Omega Products CN3430 Installation Manual

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User’s Guide

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Universal Temperature & Process

CN3430 & CN3440 SERIES

Controllers

Operating Guide

WARRANTY/ DISCLAIMER

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 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 which wear are not warranted, including but not limited tocontact 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 it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 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.

RETURN REQUESTS / INQUIRIES

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 should 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 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.

RETURNS, please have the

FOR NON-WARRANTY REPAIRS, OMEGA for 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.

consult

CONTENTS

Section Page

1 INTRODUCTION .................................. 2

2 SETTING UP ........................................ 3

2.1 Instrument Power-up .................... 3

2.2 Simple Fault-finding ..................... 3

3 DISPLAYS & CONTROLS ................... 4

3.1 Displays and LED Indicators ........ 4

3.2 LED Indication .............................. 4

3.3 Use of Controls ............................ 5

4 GENERAL OPERATION ...................... 6

5 OPERATING LEVEL ............................ 7

5.1 Operating Page Introduction ........ 7

5.1.1 Set Point Tracking ............ 7

5.1.2 Auto/Manual Transfer ....... 7

5.1.3 Heat/Cool Control ............. 7

5.2 Operating Page Displays ............. 8

5.2.1 Time Proportioning

and Analog Control ........... 8

5.2.2 Motorized Valve Control ... 9

5.2.3 Heat/Cool Control ........... 10

5.3 Operating Page Messages ........ 11

5.4 Alarm Acknowledge Page .......... 13

5.4.1 Mode Alarm Trips ........... 13

5.5 Access to Configuration Levels .. 14

5.5.1 Security Code Page ........ 14

6 TUNING LEVEL .................................. 15

6.1 Introduction to Self-tuning .......... 15

6.2 Self-tuning Page ........................ 16

6.3 Self-tune Diagnostic Messages . 20

7 CONTROL LEVEL .............................. 21

7.1 Introduction to Standard Control 21

7.2 Control Page .............................. 23

7.3 Introduction to Heat/Cool

Control ....................................... 25

7.3.1 Control Page

(Heat/Cool Control) ......... 26

7.3.2 Calculating the Crossover

Value .............................. 28

7.3.3 Calculating the Transition

Bandwidth Value ............. 28

8 PROFILE OPERATION ...................... 29

8.1 Profile Operating Page ............... 29

8.2 Profile States Page .................... 30

1 INTRODUCTION

The instrument documentation is shown in Fig. 1.1. The Standard Manuals, including the specification sheet, are supplied with all instruments. The Modbus Supplement is supplied with instruments configured for Modbus Serial Communications.

INSTALLATION

Product Identification

Siting

Mounting

Electrical Connections

Installation Record

OPERATION

Setting Up

Displays & Controls

Operating Level

Simple Fault Finding

Standard Manuals Modbus Supplement

PROGRAMMING

Basic Config. Level

Advanced Config. Level

Fig. 1.1 Documentation

MODBUS (RTU).

Serial Adaptors

Serial Connections

Programming Page

Modbus Registers

2 SETTING UP

2.1 Instrument Power-up – Fig. 2.1

Caution. Ensure that all connections, especially to the earth stud, are made

correctly.

a) Check that the input sensors are installed correctly.

b) Switch on the supply to the instrument, any power-operated control circuits and the input

signals.

c) The start-up sequence shown in Fig. 2.1 is displayed when the supply is first switched on.

2.2 Simple Fault-finding

If the instrument does not appear to be working satisfactorliy, carry out the following checks before contacting the Service Organization:

• Are all connections made correctly?

• Is there power to the instrument?

• Is there a signal at the process variable input and/or the control output terminals?

C300

tESt

Instrument Test identifies the instrument type

– see

100.3

200.5

Normal Display

100.3

200.5

Normal Display

Note. Acknowledging error clears the display but does not rectify the fault. First

check critical parameters. Power down and then power up the instrument. If the fault persists after checking all parameters, contact the Service Organization.

C301

tESt

Table 2.1 in the Installation Guide.

Flashing

between

Configuration Check

indicates configuration error. Acknowledged by pressing the switch.

Flashing

between

Line Failed indicates power has been restored after a failure. Cleared by pressing the switch.

C310

tESt

CONFIG

CHECK

LINE FAILEd

Fig. 2.1 Instrument Displays at Power-up

3 DISPLAYS & CONTROLS

The displays, l.e.d. indicators and operation/programming controls are located on the faceplate on the front of the instrument.

3.1 Displays and LED Indicators – Fig. 3.1

The displays comprise 2 rows of 6 characters.

A B C D E F G H I J K

A b C or c d E F G H or h I J K

Table 3.1 Character Set

L M N O P Q R S T U V Y

L M N or n O or o P Q r S t U V Y

3.2 LED Indication – Fig 3.1

LED indications are as follows:

A1 Alarm states for alarms 'A' to 'E' – see A2 Alarm states for alarms 'F' to 'K' – see

LED Flashing – alarm active but not acknowledged LED On – all active alarms acknowledged

LED Off – alarms inactive L On if the local set point is being used – see R On if the remote set point is being used – see

(Both L and R off if dual set point or dual fixed set points are used – see

Programming Guide).

ST On while the self-tune procedure is being performed (flashes when procedure is

complete) – see Section 6.2. M On when the instrument is in Manual control mode.

Section 4.11 in Programming Guide. Section 4.11 in Programming Guide.

Section 4.2 in Programming Guide.

Section 4.2 in

Bar Graph Display

Displays

LED Indicators

Fig. 3.1 Familiarisation with Controls, Displays and Indicators

'Enter' Switch LED

Controls – Refer to

Figs. 3.2 to 3.6

3.3 Use of Controls – Fig. 3.2 to 3.6

Parameter X

Y Z

Select

3 DISPLAYS & CONTROLS…

Page 1

Frame 1 Frame 2 Frame 3 Frame 4

Fig. 3.2 Advancing to Next Page

Page 2

Frame 1 Frame 2 Frame 3

Parameter Value

Note. Continued pressure on the and switches causes the rate of change of the displayed value to increase. To make small adjustments operate the switches momentarily.

Adjust

Page X

Frame 1

Advance to next Frame

Fig. 3.4 Adjusting a Parameter Value

Frame 2 Frame 3 Frame 4

Fig. 3.3 Moving between Frames

Fig. 3.5 Selecting a Parameter Choice

Used for selecting Automatic or Manual mode on alternate operations. When Manual mode is selected the displays revert automatically to the process variable values and control output or valve position (if position-proportioning or boundless motorized valve control is selected at – See

Section 4.10 in the Programming Guide.

Fig. 3.6 Auto/Manual Switch Functions

Control Type

frame in the

Set Up Control Page

)

4 GENERAL OPERATION

Programming

Pages – See

Programming

Guide.

SELF

tUNE

PrOFLE

StAtES

SECOdE

MMMM

P-StAt

MMMM

ACKNLG

ALArMS

CONtrL

PAGE

000.00

Process Variable

Operating Page

(Section 5.2,

Page 8)

Alarm Acknowledge

Page

(Section 5.4, Page 13)

Security Code Page

(Section 5.5,

Page 14)

Profile Operating Page*

(Section 8.1, Page 29)

Self-tuning Page†

(Section 6.2,

Page 16)

Control Page

(Section 7.2, Page 23)

Profile States Page*

(Section 8.2,

Page 30)

Set

Point

*Page hidden if Profile Function is 'OFF'

†Page hidden if Profile Function is 'ON' or 'Boundless' control is selected

Incorrect Security Code

Correct Security Code

– see

Information. The instrument has dedicated Operating Pages. These pages are used for general monitoring of the process

Section 5.5.

measurements and are not affected by the security system which inhibits access to the programming and control pages only

Fig. 4.1 Summary of Operating Levels

5 OPERATING LEVEL

5.1 Operating Page Introduction

5.1.1 Set Point Tracking

With set point tracking enabled (in the Set Points Page), the Local set point value tracks the process variable when the controller is in Manual control mode. In this mode of operation the set point limits do not apply. If the set point value is outside its limits when Automatic control mode is selected, the local set point remains outside its limits and can only be adjusted in one direction, towards its limits. Once inside the limits they apply as normal.

With remote set point tracking enabled, the Local set point tracks the remote set point value when in the remote set point mode. In this mode of operation the Local set point limits do not apply. If the set point value is outside its limits when the Local set point value is selected, the Local set point remains outside its limits and can only be adjusted in one direction, towards its limits. Once inside the limits they apply as normal.

5.1.2 Auto/Manual Transfer

All auto-to-manual transfers are bumpless. If the Local set point is used and set point tracking is enabled, all manual-to-auto transfers are bumpless, since the set point is always at the same value as the process variable. Without set point tracking enabled, the response following a manual-to-auto transfer depends on the control settings. With an integral action setting the output is ramped up or down to remove any process variable offset from the set point (providing the process variable is within the proportional band). If the integral action is off, the output may step to a new value when the controller is transferred back to Automatic control mode.

With remote set point tracking enabled, the control set point switches automatically from Remote to Local when Manual mode is selected.

5.1.3 Heat/Cool Control – Fig. 6.3

When in Automatic control mode both the heat and cool outputs are turned off when in the Output Off Hysteresis Band. In Manual control mode the Output Off Hysteresis Band has no effect. If the PID output is within the Off Hysteresis Band when the controller is returned to auto control mode, the Off Hysteresis Band has no effect until either the PID output goes outside the band or becomes equal to the Crossover Value.

100.3

110.5

LOCAL

110.5

Fig. 5.1 Set Point Type Selection Facility (see Section 5.2 overleaf)

Control Set Point frame

To adjust Local or Dual Set Point value

LOCAL bALNCE rEMOtE

dUAL

Balance Set Point – shows the difference between the Local and Second Set Point values (remote or dual), i.e.

Balance = Second set point – Local set point

…5 OPERATING LEVEL

5.2 Operating Page Displays

5.2.1 Time Proportioning and Analog Control

Process Variable

100.3

110.5

Control Set Point

The set point in use is displayed (Local, Remote or Dual). If the Local or Dual set point is displayed it can be adjusted using the and switches, providing Set Point Adjust

is set to YES – see

Enable

Guide,

Set Points Page

Section 4.2 of the Programming

LOCAL bALNCE rEMOtE

dUAL

100.3

110.3

100.3 OP 50.0

100.3 r50.0

100.3 dEG F

LOCAL

110.5

rAtIO

1.000

bIAS

0.0

Control Output Value (0 to 100%). To adjust the output value manually: select Manual control mode using the switch ('M' l.e.d. is illuminated) and then use the and switches to set the required value

Manual Reset (0 to 100%). This frame is not displayed if an Integral Action Time is set or Manual Reset Adjust Enable is set to OFF – see Section

7.2, Control Page.

Use the and switches to set a value which eliminates any offset from the set point.

Temperature Units

This frame is not displayed if the Display Units parameter is set to NONE – see

Set Up Display Page

Set Point Type Selection – Fig. 5.1 (previous page)

Use the switch to view the various set point values. If the difference is too great, press the switch and return to the

Control Set Point frame and adjust the Local set point to obtain

an acceptable difference. The Local set point tracks the Remote set point when the Remote set point is selected, providing Remote Set Point Tracking Enable is set to YES – see

Section 4.2 of the Programming Guide,

Remote Set Point Ratio

The remote set point input (in engineering units) is multiplied by the ratio to obtain the control set point value, i.e.

Remote Set Point Value = Input x Ratio + Bias Use the and the switches to set the ratio required, between 0.010 and 9.999 in 0.001 increments

Remote Set Point Bias

The bias value is added to the remote set point value (see previous frame) Use the and the switches to set the bias required. The bias can be set to either a positive or negative value (in engineering units).

Section 4.8 of the Programming Guide

Set Points Page

5.2.2 Motorized Valve Control

Process Variable

100.3

110.5

5 OPERATING LEVEL…

Control Set Point

The set point in use is displayed (Local, Remote or Dual). If the Local or Dual set point is displayed it can be adjusted using the and switches, providing Set Point Adjust

Enable is set to YES – see

Guide,

Set Points Page

Section 4.2 of the Programming

O W C

100.3 W 50.0

Open

Stop

Motorized Valve

(position-proportioning

and boundless)

100.3 r500

100.3 dEG F

LOCAL

LOCAL bALNCE rEMOtE

dUAL

110.5

rAtIO

1.000

Valve Status and Valve Position (%)

W – valve stopped O – valve opening C – valve closing

The valve position is displayed as a percentage of its full travel position (not displayed on boundless controllers with position indication disabled). To adjust the valve position manually: select Manual control mode using the switch ('M' l.e.d. is illuminated) and then use the and switches to set valve position required (the switch opens the valve and the switch closes the valve). With neither switch pressed the valve is stopped.

Manual Reset (0 to 100%). This frame is not displayed if an Integral Action Time is set or Manual Reset Adjust Enable is set to OFF – see Section

7.2, Control Page.

Use the and switches to set a value which eliminates any offset from the set point.

Temperature Units

This frame is not displayed if the Display Units parameter is set to NONE – see

Set Up Display Page

Set Point Type Selection – Fig. 5.1 (previous page)

Use the switch to view the various set point values. If the difference is too great, press the switch and return to the

Control Set Point frame and adjust the Local set point to obtain

an acceptable difference. The Local set point tracks the Remote set point when the Remote set point is selected, providing Remote Set Point Tracking Enable is set to YES – see

Section 4.2 of the Programming Guide,

For Remote Set Point Ratio and Remote Set Point Bias settings, refer to opposite page.

Section 4.8 of the Programming Guide

Set Points Page

bIAS

0.0

+ 25 hidden pages