

Note: Decimal point shown in table indicates temperature resolution of 0.1° Parameter Lower

Scale Range Upper Limit Scale Range Lower Limit

Decimal point position

Process Variable Offset

Limit Action

Setpoint Upper Limit Setpoint Lower Limit

Alarm 1Type

High Alarm 1 value* Low Alarm 1 value* Band Alarm 1 value* Dev. Alarm 1 value* Alarm 1 Hysteresis*

Upper

Display

Adjustment range & Description Default

Display

See following table for possible codes

Code Input Type &

Upper

Display

Range

PtRh20% vs. 40%: 0 - 1850 ºC

Adjustment range & Description Default

Code Input Type &

Range

Scale Range Lower Limit +100

to Range Maximum

Range Minimum to

Scale Range Upper Limit -100

=XXXX, =XXX.X, =XX.XX, =X.XXX

(non-temperature ranges only)

Span of controller

(see CAUTION note at end of section)

High Limit.

Limit relay is energised when

process “safe” (PV < Limit Setpoint)

Low Limit.

Limit relay is energised when

process “safe” (PV > Limit Setpoint)

Current Setpoint to Scale Range maximum R/max

Scale Range minimum to Current Setpoint R/min

Process High Alarm

Process Low Alarm

Deviation Alarm

Band Alarm

No alarm

Scaled Range Minimum to

scaled Range Maximum in display units

1 LSD to span from setpoint in display units

+/- Span from setpoint in display units

1 LSD to full span in display units

PtRh20% vs 40%: 32 - 3362 ºF

10 - 50 mV DC

2 - 10 V DC

Range max

(Lin=1000) Range min

(Linear=0)

Range Max

Range Min

Value

Parameter Lower

Display

Upper

Adjustment range & Description Default

Display

Value

Alarm 2 Type* High Alarm 2

value* Low Alarm 2 value* Band Alarm 2

Options as for alarm 1

Range Max

Range Min

value* Dev. Alarm 2 Value* Alarm 2 Hysteresis*

Limit Output Relay

Alarm 1, Direct

Alarm 1, Reverse

Alarm 2, Direct

Alarm 2, Reverse

Logical Alarm 1 OR 2, Direct

Output 2 Usage

Logical Alarm 1 OR 2, Reverse

Logical Alarm 1 AND 2, Direct

Logical Alarm 1 AND 2, Reverse

Limit Annunciator, Direct Limit Annunciator, Reverse Retransmit Limit SP Output

Retransmit PV Output

0 to 5 V DC output 1

Linear Output 2 Range

0 to 10 V DC output

2 to 10 V DC output 0 to 20 mA DC output 4 to 20 mA DC output

Retransmit Output 2 Scale maximum Retransmit Output 3 Scale minimum

-1999 to 9999

(display value at which output

will be maximum)

-1999 to 9999

(display value at which output

will be minimum)

Range max

Range min

Output 3 Usage As for output 2 Linear Output 3

Range Retransmit Output 3 Scale maximum Retransmit Output 3 Scale minimum

As for output 2

-1999 to 9999

(display value at which output

will be maximum)

-1999 to 9999

(display value at which output

will be minimum)

Range max

Range min

PV is visible in Operator mode

Display Strategy

PV not visible in Operator mode

Displays in Operator mode

when Limit Output is not active

Serial Communications Protocol

Serial Communications Bit Rate

Comms Address

1 to 255 (Modbus), 1 to 99 (ASCII)

Comms Write

Configuration Lock Code

Notes: Output 1 is always a Latching Limit Relay output.

ASCII

Modbus with no parity

Modbus with Even Parity

Modbus with Odd Parity

1.2 kbps

2.4 kbps

4.8 kbps

9.6 kbps

19.2 kbps

Read/Write

Read only

0 to 9999

If Option Slot A has the Digital Input module fitted, this always functions as a Remote Reset, duplicating the function of the Reset) key .

As these functions cannot be changed, no Configuration menus are required.

CAUTION: Process Variable Offset can be used to modify the

measured value to comp

ensate for probe errors. Positive values increase the reading, negative values are subtracted. This parameter is effectively, a calibration adjustment and MUST be used with care.

There is no front panel indication of when this parameter is in use.

Page 2

4. SETUP MODE

Note: Configuration must be completed before adjusting Setup parameters.

First select Setup mode from Select mode (refer to section 2). The Setup LED will light while in Setup mode. Press to scroll through the parameters, then press or to set the required value. To exit from Setup mode, hold down and press to return to Select mode.

Note: Parameters displayed depends on how instrument has been configured.

Parameter Lower

Display

Upper Display Adjustment

Range & Description

Default

Value

R/max if

Limit Setpoint value

Scaled Range Minimum to

scaled Range Maximum

R/min if

Limit Hysteresis

Input Filter Time Constant

High Alarm 1 value R/max

Low Alarm 1 value

Deviation Alarm 1 Value

1 LSD to full span in display units,

on the safe side of the limit SP

OFF or 0.5 to 100.0 secs

(see CAUTION note below)

Scaled Range Minimum to

scaled Range Maximum

±Span from SP in display units

R/min

Band Alarm 1 value 1 LSD to span from setpoint

Alarm 1 Hysteresis 1 LSD to full span in display units

High Alarm 2 value R/max

Low Alarm 2 value

Deviation Alarm 2 Value

Scaled Range Minimum to

scaled Range Maximum

±Span from SP in display units

R/min

Band Alarm 2 value 1 LSD to span from setpoint

Alarm 2 Hysteresis 1 LSD to full span in display units

Setup Lock Code 0 to 9999

Note: Operator mode screens follow, without exiting from Setup mode.

CAUTION: An excessively large filter time could significantly delay

detection of a limit condition. Set this value to the minimum required to remove noise from the process variable

5. PRODUCT INFORMATION MODE

First select Product information mode from Select mode (refer to section 2). Press to view each parameter. To exit from Product Information mode, hold down and press to return to Select mode. Note: These parameters are all read only.

Parameter Lower

Display

Input type Universal input

Option 1 type (fixed) Latching Limit Relay

Option 2 module type fitted

Option 3 module type fitted

Auxiliary Option A module type fitted

Firmware type Value displayed is firmware type number

Firmware issue Value displayed is firmware issue number

Product Revision Level Value displayed is Product Revision level

Date of manufacture

Serial number 1 First four digits of serial number

Serial number 2 Middle four digits of serial number

Serial number 3 Last four digits of serial number

MmMm

Upper

Display

Description

No option fitted

Relay output

SSR drive output

Triac output

Linear DC voltage / current output

No option fitted

Relay output

SSR drive output

Linear DC voltage / current output

Transmitter power supply

No option fitted

RS485 communications

Digital Input for remote reset

Manufacturing date code (mmyy)

6. ERROR/FAULT INDICATIONS

Parameter Upper

Display

Instrument parameters are in default conditions

Input Over Range

Input Under Range

Input Sensor Break

Option 1 Error

Option 2 Error

Option 3 Error

Option A Error

Option B Error

Normal

Lower

Display

Configuration & Setup required. This screen is

seen at first turn on, or if hardware

configuration has been changed. Press to

enter the Configuration Mode, next press

or to enter the unlock code number,

then press to proceed

Normal

Process variable input > 5% over-range

as above if Display Strategy =

Normal

Process variable input > 5% under-range

as above if Display Strategy =

Normal

Break detected in process variable input

as above if Display Strategy =

Option 1 module fault

Option 2 module fault

Option 3 module fault

Option A module fault

Option B not used on Limit Controllers

this error is shown if any module is fitted

Description

sensor or wiring

7. OPERATOR MODE

This mode is entered at power on, or accessed from Select mode (see section 2).

Note: All Configuration mode and Setup mode parameters must be set as required before starting normal operations. Press to scroll through the parameters.

Upper Display

PV Value

Limit SP Value

Lower

Display Strategy and

Display

Limit SP

Value

(Blank)

or PV Value

When Visible

(initial screen)

= .

(Initial Screen)

Description

PV and Limit Setpoint values

Read only

Limit Setpoint value

Read only

Displays and PV if Limit

Output is active or and blank

if not active.

Read only

Highest PV value since this High Limit Hold

parameter was last reset.

To reset, press for 5 seconds,

display =

when reset

Lowest PV value since this Low Limit Hold

Exceed Time Value

Active Alarm Status

Always available

Format mm.ss to 99.59

then mmm.s

(10 sec increments)

Shows

if 999.9

When one or more alarms are active.

ALM indicator will also flash

parameter was last reset.

To reset, press for 5 seconds,

display =

when reset

Accumulated time of Limit SP

exceed conditions since this

parameter was last reset.

To reset, press for 5 seconds,

display =

when reset

Alarm 2 active

Alarm 1 active

Annunciator active

Exceed Condition

An Exceed Condition is when the Process Variable exceeds the Limit Setpoint value (i.e. PV > SP when set for high limit action, PV < SP for low limit action). The LED is on during this condition, and is extinguished once it has passed.

Limit Output Function

Limit Output relay(s) de-energise whenever an Exceed condition occurs, causing the process to shut down. The LED is on when the relay is de-energised. The relay remains latched off even if the Exceed condition is no longer present. Only giving a reset instruction (after energise the relay, allowi ng the process to continue. The LED then turns off.

Limit Annunciator Outputs

An Annunciator output will activate when an Exceed condition occurs, and will remain active until a reset instruction is received, or the Exceed condition has passed. Unlike the Limit Output, an Annunciator can be reset even if the Exceed condition is present. When an Annunciator is active, the LED will flash and the Alarm Status screen is available.

Resetting Limit Outputs & Annunciators

A reset instruction can be given by pressing the key, via the Digital Input (if fitted) or via a Comms command if an RS485 Communications module is fitted. Annunciators will deactivate. Limit Outputs will only re-energise if the Exceed condition has passed.

CAUTION: Ensure that the cause of the Exceed condition has been

rectified before resetting the Limit Output.

the exceed condition has passed) will re-

8. SERIAL COMMUNICATIONS

Refer to the full user guide (available from your supplier) for details.

9. SPECIFICATIONS

UNIVERSAL INPUT

Thermocouple Calibration:

PT100 Calibration:

DC Calibration:

Sampling Rate: 4 per second.

Impedance:

Sensor Break Detection:

Isolation: Isolated from all outputs (except SSR driver).

DIGITAL INPUT

Volt-free(or TTL): Open(2 to 24VDC) =No Reset.

Isolation: Reinforced safety isolation from inputs and other outputs.

OUTPUTS

Limit Relay

Contact Type & Rating:

Lifetime: >100,000 operations at rated voltage/current.

Isolation: Basic Isolation from universal input and SSR outputs.

Alarm Relays

Contact Type & Rating:

Lifetime: >500,000 operations at rated voltage/current.

Isolation: Basic Isolation from universal input and SSR outputs.

SSR Driver

Drive Capability:

Isolation: Not isolated from universal input or other SSR driver outputs.

Triac

Operating Voltage: 20 to 280Vrms (47 to 63Hz).

Current Rating: 0.01 to 1A (full cycle rms on-state @ 25°C );

Isolation: Reinforced safety isolation from inputs and other outputs.

Resolution: 8 bits in 250mS (10 bits in 1s typical, >10 bits in >1s typical).

Isolation: Reinforced safety isolation from inputs and other outputs.

Transmitter PSU

Power Rating:

Isolation: Reinforced safety isolation from inputs and other outputs.

SERIAL COMMUNICATIONS

Physical: RS485, at 1200, 2400, 4800, 9600 or 19200 bps.

Protocols: Selectable between Modbus and West ASCII.

Isolation: Reinforced safety isolation from all inputs and outputs.

OPERATING CONDITIONS (FOR INDOOR USE)

Ambient Temperature:

Relative Humidity: 20% to 95% non-condensing.

Supply Voltage and Power:

ENVIRONMENTAL

Standards:

EMI:

Safety Considerations:

Front Panel Sealing: To IP66 (IP20 behind the panel).

PHYSICAL

Front Bezel Size: 1/

Depth Behind Panel:

Weight: 0.21kg maximum.

±0.1% of full range, ±1LSD (±1°C for Thermocouple CJC). BS4937, NBS125 & IEC584.

±0.1% of full range, ±1LSD. BS1904 & DIN43760 (0.00385

Ω/Ω

/°C).

±0.1% of full range, ±1LSD.

>10MΩ resistive, except DC mA (5Ω) and V (47kΩ ). Thermocouple, RTD, 4 to 20 mA, 2 to 10V and 1 to 5V ranges

only. Limi t outputs turn off (goes into Exceed condition), high

alarms activate for thermocouple/RTD sensor break, low alarms activate for mA /V DC sensor break.

Universal input must not be connected to operator accessible circuits if relay outputs are connected to a hazardous voltage source. Supplementary insulation or input grounding would then be required.

Closed(<0.8VDC) = Reset (edge triggered).

Latching limit control relay. Single pole double throw (SPDT); 5A resistive at 120/240VAC. Slot 1 position fixed for this function, optional function for Slot 2 & 3 relay modules,

Slot 2 or 3 position non-latching alarm relay. Single pole double throw (SPDT); 2A resistive at 120/240VAC

SSR drive voltage >10V into 500Ω min.

derates linearly above 40°C to 0.5A @ 80°C.

20 to 28V DC (24V nominal) into 910Ω minimum resistance.

0°C to 55°C (Operating), –20°C to 80°C (Storage).

100 to 240VAC ±10%, 50/60Hz, 7.5VA (for mains powered versions), or 20 to 48VAC 50/60Hz 7.5VA or 22 to 65VDC 5W (for low voltage versions).

CE, FM 3545, 1998 Complies with EN61326 (Susceptibility & Emissions). Complies with EN61010-1. Pollution Degree 2, Installation Category II.

Din = 48 x 48mm, 1/8 Din = 96 x 48mm,

/4 Din = 96 x 96mm.

Din = 110mm, , 1/8 & 1/4 Din = 100mm.

™

omega.com [email protected]

Servicing North America:

U.S.A. Omega Engineering, Inc. Headquarters: 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)

e-mail: [email protected]

For Other Locations Visit omega.com/worldwide

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification. The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it

and reserves the right to alter specifications without notice.

contains,

WARNING:

These products are not designed for use in, and should not be used for, human applications.

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 37 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month grace period to the normal three (3) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PAR TICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner.

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number s hould then be marked on the outside of the return package and on any correspondence. The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit.

FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA:

1. Purchase Order number under which the product was PURCHASED,

2. Model and serial number of the product under warranty, and

3. Repair instructions and/or specific problems relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering.

photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC.

Where Do I Find E

WARRANTY/DISCLAIMER

RETURN REQUESTS / INQUIRIES

FOR NON-WARRANTY REPAIRS, current repair charges. Have the following information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the COST of the repair,

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems relative to the product.

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