Watlow SERIES 922 User's Manual

Using This Retrofit Guide

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Specification sheets on Watlow product may be obtained at

http://www.watlow.com/literature/specsheets/

User Manuals on Watlow product may be obtained at

http://www.watlow.com/literature/prodtechinfo/

Additional information on other Watlow products may be obtained by visiting

http://www.watlow.com/

To locate a controller, search on the part number such as 965A-1CD0-00RG. Use the Help feature in Adobe Reader on how to search documents.

If there are multiple listings, then the retrofit is conditional upon field use. Select the appropriate selection. The User’s

Manual is included at the bottom of this document when available.

Before selecting a replacement controller:

1. Know the application.

• Temperature range

• Sensor type

• Is the sensor upgradable if required?

• Additional input requirements – remote set points, secondary sensor or events

• Output required – control, alarm, event

• Is the power-switching device upgradable?

• Operating voltage of controller

• Mounting requirements – panel space

• Is a safety limit device required?

2. Know the product.

• Inputs – type and number of

• Control function – direct (cool) or reverse (heat)

• Outputs – switched DC, SSR, or mechanical relay

• Communication requirements

• Which control features are required? (cascade, slidewire, differential, remote control, other)

3. Use your best judgment for selecting a replacement controller. All applications require close examination of input, output and the control mode needs to have the controller function properly.

4. Safety: Remember to make sure all redundant safety equipment is in place and working when retrofitting equipment.

If a system has been retrofitted without the proper safety equipment, you could be liable if an accident occurs.

This is only a guide to replacement controllers. If you have doubts, please call (507) 454-5300 and ask for technical support or email [email protected]. We’re here to help. The suggested replacement will differ in fit and form. Please review the replacement controller specifications for suitability. Carefully check the notes for additional information that may apply.

Your comments or suggestions on the Retrofit Guide are welcome. Please send comments or corrections to: Technical

Writer, Watlow Controls, 1241 Bundy Boulevard, P.O. Box 5580, Winona, MN 55987-5580; phone (507) 454-5300; fax

(507) 452-4507.

This Retrofit Guide is copyrighted by Watlow Winona, Inc., © February 2004 with all rights reserved. (1455)

Abbreviation & Terminology

(as used in this document)

0.5 – 0.5 amperes of current switching capability

2A – 2 amperes of current switching capability

5A - 5 amperes of current switching capability

10A – 10 amperes of current switching capability

15A – 15 amperes of current switching capability

12-24 – Supply voltage can be between 12 to 24 Volts

100-240 – Supply voltage can be between 100 to 240 Volts

100 ohm DIN – refers to 100-ohm platinum RTD that has a DIN curve.

100 ohm JIS – refers to 100-ohm platinum RTD that has a JIS curve.

1/32 DIN – Deutsche Industrial Norm standard for panel mounted controller, hole size is cut to 1.78”w x 0.88”h.

1/16 DIN – Deutsche Industrial Norm standard for panel mounted controller, hole size is cut to 1.78”w x 1.77”h.

1/8V DIN – Deutsche Industrial Norm standard for panel mounted controller, hole size is cut to 1.78”w x 3.63”h.

1/8H DIN – Deutsche Industrial Norm standard for panel mounted controller, hole size is cut to 3.63”w x 1.77”h”

1/8S DIN – Deutsche Industrial Norm standard for panel mounted controller, hole size is cut to 2.68”w x 2.68”h.

¼ DIN – Deutsche Industrial Norm standard for panel mounted controller, hole size is cut to 3.63”w x 3.63”h.

Action – determines the direction of control. Heat (reverse acting) or Cool (direct acting).

Auto Reset – the limit will automatically reset on a power cycle but requires manual reset on limit trip.

Cascade – a control algorithm in which the output of one control loop provides a set point for another loop. The second loop, in turn, determines the control action.

Ch – Channel refers to an analog input. There are single and dual channel controllers.

Control Mode – the method that a controller uses to switch the outputs such as PID, ON/OFF, and Manual.

Differential - control algorithm in which the output is based on the difference of the inputs plus set point.

DIN – Deutsche Industrial Norm, a set of technical, scientific and dimensional standards developed in Germany. RTD sensors with the DIN curve change resistance at a rate of 0.00385 ohms/ohms/C.

DIN Rail – standard DIN EN50022 mounting method for attaching devices onto a metal rail.

Fixed – refers to a set point that is fixed at one value.

High Limit - device will deactivate output on a temperature rise above set point.

Inductive Load – any device that has a wire winding such as solenoids, electromechanical relays or transformers.

Input – refers to the sensor types that may be connected.

Integral – the set point in integral (on board) to the controller.

JIS – Joint Industrial Standards, a set of technical, scientific and dimensional standards developed in Japan. RTD sensors with the JIS curve change resistance at a rate of 0.00396 ohms/ohms/C.

Line Voltage – the voltage required powering the electronics of the controller.

Low Limit - device will deactivate output on a temperature drop below set point.

On/Off – a method of control that turns the output full on until set point is reached and then off until the process error exceeds the hysteresis.

Open Brd – the form factor of this controller is an open circuit board mounted on four standoffs.

Manual Reset – the limit must be reset on a power cycle and requires manual reset on limit trip.

Multi RSP – multiple remote set potentiometers were supported. Each allowed the set point to be selected and adjusted.

Relay – refers to an electromechanical relay.

Remote – set point is adjusted using a remote potentiometer.

Panel – the form factor of this controller is mounted through a hole cut in the panel.

PI – Proportional and Integral, a control mode with two functions: proportional action dampens the systems response, and integral corrects for droop.

PID – Proportional, Integral, and Derivative, a control mode with three functions: proportional action dampens the systems response, integral corrects for droop, and derivative prevents overshoot and undershoot.

Potted – the circuit board and electronics are encased in epoxy.

Proc – Process input may accept 0-5, 1-5, 0-10 volts or 0-20 and 4-20 mA.

Profiling – Controller will perform a sequence of programmed steps.

Programmable – The feature is changeable in the field through jumpers and/or parameter selection.

RTD – Resistance Temperature Detector, a sensor that is 100 ohms at 0 degrees C and made of platinum material.

SSR – Solid State Relay, these devices will switch AC voltage only and require a load to latch on.

Sw DC – Switched DC, a time proportioning DC output used to drive DC input solid state relays.

t/c – Thermocouple sensor device made by joining two dissimilar metals whose standards is identified by a letter.

Temp Range – the range over which the controller could have the set point adjustment.

Thermistor – a sensor that changes resistance as the temperature changes. Similar but not the same as an RTD.

Universal – Input can be a thermocouple, 100 ohm DIN RTD or process (volts or milliamperes)

VAC – Volts Alternating Current

VAC/DC- Volts Alternating Current or Direct Current

VDC – Volts Direct Current

VTB Sw DC – Variable Time Base Switched Direct Current, a time proportioning DC output where the cycle time is variable.

These notes are used to signify areas of concern in changing to a retrofit choice. These notes are also printed at the end of the retrofit listing.

Note 1: Retrofit controller requires a substitution of a 100 Ohm RTD sensor for the thermistor.

Note 2: Mounting and dimensions of retrofit controller are different. Verify that sufficient panel space and depth is available.

Note 3: Retrofit controller outputs are different. Add external interposing mechanical or solid state relay if applicable.

Note 4: Retrofit controller has a programmable, not fixed set point. Lock set point using controller's lockout parameter.

Note 5: For DIN rail mounting or sub-panel mounting, purchase DIN rail adapter p/n 0822-0586-P001 for 1/32 DIN or p/n 0822-0586-P002 for 1/16 DIN.

Note 6: Add a suppressor, Watlow p/n 0804-0147-0000, for inductive loads.

Note 7: Retrofit does not have equivalent action (as example, no manual reset)

Note 8: Retrofit controller does not have dual dial scale.

Note 9: Hardware lockout is not available on retrofit.

Note 10: Retrofit controller does not have user selectable line voltage.

Note 11: Retrofit does not support remote set point or retransmit. Check if pins 13, 14, 15 or 16 have termination. If wires are on these pins, select a different retrofit.

Note 12: Retrofit controller does not have user selectable control action.

Note 13: Solid state sensor required for humidity. See

http://www.vaisala.com

Note 14: Retrofit controller does not have user selectable control mode.

Note 15: Use auxiliary event board A007-1732-F4B8

Note 16: Retrofit communications are different, consult specifications.

Note 17: Verify retrofit input range matches application.

Series 922

922A-1BB0-A000

922A-1BB0-B000

922A-1BB0-C000

922A-1CC0-A000

922A-1CC0-B000

922A-1CC0-C000

922A-1FB0-A000

922A-1FB0-B000

922A-1FB0-C000

922A-2BB0-A000

922A-2BB0-B000

922A-2BB0-C000

922A-2CC0-A000

922A-2CC0-B000

922A-2CC0-C000

922A-2FB0-A000

922A-2FB0-B000

922A-2FB0-C000

922A-3BB0-A000

922A-3BB0-B000

922A-3BB0-C000

922A-3CC0-A000

922A-3CC0-B000

922A-3CC0-C000

922A-3FB0-A000

922A-3FB0-B000

922A-3FB0-C000

922A-4BB0-A000

922A-4BB0-B000

922A-4BB0-C000

922A-4CC0-A000

922A-4CC0-B000

922A-4CC0-C000

922A-4FB0-A000

922A-4FB0-B000

922A-4FB0-C000

922A-5BB0-A000

922A-5BB0-B000

922A-5BB0-C000

922A-5CC0-A000

922A-5CC0-B000

Watlow Controls

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

Line Voltage

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

RTD/Proc

RTD/Proc

RTD/Proc

RTD/Proc

T t/c/Proc

T t/c/Proc

T t/c/Proc

T t/c/Proc

T t/c/Proc

T t/c/Proc

T t/c/Proc

T t/c/Proc

T t/c/Proc

Proc/Proc

Proc/Proc

Proc/Proc

Proc/Proc

Proc/Proc

Proc/Proc

Proc/Proc

Proc/Proc

Proc/Proc

T t/c/T t/c

T t/c/T t/c

T t/c/T t/c

T t/c/T t/c

T t/c/T t/c

Input

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/Proc

RTD/Proc

RTD/Proc

RTD/Proc

RTD/Proc

Series 922

Control Mode Action Output Set Point Mounting

Progammable Progammable Dual 0.5A SSR/0.5A SSR Profiling 1/4 DIN

Retrofit

F4DH-KKKK-01RG

Progammable Progammable Dual 0.5A SSR/0.5A SSR Profiling


1/4 DIN

1/4 DIN

F4DH-KKKK-01RG

F4DH-KKKK-01RG

Progammable Progammable




Dual Sw dc/Sw dc

Dual Sw dc/Sw dc

Dual Sw dc/Sw dc

Dual 4-20MA/0.5A SSR

Profiling

Profiling

Profiling

Profiling

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-FKFK-01RG





Profiling

Profiling




Progammable Progammable Dual Sw dc/Sw dc Profiling


1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG





Dual Sw dc/Sw dc




Profiling

Profiling

Profiling

Profiling










Dual Sw dc/Sw dc

Dual Sw dc/Sw dc




Profiling

Profiling

Profiling

Profiling

Profiling









Dual Sw dc/Sw dc

Dual Sw dc/Sw dc



Profiling

Profiling

Profiling

Profiling

Progammable Progammable Dual 4-20MA/0.5A SSR Profiling






Dual Sw dc/Sw dc

Dual Sw dc/Sw dc

Profiling

Profiling

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-CCCC-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

1/4 DIN F4DH-KKKK-01RG



1/4 DIN F4DH-CCCC-01RG

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

7/19/2004

See Notes

Below

6

6, 16

6, 16

16

16

6

6, 16

6, 16

6

6, 16

6, 16

16

16

6

6, 16

6, 16

6

6, 16

6, 16

16

16

6

6, 16

6, 16

6

6, 16

6, 16

16

16

6

6, 16

6, 16

6

6, 16

6, 16

16

Page 1

Series 922

922A-5CC0-C000

922A-5FB0-A000

922A-5FB0-B000

922A-5FB0-C000

922A-6BB0-A000

922A-6BB0-B000

922A-6BB0-C000

922A-6CC0-A000

922A-6CC0-B000

922A-6CC0-C000

922A-6FB0-A000

922A-6FB0-B000

922A-6FB0-C000

922A-7BB0-A000

922A-7BB0-B000

922A-7BB0-C000

922A-7CC0-A000

922A-7CC0-B000

922A-7CC0-C000

922A-7FB0-A000

922A-7FB0-B000

922A-7FB0-C000

922A-8BB0-A000

922A-8BB0-B000

922A-8BB0-C000

922A-8CC0-A000

922A-8CC0-B000

922A-8CC0-C000

922A-8FB0-A000

922A-8FB0-B000

922A-8FB0-C000

922A-9BB0-A000

922A-9BB0-B000

922A-9BB0-C000

922A-9CC0-A000

922A-9CC0-B000

922A-9CC0-C000

922A-9FB0-A000

922A-9FB0-B000

922A-9FB0-C000

922A-ABB0-A000

Watlow Controls

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

Line Voltage

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

RTD/Proc

RTD/Proc

RTD/Proc

RTD/Proc

RTD/Proc

RTD/Proc

RTD/Proc

RTD/Proc

K t/c/K t/c

K t/c/K t/c

K t/c/K t/c

K t/c/K t/c

K t/c/K t/c

K t/c/K t/c

K t/c/K t/c

K t/c/K t/c

K t/c/K t/c

J t/c/J t/c

J t/c/J t/c

J t/c/J t/c

J t/c/J t/c

J t/c/J t/c

J t/c/J t/c

J t/c/J t/c

J t/c/J t/c

J t/c/J t/c

J t/c/Proc

Input

T t/c/T t/c

T t/c/T t/c

T t/c/T t/c

T t/c/T t/c

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/RTD

RTD/Proc

Series 922

Control Mode Action




Output

Dual Sw dc/Sw dc



Set Point Mounting

Profiling 1/4 DIN

Retrofit

F4DH-CCCC-01RG

Profiling

Profiling

1/4 DIN

1/4 DIN

F4DH-FKFK-01RG

F4DH-FKFK-01RG





1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-FKFK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG





Dual Sw dc/Sw dc

Dual Sw dc/Sw dc

Dual Sw dc/Sw dc


Profiling

Profiling

Profiling

Profiling





Profiling

Profiling


1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-KKKK-01RG





Dual Sw dc/Sw dc

Dual Sw dc/Sw dc

Profiling

Profiling





Dual Sw dc/Sw dc




Profiling

Profiling

Profiling

Profiling










Dual Sw dc/Sw dc




Profiling

Profiling

Profiling

Profiling









Dual Sw dc/Sw dc

Dual Sw dc/Sw dc



Profiling

Profiling

Profiling

Profiling



1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

1/4 DIN F4DH-CCCC-01RG

1/4 DIN F4DH-FKFK-01RG



1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-KKKK-01RG

7/19/2004

16

16

6

6, 16

6, 16

6

16

16

6

6, 16

6, 16

6

6, 16

6, 16

16

16

6

6, 16

6, 16

6

6, 16

6, 16

16

16

6

6, 16

6, 16

6

6, 16

6, 16

See Notes

Below

16

6

6, 16

6, 16

6

6, 16

6, 16

Page 2

Series 922

922A-ABB0-B000

922A-ABB0-C000

922A-ACC0-A000

922A-ACC0-B000

922A-ACC0-C000

922A-AFB0-A000

922A-AFB0-B000

922A-AFB0-C000

922A-BBB0-A000

922A-BBB0-B000

922A-BBB0-C000

922A-BCC0-A000

922A-BCC0-B000

922A-BCC0-C000

922A-BFB0-A000

922A-BFB0-B000

922A-BFB0-C000

Line Voltage

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

Input

J t/c/Proc

J t/c/Proc

J t/c/Proc

J t/c/Proc

J t/c/Proc

J t/c/Proc

J t/c/Proc

J t/c/Proc

K t/c/Proc

K t/c/Proc

K t/c/Proc

K t/c/Proc

K t/c/Proc

K t/c/Proc

K t/c/Proc

K t/c/Proc

K t/c/Proc

Series 922

Control Mode Action Output Set Point Mounting

Progammable Progammable Dual 0.5A SSR/0.5A SSR Profiling 1/4 DIN

Retrofit

F4DH-KKKK-01RG



1/4 DIN

1/4 DIN

F4DH-KKKK-01RG

F4DH-CCCC-01RG





Dual Sw dc/Sw dc

Dual Sw dc/Sw dc



Profiling

Profiling

Profiling

Profiling

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG








Dual Sw dc/Sw dc

Dual Sw dc/Sw dc

Dual Sw dc/Sw dc

Profiling

Profiling

Profiling







Profiling

Profiling

Profiling

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

1/4 DIN

F4DH-FKFK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-KKKK-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-CCCC-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

F4DH-FKFK-01RG

Event Board

A007-1732-18B2

A007-1732-18B8

A007-1732-18C2

A007-1732-18C8

A007-1732-18K2

A007-1732-18K8

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

115/230 VAC

Dual 0.5A SSR

Eight 0.5A SSR

Dual Sw dc

Eight Sw dc

Dual 0.5A SSR

Eight 0.5A SSR

Open Bd A007-1732-F4B2

Open Bd A007-1732-F4B8

Open Bd A007-1732-F4C2

Open Bd A007-1732-F4C8

Open Bd A007-1732-F4K2

Open Bd A007-1732-F4K8

Note 1: Retrofit controller requires a substitution of a 100 Ohm DIN RTD sensor.

Note 2: Mounting and dimensions of retrofit controller are different. Verify that sufficient panel space and depth is available.

Note 3: Retrofit controller outputs are different. Add external interposing mechanical or solid state relay if applicable.

Note 4: Retrofit controller has a programmable, not fixed set point. Lock set point using controller's lockout parameter.

Note 5: For DIN rail mounting or sub-panel mounting, purchase DIN rail adapter p/n 0822-0586-P001 for 1/32 DIN or p/n 0822-0586-P002 for 1/16 DIN.

Note 6: Add a quencharc suppressor, Watlow p/n 0804-0147-0000, for inductive loads.

Note 7: Retrofit does not have equivalent action (as example, no manual reset)

Note 8: Retrofit controller does not have dual dial scale.

Note 9: Hardware lockout is not available on retrofit.

Note 10: Retrofit controller does not have user selectable line voltage.

Note 11: Retrofit does not support remote set point or retransmit. If wires are on these pins, select a different retrofit.

Note 12: Retrofit controller does not have user selectable control action.

Note 13: Solid state sensor required for humidity. See http://www.vaisala.com

Note 14: Retrofit controller does not have user selectable control mode.

Note 15: Use auxiliay event board A007-1732-F4B8

Note 16: Retrofit communications are different, consult specifications.

Note 17: Verify retrofit input range matches application.

Watlow Controls 7/19/2004

See Notes

Below

6, 16

6, 16

16

16

6

6, 16

6, 16

6

6, 16

6, 16

16

16

6

6, 16

6, 16

Page 3

Series 922

User's Manual

Microprocessor-Based

Ramping Control

Watlow Controls

Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580, Phone: 507/454-5300, Fax: 507/452-4507

W922-XUMN Rev C00

April 1996

Supersedes:

W922-MA50-9246

$10.00

Made in the U.S.A.

Printed on Recycled Paper

Use The Manual

First…

This manual will make your job easier. Reading it and applying the information is a good way to become familiar with the Series 922. Here's an overview:

Starting Out

Introduction, Chapter 1.

Front Panel

Keys and Displays, Chapter 2.

Running a Program

Sample Program, Chapter 3.

Install/Wire

Installation and Wiring, Chapter 4.

Tune

How to Tune, Chapter 5.

Programming

How to Program, Chapter 6.

Alarms

How to Use Alarms, Chapter 7.

Appendix

Specifications

Glossary

Calibration

Warranty

Series 922 error codes and prompts, see Pages 87 - 89.

2

Notes, Cautions, and Warnings

We use note, caution, and warning symbols throughout this book to draw your attention to important operational and safety information.

A bold text "NOTE" marks a short message in the margin to alert you to an important detail.

A bold text "CAUTION" safety alert appears with information that is important for protecting your equipment and performance. Be especially careful to read and

follow all cautions that apply to your application.

A bold text "WARNING" safety alert appears with information that is important for protecting you, others, and equipment from damage. Pay very close

attention to all warnings that apply to your application.

The symbol (exclamation point in a triangle) precedes a general CAUTION or

WARNING statement.

The

S ymbol (a lighting bolt with an arrowhead in a triangle) precedes an electric shock hazard CAUTION or WARNING safety statement.

Comments and Suggestions

Y our comments or suggestions on this manual are welcome, please send them to: Technical Writer, Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580,

Winona, MN 55987-5580, or phone 507/454-5300. The Watlow Series 922

User's Manual and integral software are copyrighted by Watlow Winona, Inc., ©

1988 with all rights reserved.

WATLOW Series 922 User's Manual

Table of Contents

Page Item

29

29

32

33

35

24

26

26

28

23

24

24

24

21

21

22

23

16

17

17

18

14

14

15

15

18

19

20

9

9

10

11

8

8

7

7

12

12

13

13

Starting out with the Watlow Series 922 - Chapter 1

"Read Me First"

Packing List

Put Your Control to Work —Three Steps

How to Open the 922

How to Set the DIP Switches

Changing the Position of a DIP Switch

Overview of the Three Operating Modes

How to Use the Keys and Displays - Chapter 2

Front Panel Information

Actual and Alphanumeric Display Area

Keyboard Area

Learning the Series 922 - Chapter 3

A Brief Overview

Enter Real Time

Before Entering Your Program

Programming File 1

Running Your Program

Editing Your Program

Adding an AUTOSTART Step Type

LINKing Files

The WAITFOR Step

Running Your Series 922

How to Install and Wire the Series 922 - Chapter 4

Sensor Installation Guidelines

Input Power Wiring

Definitions

The Dos and Don'ts of Clean Input Power

How to Check for Ground Loops

How to Eliminate Noise

Noise Suppression Devices Available from Watlow

Line Filtering Configurations For Controls

Installation Information

Installation Procedure

Series 922 Power Wiring

How to Wire the Series 922

Input Wiring

Output Wiring

Event Output Board

System Wiring Example

Contents

Contents

Starting Out

Front Panel

Sample Program

Install and Wire


3

Contents

Tuning

Programming

Alarms

Appendix

Terminology

Quick Reference

38

39

39

40

38

38

38

38

41

42

42

45

57

65

65

66

67

67

63

63

63

64

85

85

86

86

87

88

73

75

76

83

68

68

70

71

Page Item

36

36

36

37

How to Tune the Series 922 - Chapter 5

Recommended Tuning Reference

Using a Chart Recorder

Tuning

How to Program the Series 922 - Chapter 6

Write Out Your Program

Select the Proper DIP Switch Settings

Event Input

Remote Hold Input

Event Outputs

Guaranteed Soak

The Four JUMPLOOP Types

JUMPLOOP Rules to Follow

Programming in General

SYSTEM Menu

SETUP Menu

PROGRAM Menu

How to Use the Series 922 Alarms - Chapter 7

Alarm Relay Configuration

Number of Alarms

Alarm Types

The Operating Band

Alarm Limits

Alarm Function, Latching or Non-Latching

Clearing an Alarm Message

An Alarm And The State Of The Alarm Relay

Appendix

Specifications

Model Number Information

Thermocouple Field Calibration Procedure

RTD Field Calibration Procedure

Process Field Calibration Procedure

Glossary

Index

Warranty

Returning Merchandise

Shipping Claims

Watlow Controls

Series 922 Error Codes/Alarms

Series 922 Quick Reference

4


Contents

Figures

66

71

73

75

Page Item

34

35

39

42

33

33

33

34

45

57

64

64

65

31

32

32

32

29

30

30

31

27

27

27

28

25

25

25

26

12

13

13

20

7

9

10

11

Series 922 Input and Output Overview

How to Open the Series 922

DIP Switch Location and Orientation

Overview of the Series 922

Series 922 Front Panel Information

Actual and Alphanumeric Display Front Panel Information

Keyboard Front Panel Information

RUN Key Flow Diagram

Differential Mode Filter Diagram

Common Mode Filter

Combination Differential- Common Mode Filter Diagram

Series 922 Faceplate Dimensions

Series 922 Dimensions (Side View)

External Event/Alarm Board Dimensions (Side & End view)

Series 922 Panel Cutout Dimensions

Series 922 Power Wiring Diagram

Input Option "1" & "6", Dual RTD, Wiring Diagram

Input Option "2" & "7", RTD/Process, Wiring Diagram

Input Option "3", T/C and Process, Wiring Diagram

Input Option "4" Dual Process, Wiring Diagram

Input Option "5", Dual T/C, Wiring Diagram

Dual S.S. Relay Output, Option "BB", Wiring Diagram

Solid State Switch, Option "CC", Wiring Diagram

4-20mA/Solid State Output, Option "FB", Wiring Diagram

External Event/Alarm Board Information

External Board Control Power

Ribbon Cable Connector to Series 922

Event Output Option "B" and "K" SSR Wiring Diagram

Event Output Option "C" Switched DC Wiring Diagram

Series 922 System Wiring Example

Guaranteed Soak (GS) Example

SYSTEM Key Flow

SETUP Key Flow

PROGRAM Key Flow

Alarm Type for Alarm 1 is "Process" Alarm (ALTYP1 = P)

Alarm Type for Alarm 1 is a "Deviation" Alarm (ALTYP1=D)

Alarm Limits for alarms 1 and 2 with "Process" Type Alarm

(ALTYP1 = P, ALTYP2 = P)

Alarm Limits for Alarms 1 and 2 with "Deviation" Type Alarm

(ALTYP = D, ALTYP = D)

Reference Compensator-to-Series 922 Connector Diagram

Decade Resistance Box-to-Series 922 Connection Diagram

Voltage/Current Source to Series 922 Connection Diagram

Figures

Figure 17

Figure 18

Figure 19

Figure 20

Figure 21

Figure 22

Figure 23

Figure 24

Figure 25

Figure 26

Figure 27

Figure 28a

Figure 28b

Figure 29

Figure 30

Figure 31

Figure 32

Figure 33

Figure 34

Figure 35

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 36

Figure 37

Figure 38

Figure 39

Figure 40

Contents


5

Contents

Tables

Page Item

18

19

24

43

10

16

17

18

46

58

74

DIP Switch Selection

Series 922 Ramp and Soak Program

Editing Your Program, Steps 4-7

Adding the AUTOSTART Step

LINKing to Another File

The WAITFOR Step

Noise Suppression Device Ratings

SYSTEM Prompts and Description

SETUP Prompts and Description

PROGRAM Prompts and Description

RTD Parameter Settings

Chart

Page Item

62 Master Step Chart

Table

Table 1

Table 2

Table 3

Table 4

Table 5

Table 6

Table 7

Table 8

Table 9

Table 10

Table 11

Chart

Chart 1

6


Contents

Chapter 1

Starting out with the

Watlow Series 922,

A 2-Channel Ramping Control

Dual Inputs:

RTD, T/C or

Process Value

Event Input

Remote Hold Input

Starting Out

Dual PID or ON/OFF

Outputs/Channel

RS-422A or RS-423A (RS-232C Compatible)

Optional Computer Interface

8 Auxiliary

Outputs or

2 Auxiliary

Outputs

"Read Me First."

Figure 1 -

Series 922 Input and

Output Overview

Congratulations, you're about to become a fully-qualified user of the Watlow

Series 922! This versatile microprocessor-based ramping control is powerful, yet simple to learn. A ramp progresses from one set point to another set point over a period of time. In this chapter of the user's manual, you'll get an overview of the 922 and its operation.

Figure 1 is a simplified view of the Series 922's capabilities. It is a 2-channel, dual output per channel, microprocessor-based, 1/4 DIN-sized ramping temperature control. The 922 accepts dual inputs, one per channel. This includes Type J, K or T thermocouple, a 1° or 0.1° RTD input, or one of two process inputs. You can order an external event output board with two or eight auxiliary outputs. It has a full control temperature range, offset calibration, and a front panel lockout feature.

Starting Out, Chapter 1 WATLOW Series 922 User's Manual

7

Starting Out

The Series 922 is a dual channel PID controller. You may input individual sets of

PID parameters for each output. This includes rate, reset, proportional band and cycle time. By setting the proportional band(s) to zero, the Series 922 becomes a simple ON/OFF control, with a 3°F or 1.7°C switching differential.

Two of the Series 922's auxiliary outputs may be alarms or events. An event is an ON/OFF auxiliary output relay signal. You can use events, based on time, to trigger peripheral equipment or processes. Depending on your individual system needs, you may order an external event board with two or eight outputs.

Operator-friendly features include automatic entry codes or "prompts" to aid in setup. When there's a power outage, the Watlow Series 922 stores all information in a nonvolatile memory.

When you first apply power, the unit will "come up" with default values for set points and control parameters. These default values provide minimum operating information for the control until you program in the desired data. The default values are listed in the Master Step Menus and Charts, pp. 46-61.

Remove the Series 922 carefully from its shipping container. Be sure to set this literature aside where it will not be discarded.

Packing List

Included with your Watlow Series 922 are two mounting brackets with integral screws, and this manual.

Put Your Control to Work—Three Steps

Once your control is installed and wired, getting the Series 922 "up and running" is a three-part process:

• First, match the control's "personality," to your system in what we call the

SETUP menu; that is input type, units of measure, range, calibration offset, output action, alarm type, lockout.

• Second, tune the control, making final PID entries.

• Third, enter up to ten separate profiles in the PROGRAM menu.

8


Starting Out, Chapter 1

Opening

How to Open the 922

Before going further, open the Series 922 and pull the control chassis from its case. Here's how:

The control chassis fastens to the case with a single screw located on the lower front panel. See Figure 2. Turn the screw counterclockwise to loosen it. Three or four strip connector plugs, in the rear of the control chassis, feed power and signals through the back of the casing to the triple terminal strip. These plugs will let go as you pull.

ç

When removing the Series 922 Control from its case, pull firmly but gently. When returning the control to the case, be sure you have the top up to match the plugs with the case. The 922 will not fit in to the case upside down. Always check to see that it is oriented correctly. Press the unit in firmly, then turn the front panel screw clockwise to secure it.

ç

CAUTION:

The front panel screw turns 90

°

only. Do not apply excessive force or turn the screw more than 90

°

.

Place picture here.

Place picture here.

Figure 2 -

How to Open the

Series 922.

How to Set the DIP Switches

The Watlow Series 922 has a set of Dual In-line Package (DIP) switches inside the control on circuit board A007-1727. The locations of the board and switches appear in Figure 3. The switches are clearly numbered from left to right. You will use DIP Switches #1-4 and #6; #5 is not used. Table 1 on the next page shows the DIP switch selections.


9

DIP Switches

A007- 1727

Board

Figure 3 -

DIP Switch Location and Orientation.

DIP

Switches

Control Chassis - Top View

Table 1 -

DIP Switch Selection.

WARNING:

Doing a cold start will cause all SETUP parameters and files to be lost. DO NOT put DIP switch #1 in the ON position unless all userprogrammed information is to be cleared.

SPCLFUNC parameters define the personality of your

Series 922. Such as input type, units of measure, range, calibration offset, output action, alarm type, and lock out.

5

6

3

4

1

2

DIP

SW#

Function

ON OFF

Cold Start Warm Start

Display the factory selected Display all SPCLFUNC

SPCLFUNC parameters

Tenths of units displayed parameters

No decimal displayed

0-5VDC/0-20mA input

Not Used

Factory Test/Calibrate

1-5VDC/4-20mA input

Not Used

Normal Operation

Normal

Operating

Position

OFF

Choose

Choose

Choose

OFF

OFF

DIP Switch #1 determines a warm or cold start. A "warm" start will save all programmed information in the 922's memory backup. A "cold" start is a "clean" startup condition; all user-programmed information is deleted. Your Series 922 leaves the factory programmed for a warm start. DIP Switch #2 selects whether all SPCLFUNC parameters will be displayed or not. DIP Switch #3 determines whether the decimal point will be displayed in tenths of units for 0-5V or 4-20mA input and DIP Switch #4 is for 0-5VDC/0-20mA input or 1-5VDC/4-20mA input selection. DIP Switch #5 is not used, and DIP Switch #6 is a factory test/calibrate switch.

Changing the Position of a Switch

Whenever you change the position of a DIP switch, follow this procedure:

1.

Remove power from the Series 922. Turn the front panel screw 90° counterclockwise.

2.

Grip the front panel bezel and pull it straight out from the control case. The control chassis will come out of the case as you pull the bezel.

3.

Set the DIP switch to the position you want.

4.

Return the control chassis to the case. Be sure you have it oriented correctly. It will not fit in upside down, but check just the same. Press firmly, but gently, to seat the chassis.

10


Starting Out, Chapter 1

922 Overview

Overview of the Three Operating Modes

Before getting into the details of the Series 922's keys and displays, take a look at Figure 5 showing the three different modes. After you feel comfortable with the names of the modes and their functions, go ahead to learn the keys and displays.

Control

Series 922: Three Mode Types

Outputs

Manually

Enter

Program

Steps & View

Program

Set Up

Your

System

SYSTEM

PROGRAM

SETUP

SYSTEM Mode

Generates a nonramping set point for Channel 1 and 2

(fixed), and can manipulate events, clear alarms and error codes.

PROGRAM Mode

Enter or view step type, program loops, wait for... conditions, set points, auxiliary

(event) outputs ON/OFF, and step duration.

SETUP Mode

Set up or change operating parameters such as real time, high/low range, alarm types, alarm points, PID settings, RS-422 address.

Figure 4 -

Overview of the

Series 922

Operating

Modes

Where To Go From Here…

You are now ready to continue to How to Use the Keys and Displays,

Chapter 2.


11

Keys / Displays

Chapter 2

How to Use the Keys and Displays

This chapter will show you the Series 922 front panel, and the function of each display, key and LED. Figures 6 and 7 explain the 922 front panel.

Front Panel Information

Use Figures 6 and 7 to assist you in learning the locations and functions of the front panel components.

Use the following figures to learn the nature and function of the Series 922's keys and displays.

Figure 5 -

Series 922 Front

Panel Information

Figure 6

Figure 7

12

Where To Go From Here

Once you have studied the keys and displays in this chapter, and have a good idea of where everything is on the Series 922, continue to Chapter 3 for the

Sample Program. If you skip the sample program, do not forget to check the position of DIP Switch #1 before you begin programming your control after installation. With DIP Switch #1 OFF, the 922 saves your program whenever power is removed (warm start). With DIP Switch #1 ON, the 922 will clear its memory of all programmed information whenever power is removed, substituting default values (cold start).

WATLOW Series 922 User's Manual How to Use Keys and Displays, Chapter 2

Actual and Alphanumeric Display Area

ACTUAL Display

Shows the actual value of the process variable for Channel 1 in four digits.

Keys / Displays

°

F LED

Indicates the value in the ACTUAL display is temperature in degrees

Fahrenheit.

When both

°

C and

°

F

LEDs are OFF, the

922 is displaying

Process Variable

Units (PVUs).

°

C LED

Indicates the value in the ACTUAL display is temperature in degrees

Celsius.

Alphanumeric Display

Shows entry prompts, the parameter values in alphanumerics and

Channel 2 ACTUAL value.

Figure 6 -

Actual and Alphanumeric

Display

Front Panel

Information

Keyboard Area

MODE Key

This key steps the

Series 922 in sequence from prompt to prompt.

UP Key

Increases the value in the alphanumeric display. A light touch increases the value by one digit. Hold the key down to increase the displayed value at a rapid rate.

90

DOWN Key

Acts opposite the UP key. Decreases the value in the alphanumeric display. A light touch decreases the value by one digit. Hold the key down to decrease the displayed value at a rapid rate.

°

Front Panel Screw

Secures the control chassis in its case with a

1/4 turn clockwise or releases the chassis with a 1/4 turn counterclockwise.

Figure 7 -

Keyboard Front

Panel Information

RUN/HOLD Key

Executes or holds a program from any

Main menu.

Run/Hold LEDs

When the HOLD LED is

ON steady, the 922 is in a HOLD condition.

When the HOLD LED flashes, the unit is in a

WAITFOR step or has exceeded the guaranteed soak deviation..

ENTER Key

Enters selected (flashing) data into the microprocessor memory. This will clear an error code, or latched alarm indications when the ACTUAL display value returns to within the alarm limit.

When the RUN LED is

ON the 922 is in the

RUN condition.

When the RUN LED is flashing, the program is being held by the remote hold input.

How to Use Keys and Displays, Chapter 2 WATLOW Series 922 User's Manual

13

Sample Program

Chapter 3

Learning the Series 922 -

A Sample Program in Action

WARNING:

Doing a cold start will cause all SETUP parameters and files to be lost.

DO NOT put DIP switch #1 in the one position unless all user programmed information is to be cleared.

This chapter will guide you through an easy sample program for the Series

922. You can quickly grasp the necessary terms and concepts by entering values and then observing this exercise.

If you feel that your knowledge of ramping controllers does not require a sample program to learn the Series 922, skip this chapter.

A Brief Overview

This sample program teaches you the fundamentals of creating a ramping profile, along with ways to expand that profile to its greatest versatility.

The program example starts with a simple ramp and soak profile. A "ramp" progresses from one set point to another set point over a period of time.

Soaking controls the length of time the temperature holds at this level.

We then expand it to multiple ramp and soaks, add JUMPLOOP functions, perform an AUTOSTART, LINK to another profile, and finally perform a

WAITFOR step.

This sample program only goes through the steps of programming

Channel 1 of the Series 922. The process for Channel 2 is the same.

Events 3 through 8 are not shown.

At this point make copies of your Master Step Chart on Page 62. It is a good practice to keep track of your program as you go. It's also a good idea to sit down and define exactly what you want your program to do.

Clear Memory, Set DIP Switches

If you haven't already cleared your Series 922's memory, do a "Cold Start."

Turn the power OFF, open the 922 and ensure that DIP Switch #1 is ON.

Apply power momentarily and reset DIP Switch #1 to OFF. The program memory is now cleared. If you haven't done so already, attach your sensor as described in Chapter 4.

14


Sample Program, Chapter 3

Enter Real Time

First, set the Series 922's "real time-of-day, 24-hour clock. Remember that the MODE key is used to step through the menus. The UP/DOWN keys are used to select parameters and values, and remain flashing until you press the ENTER key.

1.

Press the MODE key until the SETUP menu appears. Press the

ENTER key.

2.

At ACCESS, select (0) with the UP/DOWN keys. Press ENTER. This is the calibration (CALIB) menu.

3.

Press the MODE key until HOUR appears in the alphanumeric display.

Note that hours are in a 24 hour format.

4.

Use the UP/DOWN keys to place hours into the display. The display flashes until you press ENTER.

5.

Press MODE to continue to the MIN parameter. Enter the correct value for minutes and press ENTER.

6.

Press the MODE key several times to return to the top of the ACCESS

(0) menu. At the ACCESS (0) prompt, which is the CALIB menu, you see the Real Time (TI) displayed.

7.

Continue to press MODE until you reach RETURN. Press ENTER to return to SYSTEM.

Sample Program

NOTE: When either the hours or minutes are entered, internal seconds are set to 0.

Before Entering Your Program

Before we begin to program your Series 922, there are a few other initial

SETUP parameters to enter. If you haven't tried any programming since your cold start, the C/F/U (Celcius/Fahrenheit/Units) and GS (Guaranteed

Soak) parameters are set to their appropriate values. Refer to the glossary for a more detailed definition. If you have already tried stepping through the parameters and entering values, it might be a good idea to go back and double check to see that the values are correct.

1.

Press the MODE key until SETUP appears. Press ENTER. Once again you see the ACCESS parameter. Use the UP/DOWN keys to enter (5) and press ENTER; this is the Special Function (SPCLFUNC) menu.

2.

Press MODE again until you see the C/F/U parameter. This parameter defaults to F. Use the UP/DOWN keys to enter degrees F (Fahrenheit).

Press ENTER.

NOTE: DIP Switch #2 must be OFF to access all SPCLFUNC parameters.


15


Sample Program

Skip Step 3 if you do not have an external event board connected.

3.

Continue through the menu with the MODE key until you see AUX1. Use the

UP/DOWN keys to enter AUX1 as an event (EV) and press ENTER. Do the same for AUX2. Default is AL (Alarm).

4.

Continue through the SPCLFUNC menu until you see GS (Guaranteed

Soak). Enter a value of (0); press ENTER. This parameter defaults to 0.

5.

Press the MODE key to move to the RETURN parameter. Press ENTER to return to SYSTEM.

Programming File 1

NOTE: EV1 and

EV2 will not appear unless the

Event Output board is connected, and AUX1 and 2 are events.

Our first step in programming is to make a short ramp and soak program. Step 1 initializes the set point to a known starting point for the ramp, Step 2 is a short ramp, Step 3 is a soak step, which holds the programmed set point constant for the programmed time. Step 4 is a STOP step which signals the end of a file.

1.

From the SYSTEM menu, press MODE until you see the PROGRAM menu.

Press ENTER.

2.

The Series 922 asks you for a FILE?. Your 922 should already say (1), but if you have entered any values, it may be different. Make sure it says (1).

Press ENTER.

3.

The display now shows STEP with a 1 flashing. Use the UP/DOWN keys to select (1) then press ENTER if it is not already there.

4.

Press the MODE key. Use the UP/DOWN keys to select the step type and values. Press ENTER. Use Table 2 to enter the corresponding parameters and values. The parameters appear from left to right on the table.

At the end of each menu, rather than press ENTER at the RETURN parameter to get to SYSTEM, press MODE for the STEP prompt. The step number automatically increments and flashes. Press ENTER.

Table 2 -

Series 922

Ramp and Soak

Program

FILE? STEP STEP

TYPE

1

1

1

2

SETPOINT

SETPOINT

SP1

75

100

HOUR

0

0

MIN

0

0

SEC

1

25

1

1

3 SETPOINT 100

4 STOP

0 0 25

EV1

OFF

ON

ON

EV2

OFF

OFF

OFF

NOTE: Step 4 must be entered as a step even though it defaults to a STOP step.

125

100

Temp/

°

F

75

50

Step 1

Initializes

Set Point.

25

0

Step 2

Ramps from

75 to 100

°

F.

Step 3

A soak step holds set point at 75

°

F.

0 5 10 15 20 25 30 35 40 45 50

Time (seconds)

Step 4

A stop step.

16



Running Your Program

Sample Program

1.

Return to SYSTEM using the ENTER key at the RETURN prompt. Press the RUN/HOLD key.

2.

The 922 asks what FILE? to run. Enter (1) if it is not already entered.

3.

The 922 asks what step you would like to start on. Again, press (1) if it is not already there, and press ENTER.

The 922 quickly shows the step type and jumps to Step 1; the RUN LED is lit.

After each step is completed, the next step the 922 performs appears.

You may step through the parameters to see what the step type is and what the parameters are set at by pressing the MODE key. The Time Remaining is also displayed at the end of the menu. Once the Time Remaining reaches

00:00:00, it shows what step the profile has progressed to.

Editing Your Program

Now let's try editing the program by expanding it with another ramp and soak step, and adding a jump loop. We'll jump to Step 1 and repeat Steps 1 through 6 two more times. This is accomplished by programming a Jump

Step (JS) = 1 and Jump Count (JC) = 2. This means that once the 922 goes through the program and reaches Step 6, it jumps back to Step 1 and repeats the program two more times.

By this time you should understand the basic concept of the Series 922 and be able to get around on your own. Remember that the MODE key takes you through the menus. Use the UP/DOWN keys to select parameters, values and step types. Press ENTER and your information is entered.

1.

Return to the PROGRAM menu.

2.

Enter FILE? (1), Step (4). We are going to change this step type from a

STOP step to a SETPOINT step. This is our second ramp. Use Table 3 to enter values into the corresponding parameters.

3.

Once you have edited your program, run it again and watch its progress.

FILE? STEP STEP

TYPE

1

1

4

5

SETPOINT

SETPOINT

SP1 HOUR

125

125

0

0

MIN SEC

0

0

25

25

EV1

OFF

OFF

EV2

ON

ON

JS

-

-

1

1

6 JUMPLOOP -

7 STOP

1

JC

-

-

2

Table 3 -

Editing Your

Program,

Steps 4 - 7

125

Step 4

Ramps

Step 5

Soaks

Step 6

Jumps to Step 1 and repeats program twice.

(JC-2)

100

Step 2

Ramps

Step 3

Soaks

Temp/

°

F

75

50

Step 1

Initializes

Set Point.

25

0

Edit Program

0 10 20 30 40 50 60 70 80 90 100

Time (seconds)



17

Sample Program

Adding AUTOSTART and LINKing Files

The Series 922 gives you the capability to link files together. The LINK step allows you to link the last step of a profile to the first step of another profile.

We are going to edit the program again by adding a LINK step at the end of the profile. First, we must create another file. If you try to run your program with a

LINK that goes to a nonexisting file, you will receive ER2 0036. This error means

"no file found." Follow Table 5 to add a LINK and a new FILE to your program.

The 922 can also automatically start your program, or a step, on a specified day and time. When you use an AUTOSTART in your program, it stops your program, and waits for the day and time you entered under the AUTOSTART step type. The

Series 922 then executes the next sequential step. AUTOSTART allows you to wait up to seven days in the future; day 0 is always the current day. The days accumulated increases by 1 every time the Real Time clock goes from 23:59 to

00:00. If 0 is programmed for DAY, and the Real Time clock is greater than the programmed AUTOSTART time, the AUTOSTART waits 6 days along with the programmed time.

Table 5 -

LINKing to

Another File with

AUTOSTART.

FILE? STEP STEP TYPE SP1 DAY HOUR

1 8 LINK

5

5

1

2

AUTOSTART

SETPOINT 175

0 current

0

MIN current + 5

0

5

5

5

5

5

3

4

5

6

7

SETPOINT

SETPOINT

SETPOINT

SETPOINT

STOP

175

100

100

75

0

0

0

0

0

1

0

0

SEC EV1 EV2 FILE?

5

50

20

15

10

25

ON

ON

ON

ON

OFF

ON

ON

OFF

OFF

OFF

Run your program again beginning at FILE 1, STEP 8. Step through the menu to see what step type you are on, and your time remaining. Watch to see what happens at the end of File 1. The AUTOSTART waits for approximately 5 minutes into the future before continuing with File 5.

Profile #5

175 Step 2

Ramps to 175

°

F.

150

Step 3

Soak step.

125

Temp/

°

F

100

75

Step 1

Autostart step.

50

25

0

0:00 0:30 1:00

Step 4

Ramps to 100

°

F.

1:30 2:00

Minutes:Seconds

18


Step 5

Soak step.

Step 6

Ramps to 75

°

F.

Step 7

Stop step.

2:30 3:00


Sample Program

The WAITFOR Step

The last step type we will work with is the WAITFOR step. This is a test step.

It compares a specified temperature with the process temperature, or a specified event state with the event input, before continuing the program. It can also wait for a programmed time to elapse before continuing on with the program.

After the test is successful, the program continues with the next sequential step. Events cannot be programmed in this step; they maintain their previous state.

Return to PROGRAM and enter FILE? (5). Add a WAITFOR step to the end of that file.

WHR WMN WE FILE STEP STEP

TYPE

5

5

6

7

WAITFOR

STOP

W1

-

Table 6 -

The WAITFOR Step

WHR, WMN, WE and W1 are unprogrammed. To program a WAITFOR time, enter your values for WHR and WMN. The programmed WAITFOR time waits until the specified amount of time has elapsed. WAITFOR time (WHR, WMN),

WE, and Channel 1 process variable (W1) can be programmed simultaneously.

Each of these Wait For conditions must be met before the program will continue. Once a WAITFOR condition is satisfied it latches, and does not have to be performed again.

Run your program from FILE 5, STEP 1. If you do not want to go through the entire program, you can START your program at any STEP in FILE 1 or 5.

When your program reaches FILE 5, STEP 6, the HOLD LED begins flashing.

This means your program is still running, but it is HOLDing, to WAITFOR the

ACTUAL temperature to equal the WAITFOR Channel 1 (W1). When they are equal, the HOLD LED stops flashing. Your program continues to the last step, a STOP step, and HOLDs again. In the HOLD mode the Series 922 controls the process to the set points of the last SP step.

If you want to change a programmed step, return to the PROGRAM menu, and enter the FILE and STEP number you want changed. Use the UP/DOWN keys to select another step type and press ENTER.

To clear all parameters under a step type of its programmed values, return to that step type and press ENTER. All parameters return to their defaults.



19

Sample Program

Running Your Series 922

To run your Series 922, you must be at one of the three main level operating parameter menus, SYSTEM, PROGRAM, or SETUP. Press the RUN/HOLD key.

The Series 922 asks what file you want to run, and asks what step to begin with.

After entering the file and step number, your program begins, and the RUN LED is lit. While in the RUN mode, you can only view the current file and step.

To stop a running program, press the RUN/HOLD key. To resume a previously halted program press the RUN/HOLD key. When the FILE? parameter appears, press the MODE key to advance to the next parameter. When START appears, press the MODE key again. Next, the RESUME? parameter is now present. Press

ENTER.

RUN Menu

NOTE: Shaded parameters may not appear on your control.

These parameters are dependent on how your control is configured.

See Chapter 6 for more information.

Figure 8 -

RUN Key Flow

Diagram

SYSTEM

F ILE ?

( )

START

( )

RESUME?

RETURN

To SYSTEM Menu

F ILE

STEP

[ ]

[ ]

SETPOINT

SE1

[ ]

SE2

[ ]

HOUR

[ ]

MIN

[ ]

SEC

[ ]

00 : 00 : 00

One of the three step types will be displayed depending on the type of step PROGRAMmed.

JUMPLOOP, STOP, and LINK step types are immediate, and will not be visible.

JUMPLOOP WAITFOR

W1

[ ]

W2

[ ]

WHR

WMN

[ ]

[ ]

WE

[ ]

00 : 00 : 00

AUTOSTART

DAY

[ ]

HOUR

[ ]

MIN

[ ]

00 : 00 : 00

STOP LINK

[ ]

F ILE

SP1

SP2

C2/RH

[ ]

[ ]

[ ]

EV1

EV2

[ ]

[ ]

EV3

[ ]

[ ]

EV4

EV5

[ ]

EV6

[ ]

[ ]

EV7

EV8

[ ]

EI

[ ]

M

E

= MODE Key

= ENTER Key

= UP/DOWN Key

Where To Go From Here

Good job! You've just programmed and run the Series 922 sample program.

As soon as you feel comfortable with the Series 922 sample program, move on to Installation and Wiring, Chapter 4. Or if you have already installed and wired your system, go to the Master Step Chart in Chapter 5 and begin entering and documenting your Series 922 program.

20



Chapter 4

How to Install and Wire the Series 922

This chapter tells you how to install the Series 922. All mounting and wiring information is right here. Because Watlow controls are thoroughly tested, and

"burned in" before leaving the factory, the Series 922 is ready to install when you receive it.

But before you begin working or cutting holes in panels, read through this chapter to gain an understanding of the entire installation. Consider sensor installation carefully. You'll need to look at the noise reduction guidelines before making your panel cutout.

Install/Wire

Miscellaneous Sensor Information

Temp - RH

Wet Bulb/Dry Bulb - In this 922 configuration, a dry bulb RTD measures temperature on Channel 1. A wet bulb RTD, in combination with the dry bulb RTD, senses relative humidity on Channel 2. The 922 calculates the temperature difference between the two bulbs to determine per cent relative humidity.

The humidity/dehumidify outputs (Outputs 3 & 4) are disabled when the Channel

1 temperature falls below 32

°

F/0

°

C, or goes above 212

°

F/160

°

C. The RH display reads OFF, and the retransmit output is 0 (volts) if ANLG = C2. ANLG is located in the Setup menu under Access (5).

Solid State - RH Sensor

Vaisala Model HMM 30C Relative Humidity Sensor - With the Vaisala configuration, Channel 1 must be configured to measure temperature, and Channel 2 must be a process input configured for humidity with the Vaisala sensor. See below for the TYP parameter description. This parameter is located in the Setup menu, under Access (5). DIP switch #4 must be set to the ON position. The humidity and dehumidify outputs (Outputs 3 & 4) are disabled when the Channel 1 temperature falls below -40

°

F/-40

°

C or goes above 320

°

F/160

°

C. The RH display will read OFF and the retransmit output is 0 (volts) if ANLG = C2. ANLG is located in the Setup menu under Access (5).

Temp - Temp

For Temp-Temp RTD operation, each dry bulb RTD or thermocouple senses temperature for its channel.

RTDs

The RTDs for the Series 922 are customer-supplied items. They may be Gordon

Part #S001-0133-0000, which is a wire-wound RTD inside a sealed, 18% Nickel-

Silver sheath, made for fast temperature response. The detector element is platinum wire 100

Ω

at 0

°

C with a temperature coefficient of 0.003916

Ω

/

Ω

/

°

C. The sheath is 0.1875 in. (4.7625mm)diameter, 2.75 in. (69.85mm) long. The three wire leads are 48 in. (1219.2mm) long and teflon insulated.

NOTE: The dry bulb and wet bulb sensor should be mounted in the same location.

However, do not locate the wet bulb ahead of the dry bulb in the air stream, this could cause incorrect relative humidity readings.

How to Install and Wire, Chapter 4 WATLOW Series 922 User's Manual

21

Install/Wire

Contact Gordon at:

5710 Kenosha St., Box 500

Richmond, IL 60071

Phone: 815/678-2211

Excessive lead length in a two-wire RTD sensor can create indication errors. To combat this, use a three wire sensor in long lead applications.

RTD - The Dry Bulb Installation

We suggest you mount the dry bulb RTD at a location in your process or system where it reads an average temperature. Air flow past this sensor should be moderate. The sensor should be thermally insulated from the sensor mounting.

RTD - The Wet Bulb Installation

One way to prepare the RTD wet bulb sensor for reading relative humidity on

Channel 2 is to slip a cotton wick over the sensor sheath, Watlow Part # 0830-

0111-0000 or an equivalent. Put one end of the wick in water. Some systems use a small trough of water with a float valve to replenish the evaporating liquid.

Use distilled water to avoid mineral deposits on the wick that can change the

%RH reading. The wicking distance should be as short as practical. The cotton wick must be free of any sizing and starch. The "float valve-trough" systems should also remove the water when the ambient temperature goes below freezing or above boiling.

To obtain valid %RH readings, air flow past the %RH sensor must be sufficient to evaporate the maximum amount of water from the wick without drying it out.

Evaporation cools the sensor; the amount of cooling relates directly to the relative humidity present.

Thermally insulate the wet bulb sensor from the sensor mounting. This prevents mounting surface heat from flowing into the sensor sheath and changing the wet bulb temperature. (The result of such heat flow will be a humidity reading higher than actual).

Thermocouple Installation Guidelines

Locate the thermocouples in your process or system where they read average temperatures. Air flow past these sensors should be moderate. The sensors must be thermally insulated from the sensor mounting. Both thermocouples must be ungrounded to obtain correct readings.

Event Input and Remote Hold Input

These inputs accept a switch closure to digital common shown on Page 27.

22

WATLOW Series 922 User's Manual How to Install and Wire, Chapter 4

Definitions

Ground Loop - A condition created when two or more paths for electricity are created in a ground line, or when one or more paths are created in a shield.

Earth Ground - The starting point for safety and computer grounds. It is usually a copper rod driven into the earth.

Safety Ground - A ground line run with electrical power wiring to protect personnel.

Computer Ground - A ground line for the ground connections to computers or microprocessor-based systems. This line is isolated from safety ground.

Common Mode Line Filter - A device to filter noise signals present on both power line legs with respect to ground.

Differential Mode Line Filter - A device to filter noise signals present between the two power lines themselves.

The Dos and Don'ts of Clean Input Power

Do keep line filters as close to the control as possible to minimize the area for interference pick up.

Wiring Guide

Do use twisted pair wire and possibly shielded wire from line filters to the control keep the line "clean."

Do keep low power control wires physically separated as far as possible from line voltage wires. Also keep all controller wiring separate from other nearby wiring.

Physical separation is extremely effective. A 12 inch minimum separation is usually effective.

Do use common mode, differential mode or a combination of the two filters wherever power may have electrical interferences.

Do cross other wiring at 90

°

angles whenever crossing lines is unavoidable.

Do have a computer ground line that is separate from all other ground lines. This computer ground line should ideally terminate at the ground rod where the electrical service is grounded.

Don't connect computer ground to safety ground or any other ground points in

the electrical system, except at the ground rod.

Don't mount relays or switching devices close to a microprocessor control.

Don't run wires carrying line voltage with signal wires (sensor, communications or other low power lines) going to the control.

Don't use conduit for computer ground.

Don't have phase angle-fired devices in the same electrical enclosure or on the same power line with the control.

Don't connect ground to the control case if the control is mounted in a grounded enclosure (prevent ground loops).

Don't fasten common mode line filters or filters with metal cases to metal that is at ground potential. This prevents ground loops and maintains filter effectiveness.


23

Wiring Guide

How to Check for Ground Loops

To check for ground loops, disconnect the ground wire at the ground termination. Measure the resistance from the wire to the point where it was connected.

The ohmmeter should read a high ohm value. If you have a low ohm value across this gap, there is at least one ground loop present in your system.

Also, check for continuity; your reading should be "open". If you do find continuity, you must now begin looking for the ground loops. Begin disconnecting grounds in the system one at a time, checking for continuity after each disconnection. When continuity reads "open" you have eliminated the ground loop(s).

Also as you reconnect grounds, keep making the continuity test. It is possible to reconnect a ground loop.

Table 7 -

Noise Suppression

Device Ratings

How To Eliminate Noise

• Use "snubbers" ("QUENCHARC™") to filter out noise generated by devices such as relays, relay contacts, solenoids, motors, etc. A snubber is a simple filter device using a 0.1

µ f, 600 volt, non-polarized capacitor in series with a

100

Ω

, 1/2 watt resistor. The device can be used on A.C. or D.C. circuits to effectively dampen noise at its source.

• The general purpose Watlow snubber, described above, is 0804-0147-0000.

For other "QUENCHARC" sizes contact:

PAKTRON

P.O. Box 5439

Lynchburg, VA 24502

Phone: 804/239-6941

• A Metal Oxide Varistor (MOV) can be used to limit voltage "spikes" that occur on the A.C. supply lines as a result of lightning strikes, switching large motors, etc. The MOV is available in several varieties and for 115 or 230 volt lines. The device dissipates the voltage "spikes" to ground and in doing so repeatedly, deteriorates its ability to function. MOVs have a limited life.

• "Islatrols" and other similar power line filters are designed to carry the power for the control circuit and "buffer" the control circuit from A.C. line noise.

Devices like the Islatrol use media (electromagnetic filtering) other than electric circuits to filter out electrical noise. Take care in matching the power capabilities of the filter with power demands of the circuit. Keep line filters as close to the control as possible to minimize the area for interference pick up.

Noise Suppression Devices Available From Watlow

Watlow Winona stocks a few key noise suppression parts. You may order these by calling your local Watlow distributor.

Item

Differential Mode Line Filter

Metal Oxide Varistor

MOV

Electrical Ratings

Refer to the Islatrol listing below.

150V, 80 Joule

275V, 75 Joule

Part Number

0802-0273-0000

0802-0266-0000

24


Line Filtering Configurations for Controls

These three diagrams show you filter configurations for removing input power noise. Choose the one best suited for your system if you are unsure which one to use. For very "dirty" or critical application -use microcomputer-regulated power supply or Uninterruptable Power Supply (U.P.S.)

Wiring Guide

L1

D.M. Line Filter

L2

Ground

Line Load

Shield

Control

Figure 9 -

Differential Mode

Filter Diagram

NOTE

:

Keep filters

12 inches or less from the control.

Minimize the line distance where noise can be reintroduced to control.

L1

L2

Ground

C.M. Line Filter

Line Load

L1

L2

C.M. Line

Filter

Ground

Line Load

MOV

D.M. Line

Filter

Line Load

Shield

Control

Figure 10 -

Common Mode

Filter Diagram

NOTE

:

To prevent ground loops, do not fasten common mode line filters or filters with metal cases to metal that is at ground potential. Doing so will reduce filter effectiveness.

Shield

Control

Figure 11 -

Combination

Differential-Common

Mode Filter Diagram


25

Installation

Installation Information

The Series 922 mounts in a panel cutout with two brackets. These brackets hold the case against the front panel. The Series 922 behind-panel dimensions are 3.56 in. (9.05mm) high by 3.56 in. (9.05mm) wide by 6.0 in. (15.24mm) deep. Figure 12 shows the dimensions of the front panel bezel. The 922 weighs 2.75 lbs. (1.25Kg).

For unit dimensional and mounting information, including the location of mounting brackets and size of the front panel cutout, see Figures 13 through 15.

Your panel's thickness can be from 0.06 (1.5mm) to 0.25 in. (6.3mm).

Installation Procedure

Follow this procedure to mount the Watlow Series 922 Temperature Control:

1.

Make a panel cutout per the dimensions in Figure 15.

2.

Remove the 922 from its case by turning the front panel screw 90

°

counter clockwise (CCW). Grip the bezel firmly and pull the control chassis out of the case.

CAUTION: The front panel screw turns

90

°

only. Do not apply excessive force or turn the screw more than

90

°

.

3.

Place the case in the cutout you just made.

4.

Attach the mounting brackets either to the top and bottom, or to both sides of the unit.

5.

Tighten the mounting brackets securely against your panel.

6.

Insert the control chassis into its case and press the bezel to seat it. Turn the front panel screw 90

°

clockwise (CW) to lock the control in place. The hardware installation is complete. Go on to the wiring section from here.

3.81 Sq.

(96.77mm)

3.81 Sq.

(96.77mm)

Figure 12 -

Series 922 Faceplate

Dimensions

26


0.92"

(23 mm)

Bezel

7.8"

(197 mm)

6.0"

(152 mm)

DB9

Communications

Connector

Install / Wire

3.0"

(76 mm)

3.56 "

±

0.015"

(90 mm

±

0.381)

Mounting Bracket

1.75"

(45 mm)

Event Output

Ribbon Connector

Figure 13 -

Series 922

Dimensions

(side view)

0.25"

(6 mm)

4.0"

(102 mm)

3.5"

(89 mm)

Alarm/Event Terminal Strip

8.0"

(203 mm)

7.5"

(191 mm)

1.3"

(33 mm)

0.36"

(9 mm)

Power Terminal Strip

Series 922 Interface

Connection

Four 0.156' dia

(r4 mm) mounting holes

See Page 33 for power wiring.

3.62" to 3.65"

(92.00 to 92.79mm)

Figure 14 -

External Event/

Alarm Board

Dimensions

Your Panel

Thickness:

0.06" to 0.25"

(1.524 to 6.35mm)

Panel

Cutout

3.63" x 3.63"

(92.08 x 92.08mm)

Nominal

3.62" to 3.65"

(92.00 to 92.79mm)

Figure 15 -

Series 922

Panel Cutout

Dimensions


27

Wire Power

Series 922 Power Wiring

WARNING:

To avoid potential electric shock, use

National Electric

Code safety practices when wiring & connecting this unit to a power source and to electrical sensors or peripheral devices.

Chassis

GND

Green

GND

Wire

17

18

19

20

NOTE:

For 230VAC, jumper 18 to 19

L1 (Hot)

L2 (Hot)

21

Earth

Ground

Figure 16 -

Series 922 Power

Wiring Diagram.

22

23

Green

GND

Wire

Remote Hold

NOTE:

For 115VAC, jumper 17 to 19 and jumper 18 to 20

Chassis

GND

17

18

19

20

21

22

23

L1 (Hot)

L2 (Hot)

Earth

Ground

Remote Hold

24

External Event

Input

24

External Event

Input

WARNING:

To avoid electric shock, connect the chassis ground terminal to "Earth

Ground."

CAUTION:

Remove the short green ground jumper on the back of the 922 (T-21) if your control is mounted in a metal panel connected to safety (chassis) ground. Removing the jumper will prevent ground loops OR leave the short green ground jumper in place if the Series 922 case is not connected to safety (chassis) ground.

28

Connect AC power lines and jumper wires to the power supply terminal strip of the Series 922. Study the strip connections carefully before beginning. Be sure to use these jumpers on the power supply terminal strip. For 230VAC, jumper 18 to 19. For 115VAC, jumper 17 to 19 and jumper 18 to 20.

All wiring and fusing must conform to the National Electric Code and to any locally applicable codes also.

Before applying power, open the Series 922 and set DIP Switch #1 in the "ON" position for a Cold Start. Replace the control chassis in the enclosure. Apply power to the unit. (This clears all previously entered information from the 922; it is a "clean" or "cold" start).

Now remove power again, open the unit, and set Switch #1 to OFF. (This makes the next start a "warm" one, retaining all subsequently entered information in the processor's memory). Close the 922.

When applying power without sensor inputs on the Signal Conditioner terminal strip, or if the control is not configured for the correct sensor input, the Series

922 alternately flashes from SYSTEM to ER1 00XX. This is an error code indicating an open sensor. These are normal displays for a unit without sensors or improper configuration.

For more information on remote hold and external event input refer to page 38.


Wire Input

How to Wire the Series 922

This section has all the information you need to complete a good wiring job on the Series 922 and your system. Please read the Safety Information in the narrow column on the outside of each page. You will find internal circuits on the left in the following diagrams, and external circuits on the right. In addition, input and output options are listed by model number. Refer to the unit sticker on your control to be sure that you are wiring from the corresponding diagram.

We suggest that you read through the entire section before beginning your hookup. Then proceed, starting with the sensor inputs, auxiliary outputs, then control outputs, data communications, and finally, power wiring.

It is very important to enter a system set point in the Series 922 before applying power to the load circuitry.

• In all wiring diagrams, internal circuits are on the left and external circuits are on the right.

Input Option "1" or "6", Terminals 1 - 8

WARNING: To avoid electric shock, make all connections on the back of this control before connecting power to the control. Also disconnect power before opening the

Series 922. Do not apply load power to the output circuits until you have entered a system set point.

1

2

5

6

7

3

4

8

Retransmit Common

Retransmit Output

-

+

Chart

Recorder

(Optional)

S1

NOTE: Input impedance must be 10K or greater.

S2

S3

Channel 2

RTD

S1

S2

Channel 1

S3

Figure 17 -

Input Option "1",

Dual RTD, Wiring

Diagram.

NOTE: For a twowire RTD -

Channel 2:

Use Terminals 3 and

4 for RTD, and jumper Terminal 5 to Terminal 4.

Channel 1:

Use Terminals 6 and 7 for RTD, and jumper Terminal 8 to Terminal 7.


29

Wire Input

Figure 18 -

Input Options

"2" & "7",

RTD/Process,

Wiring Diagram.

NOTE: For a twowire RTD - Channel

1:Use Terminals 6 and 7 for RTD, and jumper Terminal 8 to

Terminal 7.

Input Options "2" & "7", Terminals 1 - 8

Model # 922A -

2

_ _ 0 - _ 000 &

Model # 922A - 7 _ _ 0 - _ 000

1

2

3

4

5

6

7

8

Retransmit Common

Retransmit Output

-

+

Chart

Recorder

(Optional)

Process

+

0 - 5V, 4 - 20mA input

Channel 2

Process -

S1

0 - 5V, 4 - 20mA input

S2

S3

Channel 1

RTD

NOTE: Jumper terminal 4 to 5 only when using 4-20mA input.

Input Impedance:

4-20mA = 250

0-5V = 100K

Input Option "3", Terminals 1 - 8

Model # 922A -

3

_ _ 0 - _ 000

Model # 922A -

A

_ _ 0 - _ 000

Model # 922A -

B

_ _ 0 - _ 000

Figure 19 -

Input Option

"3", "A", or "B"

T/C and Process,

Wiring Diagram.

2

3

4

5

6

7

8

1

Retransmit Common

-

Retransmit Output

Process

+

+

Chart

Recorder

(Optional)

0 - 5V, 4 - 20mA input

Process

-

0 - 5V, 4 - 20mA input

T/C +

Channel 2

Channel 1

T/C -

30


Wire Input


Model # 922A -

4

_ _ 0 - _ 000

1

2

3

4

5

6

7

8

Retransmit Common

Retransmit Output +

-

Chart

Recorder

(Optional)

Process

+

0 - 5V, 4 - 20mA input

Channel 2

Process

-

Process

+

Process

-

0 - 5V, 4 - 20mA input

0 - 5V, 4 - 20mA input

4 - 20mA

Sensor

0 - 5V, 4 - 20mA input

Channel 1

Figure 20 -

Input Option "4"

Dual Process,

Wiring Diagram.

NOTE

1:

Jumper terminal 4 to 5 only when using 4-20mA input for Channel 2.

NOTE

2:

Jumper

Terminals 7 to 8 when using

4 - 20mA input for

Channel 1.


Model # 922A -

5

_ _ 0 - _ 000

Model # 922A -

8

_ _ 0 - _ 000

Model # 922A -

9

_ _ 0 - _ 000

1

2

3

4

5

6

7

8

Retransmit Common -

Retransmit Output +

Chart

Recorder

(Optional)

+ T.C.

- T.C.

+ T.C.

- T.C.

How to Install and Wire, Chapter 4

Channel 2

Channel 1

Figure 21 -

Input Option

"5", "8", or "9"

Dual T/C,

Wiring Diagram.

WARNING:

Use ungrounded sensor for proper operation.


31

Wire Output

Figure 22 -

Dual S.S. Relay

Output, Option

"BB", Wiring

Diagram.

Output Option "BB", Dual Solid State Relay

Model # 922A -

_ BB

_ - _ 000

Channel 1

Output 1

Output 2

Channel 2

Output 3

Output 4

9

10

11

12

LOAD

LOAD

13

14

LOAD

15

16

LOAD

L2 (Neutral)

L1 (Hot)

Figure 23 -

Solid State Switch,

Option "CC", Wiring

Diagram.

NOTE: If

SPCLFUNC parameters OUT 1 and/or OUT2 are set to CL HT, then

Outputs1 and/or 3 will be the cooling output and

Outputs 2 and/or

4 will be the heating outputs.

Output Option "CC", Solid State Switch

Model # 922A - _

CC

_ - _ 000

Channel 1

Output 1

Output 2

Channel 2

Output 3

Output 4

9

11

10

12

13

14

15

16

20mA Max

20VDC

20mA Max

20VDC

20mA Max

20VDC

20mA Max

20VDC

Figure 24 -

4-20mA/Solid State

Output, Option

"FB", Wiring

Diagram.

32

Output Option "FB", 4-20mA/ Solid State

Model # 922A - _

FB

0 - _ 000

Channel 1

Channel 2

Output 1

Output 2

Output 3

Output 4

-

9

10

11

12

13

14

15

16

+

600 Max

4-20mA

-

LOAD

Fuse

+

600 Max

-

4-20mA

LOAD

Fuse


L2

L1

Use the following figures to learn the connections and wiring of the External

Event/Alarm Board. Refer to Page 27 for dimension and mounting information.

Figure 26

Event Board

Figure 25 -

External Event/

Alarm Board

Information.

Figure 28a & 28b

Figure 27

Control Power

L2 L1 GND

Control Power

L2 L1 GND

Earth Ground

L2B

L1B

L1A

L2A

N.C.

Earth Ground

L2B

L1B

L1A

L2A

N.C.

Figure 26 -

External Board

Control Power

Wiring.

115 VAC

230 VAC

An auxiliary power supply is available on the Series 922 event board to supply DC voltage needed to operate the Vaisala Model HMM 30C RH sensor or other transmitters or transducers. The supply voltage varies from 21 to 33VDC, with the maximum current output of 25mA.

External Event Board to Series 922 Connection

Figure 27 -

Ribbon Cable

Connector to

Series 922.

Ribbon Cable Connection

to Series 922


33

Event Board

NOTE: Check model number for appropriate diagram.

Figure 28 -

Event Option "B" and "K," Solid State

Relay

Event Output Option "B" and "K", Solid State Relay

0.5A @ 24V~ (VAC) Min., 253V~ (VAC) Max.

Model #A007-1732-XXBX

With RC Suppression.

Minimum OFF-state impedance 20K .

Model #A007-1732-XXKX

Without RC Suppression.

Minimum OFF-state impedance 31M .

Event/Alarm Outputs

EV8

EV7

EV6

EV5

EV4

EV3

EV2

AL2

EV1

AL1

1 0

9

8

7

6

5

1 6

1 5

1 4

1 3

1 2

1 1

2

1

4

3

Load 8

Load 7

Load 6

Load 5

Load 4

Load 3

Load 2

Load 1

L2

L1

Load Power

Figure 28a -

Event Option "C"

Switched DC

CAUTION: If AC load is connected to

"C" option output, damage may occur to event board and to 922.

Event Output Option "C", Switched DC

Model #A007-1732-XXCX

EV8

EV7

EV6

EV5

EV4

EV3

EV2

AL2

EV1

AL1

9 +

8 -

7 +

6 -

5 +

4 -

3 +

2 -

1 +

16 -

15 +

14 -

13 +

12 -

11 +

10 -

3-32V

Î

( V D C )

SSR

3-32V

Î

( V D C )

SSR

34


Single Phase 120VAC Application

WARNING:

Install High or low temperature limit control protection in systems where an overtemperature or undertemperature fault condition could present a fire hazard or other hazard. Failure to install temperature limit control protection where a potential hazard exists could result in damage to equipment and property, and injury to personnel.

Wiring Example

Wet Bulb RTD

L2

Cooling Output

(internal to oven)

L1

L1

120 VAC

Control

Power

L2

Earth Ground

Figure 29 -

Series 922 System

Wiring Example.

Dry Temp. RTD

L2

L1

L2

L1

L1

L1

Load

Power

Humidifier

Dehumidifier

Control Output

Fuses

Mercury

Relay for

Control

L1

High Limit

Control Power

L2

120 VAC

Load

Power

L2

L2

Dry Temp.

RTD Sensor

Heater

Oven

Coil

Wet Bulb

RTD Sensor

High Limit

Mechanical

Contactor

Limit Sensor

Fuse

Indicator ON when

L2 limit trips

L1

Fuse

Normally Open

Momentary

Switch

Integral Setpot

140A-16XX-6000

High Limit Control

(-) (+)TC Input

WARNING: With

Watlow mercury relays, load must have a unity power factor. For RESIS-

TIVE LOADS ONLY.


35

Chapter 5

How to Tune the Series 922

This chapter will explain tuning the 922 to the system it controls.

Recommended Tuning Reference

There are a number of quality references on the art of tuning electronic controllers to the systems they control. If you are not an instrument technician qualified to tune thermal systems, we suggest that you obtain and become familiar with the reference below before attempting to tune your system.

Remember that the time you spend tuning your system is relative to the quality of control you need.

Tuning of Industrial Control Systems

Armando B. Corripio

Published by the Instrument Society of America

Using A Chart Recorder

The tuning procedure will be greatly simplified if you use a chart recorder to assist in tuning the Series 922. Connect the chart recorder to the analog retransmit signal.

The analog retransmit signal provides a chart recorder output represented by

C1 or C2 (Actual process variable), or SP1 or SP2 (Set Point temperature).

The user selectable scaling factors are 1, 2, 5, or 10mV per least significant digit.

If you don't have a chart recorder available, you can still plot the time vs.

temperature system response. Record the 922's ACTUAL display readings on graph paper with an x, y axis to accomplish the same thing.

36


How To Tune and Run the Series 922, Chapter 5

Tuning

For optimum control performance, tune the 922 to the thermal system. The tuning settings here are meant for a broad spectrum of applications; your system may have somewhat different requirements. Refer to the key flow charts, diagrams and definitions on Pages 42 - 61 for prompt location and description. Repeat this tuning procedure for both Channel 1 and 2.

Tuning

NOTE:

When tuning in the Heat mode, use PID prompts followed by H.

When tuning in the Cool mode, use PID prompts followed by C.

1.

Apply power to the Series 922 and enter a set point in the SYSTEM, menu. Next, go into the SETUP mode, and enter ACCESS (1), the

SPCLFUNC (Special Function) parameter. Using the MODE, UP/DOWN, and ENTER keys, set the Operating Parameters initially: (Proportional

Band) PB_H (C) = 0, (Reset) RS_H (C) = 0.00, (Rate) RT_H (C) = 0.00,

(Cycle Time) CT_H (C) = 5. Under ACCESS (0) enter CAL_ = 0.

Allow actual process temperature to stabilize at or near Set Point (SP). The

ACTUAL display will indicate when the load is stabilized near setpoint.

2.

Proportional Band Adjustment: Gradually increase PB until the ACTUAL display temperature stabilizes to a constant value. The temperature will not be right on set point because the initial reset value is 0.00 repeats per minute. The ACTUAL temperature will stabilize below the desired setpoint.

(When PB = 0, RS, RT, and CT are inoperative, and the 922 functions as a simple ON/OFF control with a 3

°

F or 1.7

°

C switching differential.)

3.

Reset Adjustment: Gradually increase RS until the ACTUAL display temperature begins to oscillate or "hunt". Then slowly decrease RS until the ACTUAL display stabilizes again near set point NOTE: This is a slow procedure, taking from minutes to hours to obtain optimum value.

4.

Cycle Time Adjustment: Set CT as required. Optimum system control is always achieved with faster cycle times. However, if a mechanical contactor or solenoid is switching power to the load, a longer cycle time may be desirable to minimize wear on the mechanical components.

Experiment until the cycle time is consistent with the quality of control you want.

5.

Rate Adjustment: Increase RT to 0.10 min. Then raise SP by 20

°

to

30

°

F, or 11

°

to 17

°

C. Observe the system's approach to SP. If the load temperature overshoots SP, increase RT to 0.20 minutes.

Then raise SP by 20 to 30

°

F, or 11 to 17

°

C and watch the approach to the new set point. If RT is advanced too far, approach to the set point will be very sluggish. Repeat as necessary until the system rises to the new set point without overshooting or approaching the set point too slowly.

6.

Calibration Offset Adjustment: You may want your system to control to a temperature other than the value coming from the input sensor. If so, measure the difference (as much as

±

90

°

F or

±

50

°

C) between that temperature, perhaps at another point in the system, and the process value showing in the alphanumeric display. Then enter the amount of CAL offset you want. Calibration offset adds or subtracts degrees from the value of the input signal.

After you have tuned your Series 922, continue to Chapter 6 to learn how to

Program your Series 922 for your system.

How To Tune and Run the Series 922, Chapter 5 WATLOW Series 922 User's Manual

37

Programming

Chapter 6

How To Program The Series 922

This chapter enables you to setup the Series 922 quickly and easily. It explains why it's a good idea to write out your parameter values. Chapter 6 also shows you flow diagrams of the programming process.

Write Out Your Program

The Watlow Series 922 controls temperature for a specific heating and/or cooling process. Your setup parameter values, when they're entered, give the Series 922 orders for the work you want it to perform.

Since the amount of information in the setup is extensive, we suggest that you write the value on a copy of the Master Step Chart on Page 62. This enables you to program the Series 922 quickly and without mistakes. The chart makes a good record of your values.

Select the Proper DIP Switch Settings

Prior to programming, and operating the Series 922, you must set the DIP

Switches.

DIP Switch #1 sets a "warm" or "cold" start following power removal from the 922.

With the DIP switch in the OFF position for a "Warm Start", the microprocessor uses previously programmed information as if power had not been removed. A

Cold Start starts "clean" or completely cleared of all user-programmed information when the DIP switch is in the ON position. All parameters are empty or set to the default limits.

DIP Switch #2 in the ON position displays only certain factory selected

SPCLFUNC parameters. Set the DIP Switch in the OFF position to display all parameters.

DIP Switch #3 selects tenths of units displayed for process inputs.

DIP Switch #4 is ON for 0-5VDC/0-20mA input & OFF for 1-5VDC/4-20mA input.

DIP Switch #5 is not used. Set it to the OFF position.

DIP Switch #6 is for factory test and calibration, it must be OFF.

External Event Input

The event input allows the Series 922 to be programmed to wait at that point in the profile until a change in status of the event input occurs. It can be programmed to wait for a switch closure or opening at Terminals 22 and 24 via the

WE (wait for event) step in the WAITFOR menu.

Remote Hold Input

A contact closure across the remote hold input (terminals 22 & 24) causes the

Series 922 to pause until the switch opens. This is indicated by a flashing RUN

LED. While in this condition, the 922 actively maintains the set point and event output conditions which exist.

38


How To Program the Series 922, Chapter 6

Event Outputs

Another feature of the Series 922 is its capability for up to eight event outputs via an external event output board. You have the option of ordering your 922 without events, or adding an external board for two or eight outputs. An "event output" is simply a pre-programmed ON/OFF event per program step. The event may turn any number of peripheral devices ON or OFF to assist you in controlling your process, system or environment.

For instance, in an environmental chamber, you might wish to circulate air at a given time in your program for one or more steps. You may want to turn lights ON or OFF, or signals, lock out your humidifier, or activate a video recorder.

EV1 and EV2 are not visible under the SYSTEM menu until you select AUX1 &

AUX2 as events in the SETUP menu, and the two or eight event output board is connected.

Events/ GS

Enter the SETUP menu, and enter ACCESS (5). This is the SPCLFUNC (Special

Function) parameter. Press the MODE key until you reach the AUX1 parameter and press ENTER. The default for AUX1 and AUX2 is AL (Alarms). Change the value to EV (Events) if it hasn't already been done.

If you return to the SYSTEM menu, EV1 and EV2 are visible, and can be turned

ON or OFF from here. EV1 and EV2 can also be viewed under the SETPOINT parameter in the PROGRAM menu. EV3 through EV8 are not displayed unless you have the 8 event output board connected. See the Model Number Information on Page 70 for ordering information.

If the events are programmed for one step and left unprogrammed for the next step, the events maintain the last programmed status. These event outputs are solid state relays rated at 0.5 amps up to 240VAC.

Guaranteed Soak

The Series 922 Guaranteed Soak (GS) feature insures that the process temperature tracks a programmed ramp. The Guaranteed Soak acts as a deviation alarm.

The program clock halts if the ACTUAL temperature exceeds the Guaranteed Soak value. At this time the HOLD LED flashes. The clock starts once the process variable is within the GS deviation value. Programmed in degrees or process units,

GS is in the SETUP menu under ACCESS (5). Entering a value of (0) disables the

Guaranteed Soak function. The Guaranteed Soak function only applies to

Channel 1. Figure 30 is an example of the Guaranteed Soak function.

Figure 30 -

Guaranteed Soak

(GS) Example

Programmed Ramp

Temperature

Guaranteed Soak

Window Around

Set Point

NOTE: If the program is put in the

HOLD mode while holding for a guaranteed soak, and restarted at another step, the GS has to be met for the previous step, before the program can continue.

Time



39

Jumploops

The Four JUMPLOOP Types

The Series 922 gives you the capability to perform four basic jumploop types in your programming. The backward jump, forward jump, nested loops, and intertwining loops. These are only definitions of the four loops. The Series

922 has very few rules concerning loops in your program.

Backward Jump

The Backward jump is the most common jump. A backward jump will force you to a step already performed. The Jump Step (JS) must be less than the current step. You cannot JUMPLOOP to the step that you are on.

Step 2

Step 3

Step 4

Step 5

Step 6

SETPOINT

SETPOINT

SETPOINT

JUMPLOOP

STOP

JS - 02

The steps in sequence will be: 2, 3, 4, 5, 2, 3, 4, 5, 6.

JC - 01

Your Jump Count (JC) can be anything from 0 - 100. If you enter 0, this will be an infinite loop and will never progress to Step 6.

Forward Jump

The next loop type is a Forward jump. By definition you can jump forward.

The Jump Step must be greater than this step.

Step 1

Step 2

Step 3

Step 4

Step 5

SETPOINT

SETPOINT

JUMPLOOP

SETPOINT

STOP

JS - 05 JC - 01

The steps in sequence will be: 1, 2, 3, 5.

40



Nested Loop

A "Nested" loop is a jump loop within a loop. You are forced to a step either forwards or backwards from your present location. When nested loops are performed, they cannot break across other loops. Your JC can be from 0 - 100 with 0 being an infinite looping.

Jumploops

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

SETPOINT

SETPOINT

JUMPLOOP JS - 02

JUMPLOOP JS - 01

SETPOINT

JUMPLOOP JS - 01

STOP

JC - 01

JC - 01

JC - 01

The steps in sequence will be: 1, 2, 3, 2, 3, 4, 1, 2, 3, 2, 3, 4, 5, 6, 1, 2, 3, 2, 3,

4, 1, 2, 3, 2, 3, 4, 5, 6, 7.

Intertwined Loop

An "Intertwined" loop can break across other loops.

Step 1

Step 2

Step 3

Step 4

Step 5

SETPOINT

SETPOINT

JUMPLOOP JS - 01

JUMPLOOP JS - 02

STOP

JC - 01

JC - 01

The steps in sequence will be: 1, 2, 3, 1, 2, 3, 4, 2, 3, 1, 2, 3, 4, 5.

Rules to Follow

The one basic rule that you must follow is that you can only have a maximum of three consecutive jump loops.

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

SETPOINT

JUMPLOOP

JUMPLOOP

JUMPLOOP

JUMPLOOP

STOP

JS - 01

JS - 01

JS - 01

JS - 01

JC - 01

JC - 01

JC - 01

JC - 01

Your program will run until it reaches Step 5, and flashes an ER2 0039. This is the infinite looping error, and means you have too many consecutive loops.

Another rule to follow is you cannot JUMPLOOP to a step you are on. You'll receive an ER2 0039. Clear the error in the ER2 parameter under the SYS-

TEM menu and retransmit your data.

Use simple loops in your program!



41

SYSTEM Menu

The next pages will show you each of the Series 922 menus and their prompts and values. Each section, SYSTEM, SETUP, and PROGRAM, has a menu graphic with a table of values, followed by prompt definitions. Don't write in the tables and charts here, but make copies to document your control.

Prompt definitions are also listed in the glossary.

Programming in General

Programming the Series 922 is easy as 1 - 2 - 3:

1. Use the MODE key to select the alphanumeric display prompt you want.

2. Use the UP/DOWN keys to select data or prompts in the alphanumeric display.

3. Press ENTER.

SYSTEM Menu

The SYSTEM mode has the capability to generate a non-ramping set point and manipulate events. You can also clear alarms and error codes from this menu.

Step through the SYSTEM menu using the key flow diagram and table below.

Graphics Key

M

E

= MODE Key

= ENTER Key

= UP/DOWN Key

NOTE: Shaded parameters may not appear on your control. These parameters are dependent on how your control is configured. See

Pages 43 - 44 for more information.

M

SYSTEM

SP1

( )

EV1

( )

Figure 31 -

SYSTEM Key Flow

EV3

EV4

EV5

EV6

EV7

EV8

EI

( )

( )

ER1

ER2

( )

( )

CLR ALARM

RETURN

( )

( )

( )

( )

To SYSTEM

42


SYSTEM,

or press to return to the first parameter.


Table 8 -

SYSTEM Prompts and

Description

SYSTEM

Prompt Description

Make photocopies, keep original clean.

Range

SYSTEM Menu

Default

SP1

SP2

C2/RH

EV1

EV2

EV3

EV4

EV5

EV6

EV7

EV8

Monitor/Enter CH 1 Fixed Set Point value.

Monitor/Enter CH 2 Fixed Set Point value.

Dependent on "TYP" under SPCLFUNC.

Displays CH 2 actual process variable.

Dependent on "TYP" under SPCLFUNC.

Monitor/Enter the Event Output 1 status.

Dependent on AUX1 = EV & output board.


Dependent on AUX2 = EV & output board.


Dependent on 8 event output board.











TEMP: R1L and R1H 73°F/23°C

PROC: A1L and A1H 73.4°F/23.0°C

TEMP: R2L and R2H

PROC: A2L and A2H

--

OFF or ON

OFF or ON

OFF or ON

OFF or ON

OFF or ON

OFF or ON

OFF or ON

OFF or ON

EI

ER1

ER2

Displays status of the external event input.

Displays/Clears the most recent fatal error.

Displays the most recent nonfatal error.

CLR ALARM Displays the current alarm.

OPEN or CLOSE

0 - 18

0 - 40

1 High, 1 Low

2 High, 2 Low

RETURN Press the ENTER key to return to the

SYSTEM prompt.

Press the MODE key to return to the

SP1 prompt.

73°F/23°C

73.4°F/23.0°C

--

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

Open

-

-

-

Your Settings

Shaded parameters may not appear on your control. They are dependent on your control configuration.

SYSTEM

SP1 ( )

SP2 ( )

C2/RH

One of three main level operating menus. From the SYSTEM menu, you can generate a non-ramp set point (fixed), manipulate Events 1 through 8 ON or OFF, clear system errors, and clear latching alarms.

Represents the current set point for Channel 1.

Range: R1L and R1H

Default: 73°F/23°C (whole) 73.4°F/23.0°C (tenths)

Represents the current set point for Channel 2. SP2 will not appear if TYP, under the

SPCLFUNC menu, is set up for "T" (Temperature for Channel 1 only) or for "P" (Process for Channel 1 only).

Range: R2L and R2H

Default: 73°F/23°C (whole) 73.4°F/23.0°C (tenths)

Represents the current value of the process variable from the sensor inputs for Channel

2. C2 will not appear if TYP, under the SPCLFUNC menu, is set up for "T" (Temperature for Channel 1 only) or "P" (Process for Channel 1 only). RH only appears if TYP =

T H, T V, or P V.



43

SYSTEM Menu

EV1 ( )

EV2 ( )

This auxiliary output can be an alarm or event. Events may be turned ON or OFF in the

HOLD mode. EV1 will only appear when AUX1 = EV, under the SPCLFUNC menu, and when the external event output board is connected.

Range: OFF or ON Default: OFF

This auxiliary output can be an alarm or event. Events may be changed ON or OFF in the HOLD mode. EV2 will only appear when AUX2 = EV, under the SPCLFUNC menu, and when the external event output board is connected, or when TYP = "T" or "P" and an external event board is connected.


These auxiliary outputs are events. Events may be turned ON or OFF in the HOLD mode. EV3 through EV8 only appear when the 8 event output, external board is connected.


EV3 ( )

EV4 ( )

EV5 ( )

EV6 ( )

EV7 ( )

EV8 ( )

EI

ER1 ( )

ER2 ( )

CLR ALARM

RETURN

EI monitors the status of the external event input. OPEN will be displayed if the external event input is open, or will display CLOSE if terminals 22 and 24 are tied together. This is a switch input, not voltage or current.

Range: OPEN or CLOSE Default: OPEN if nothing is connected to the input.

ER1 is considered a fatal error; your system will shut down. When the Series 922 shuts down, all outputs will be turned off, and the program will stop running. When an error occurs, ER1 00XX will alternately flash with the SYSTEM parameter. To clear an error,

ENTER the SYSTEM mode, and scroll to the ER1 parameter. Press ENTER. This clears the error unless it is a re-occuring error and has not been resolved. Some ER1 errors are self clearing.

Range: 0 - 18

ER2 is considered nonfatal. If you are in the RUN mode, your program will continue running unless it is a program error. ER2 00XX appears, and flashes alternately along with the parameter that you are on. To clear an ER2, return to the ER2 parameter under the SYSTEM mode. Press ENTER. If the error persists, refer to the Error Code list at the end of the manual to clear.

Range: 0 - 40

Alarms 1 and 2 are considered nonfatal. If you are in the RUN mode, your program will continue to run. ALMX XX appears and flashes alternately with the parameter you are presently on. ENTER the CLR ALARM parameter to clear a latching alarm. A nonlatching alarm clears itself once it falls within the alarm limits.

Range: 1 High, 1 Low, 2 High, 2 Low

From any RETURN, you can go back to SYSTEM prompt.

44



SETUP

SETUP Menu

While in the HOLD mode, press the MODE key until you see SETUP, press ENTER. These parameters are to setup the personality of your

Series 922. Using the MODE to progress through the prompts, use the UP/

DOWN keys to select parameters and values and press ENTER.

Select each ACCESS number. Follow that parameter sequence to enter values. You must return to SYSTEM before you can continue to the next

ACCESS number.

Graphics Key

Figure 32 -

SETUP Key Flow

M

E

= MODE Key

= ENTER Key

= UP/DOWN Key

S E T U P

SETUP Menu

NOTE: Shaded parameters may not appear on your control. These parameters are dependent on how your control is configured. See

Pages 46 - 56 for more information.

ACCESS

(0 )

CALIB

TI 00 : 00

HOUR

( )

MIN

( )

CAL1

( )

CAL2

( )

A1H

( )

A1L

( )

A2H

( )

A2L

( )

RETURN

To SYSTEM

ACCESS (1 )

PID

CH

CH 1

PB1H

RS1H

( )

( )

RT1H

CT1H

( )

( )

RB1H

DB1

( )

( )

PB1C

RS1C

( )

( )

RT1C

CT1C

( )

( )

RB1C

( )

RETURN

Press to return to SYSTEM,

or

( )

NOTE:

Select 1 or 2.

CH 2

PB2H

RS2H

( )

( )

RT2H

CT2H

( )

( )

RB2H

DB2

( )

( )

PB2C

RS2C

( )

( )

RT2C

CT2C

( )

( )

RB2C

( )

RETURN


ACCESS (3 )

DIAGNOS

MAN1

( )

MAN2

( )

C2/RH

( )

RETURN

ACCESS (5 )

SPCLFUNC

C/F/U

( )

TYP

( )

OUT1

( )

OUT2

( )

R1L

( )

R1H

( )

R2L

( )

R2H

( )

AUX 1

( )

AUX 2

( )

ALTYP 1

( )

ALTYP 2

( )

LAT

( )

RTD

( )

ALT

( )

GS

( )

ANLG

( )

SCALE

( )

COM

( )

BAUD

( )

COM ID

( )

LOCK

( )

CLR FILE

RETURN


45

SETUP Menu


SETUP


ACCESS = (0) CALIB

To enter CALIB parameters use ACCESS (0) and ENTER.

TI XX:XX Read only. Displays the Real Time. HH:MM

HOUR

MIN

CAL1

Enter the hours to display the system time-of-day clock.

Enter the minutes to display the system time-of-day clock.

Enter the Calibration Offset value for Channel 1.

Range

0-23 hours

0-59 minutes

-90 to 90°F/-50 to 50°C

-9.0 to 9.0°F/-5.0 to 5.0°C/U

-90 to 90°F/-50 to 50°C

-9.0 to 9.0°F/-5.0 to 5.0°C/U

CAL2

A1H

A1L

A2H

Enter the Calibration Offset value for Channel 2.

Dependent on TYP parameter.

Enter the Alarm 1 High value. Displayed if AUX1 = AL.

Dependent on AUX1 and ALTYP1 parameters.

Enter the Alarm 1 Low value. Displayed if AUX1 = AL.

Dependent on AUX1 and ALTYP1 parameters.

Enter the Alarm 2 High value. Displayed if AUX2 = AL.

Dependent on AUX2, ALTYP2, and TYP parameters.

A2L Enter the Alarm 2 Low value. Displayed if AUX2 = AL.

Dependent on AUX2, ALTYP2, and TYP parameters.

RETURN Press the ENTER key to return to the SYSTEM prompt.

Press the MODE key to return to the CALIB prompt.

See below.

See below.

See below.

See below.

Table 9 -

SETUP Prompts and

Description.

Default Your Settings

0

0

0

0

Range

AXH J

K

Process Default Deviation Default

& High Slew Limit

1382°F/750°C

2282°F/1250°C

999°F/555°C/U

999°F/555°C/U

T

% RH

662°F/350°C

100%

999°F/555°C/U

555

RTD Whole 1112°F/600°C 999°F/555°C/U

RTD Tenths 392.0°F/200.0°C 999°F/555°C/U

0 - 5 Whole 1985°F/1985°C 999°F/555°C/U

0 - 5 Tenths 198.5°F/198.5°C 999°F/555°C/U

4 - 20 Whole 1985°F/1985°C 999°F/555°C/U

4 - 20 Tenths 198.5°F/198.5°C 999°F/555°C/U

Range

AXL J

K

Process Default Deviation Default

& Low Slew Limit

32°F/0°C -999°F/-555°C/U

-328°F/-200°C/U -999°F/-555°C/U

T

% RH

-328°F/-200°C

0%

-999°F/-555°C/U

-555

RTD Whole -328°F/-200°C -999°F/-555°C/U

RTD Tenths -99.9°F/-99.9°C -999°F/-555°C/U

0 - 5 Whole -117°F/-117°C -999°F/-555°C/U

0 - 5 Tenths -11.7°F/-11.7°C

4 - 20 Whole -285°F/-285°C

4 - 20 Tenths -28.5°F/-28.5°C

-999°F/-555°C/U

-999°F/-555°C/U

-999°F/-555°C/U


ACCESS = (1) PID

To enter PID parameters, use ACCESS (1) & press ENTER.

CH1

PB1H

RS1H

RT1H

CT1H

RB1H

DB1

Enter the Channel 1 Proportional Band value, Heating.

Enter the Channel 1 Reset value, Heating.

Not displayed if PB1H = 0.

Enter the Channel 1 Rate value, Heating.


Enter the Channel 1 Cycle Time value, Heating.

Not displayed if PB1H = 0. Dependent on output & OUT1.

Enter the Channel 1 Rate Band value, Heating.


0 denotes rate is always functional.

Enter the Current Dead Band value for Channel 1.

Range Default

0-900°F/0-500°C/0-500Units 45°F/25°C/25U

0.00 - 5.00 repeats/minute 0.00

0.00 - 5.00 minutes

1 - 60 seconds

0 - 7 times PB1H

0.00

5

0

-36 to 36°F/-20 to 20°C

-20 to 20 Units

0

0-900°F/0-500°C/0-500Units 45°F/25°C/25U

0.00 - 5.00 repeats/minute 0.00

PB1C

RS1C

Enter the Channel 1 Proportional Band value, Cooling.

Enter the Channel 1 Reset value, Cooling.

Not displayed if PB1C = 0.

RT1C

CT1C

Enter the Channel 1 Rate value, Cooling.


Enter the Channel 1 Cycle Time value, Cooling.

Not displayed if PB1C = 0. Dependent on output &OUT1.

Enter the Channel 1 Rate Band value, Cooling.

RB1C




Press the MODE key to return to the PID prompt.

0.00 - 5.00 minutes

1 - 60 seconds

0 - 7 times PB1C

0.00

5

0

Your Settings

46



SETUP Menu

Table 9 continued


ACCESS = (1) PID Continued

To enter PID parameters, use ACCESS (1) & press ENTER.

CH2

PB2H

RS2H

RT2H

CT2H

RB2H

Enter the Channel 2 Proportional Band value, Heating.


Enter the Channel 2 Reset value, Heating.

Not displayed if PB2H = 0. Dependent on TYP parameter.

Enter the Channel 2 Rate value, Heating.


Enter the Channel 2 Cycle Time value, Heating.


Dependent on output, TYP & OUT2.

Enter the Channel 2 Rate Band value, Heating.


DB2

PB2C

RS2C

RT2C


Enter the Current Dead Band value for Channel 2.


Enter the Channel 2 Proportional Band value, Cooling.


Enter the Channel 2 Reset value, Cooling.

Not displayed if PB2C = 0. Dependent on TYP parameter.

Enter the Channel 2 Rate value, Cooling.


Enter the Channel 2 Cycle Time value, Cooling.

CT2C

RB2C


Dependent on output, TYP & OUT2.

Enter the Channel 2 Rate Band value, Cooling.




Press the MODE key to return to the PID prompt.

Range

0.00 - 5.00 repeats/minute

0.00 - 5.00 minutes

1 - 60 seconds

0 - 7 times PB2H

-36 to 36°F/-20 to 20°C

-20 to 20 Units

0-900°F/0-500°C/0-500U

0.00 - 5.00 repeats/minute

0.00 - 5.00 minutes

1 - 60 seconds

0 - 7 times PB2C

Default

0-900°F/0-500°C/0-500Units 45°F/25°C/25U

0.00

0.00

5

0

0

45°F/25°C/25U

0.00

0.00

5

0

Your Settings


ACCESS = (3) DIAGNOS

To enter DIAGNOS parameter, use ACCESS (3) and press ENTER.

MAN1

MAN2

Enter % power output for Channel 1.

Enter % power output for Channel 2.

C2/RH


Displays Channel 2 ACTUAL temperature/humidity.


Press the MODE key to return to the DIAGNOS prompt.

NOTE:

Positive % always refers to the heat output, and

Negative % refers to the cool output.

Range

-100 to 100%

-100 to 100%

R2L to R2H

Default

- -

- -

- -

Your Settings



47

SETUP Menu

NOTE: Changing these parameter values will default other parameters and clear all files. See Page 53 & 54 for details.

Table 9 continued


Prompt Description Range Default

ACCESS = (5) SPCLFUNC

To enter SPCLFUNC parameter, use ACCESS (5) and press ENTER.

C/F/U Enter the unit of measure code. (Celcius/Fahrenheit/Units)

TYP

OUT1

Not displayed if DIP Switch #2 is ON.

Enter actual process display to be shown.

Temperature/Process/Humidity

Dual T/C

Dual RTD

Dual RTD 0.1

0.1 RTD, Process

T/C, Process

RTD, Process

Dual Process


Enter the control output for Channel 1, Outputs 1 and 2.

C/F/U

T T or T

T T or T H or T

T T or T H or T

T P or T V or T

T P or T V or T

T P or T V or T

P P or P V or P

F

T T

T T

T T

T P

T P

T P

P P

OUT2

Heat PID/Cool PID

Cool PID/Heat PID


Enter the control output for Channel 2, Outputs 3 and 4.

Heat PID/Cool PID

HTCL

CLHT

HTCL

R1L

R1H

R2L

R2H

AUX1

Cool PID/Heat PID

Not displayed if DIP Switch #2 is ON. Dependent on TYP.

Enter the Range Low value for Channel 1.

Not displayed is DIP Switch #2 is ON.

Enter the Range High value for Channel 1.


Enter the Range Low value for Channel 2.


HTCL

CLHT

HTCL

Dependent on input selection.

See your TYP parameter setting.





Enter the Range High value for Channel 2.




AL Enter the Auxiliary Output 1.

AUX1 AL

AUX 1 EV

Alarm output

Event output

Not displayed if DIP Switch #2 is ON. Dependent on event board.

AUX2 Enter the Auxiliary Output 2.

AUX2 AL

AUX2 EV

Alarm output

Event output

Not displayed if DIP Switch #2 is ON. Dependent on TYP & event board.

ALTYP1 Enter Alarm Type 1.

ALTYP1 P Process alarm

ALTYP1 D Deviation alarm

Not displayed if DIP Switch #2 is ON. Dependent on AUX1 & event board.

ALTYP2 Enter Alarm Type 2.

ALTYP2 P Process alarm

AL

P

P

LAT

RTD

ALTYP2 D Deviation alarm

Not displayed if DIP Switch #2 is ON Dependent on AUX2, TYP & event board.

Enter the Alarm function type.

LAT or NLAT


Enter input gain of RTD input channels for different curves.

JIS or DIN

NLAT

JIS

ALT

GS

ANLG

SCALE

COM

Not displayed if DIP Switch #2 is ON. Dependent on input.

Set altitude in feet for humidity mode.

Not displayed if DIP Switch #2 is ON. Dependent on input.

Enter the Guaranteed Soak.

Enter parameter the Analog retransmit signal represents.

Enter millivolts to scale analog retransmit output.

Select between XON/XOFF or ANSI X3.28 protocol.

Dependent on communications capability.

0, 2500, 5000

0 - 50°C

C1, C2, SP1, SP2

1, 2, 5, 10

XON or STX

BAUD Select baud rate for serial communications to run at.

Dependent on communications capability.

1200, 2400,

4800, 9600

0 - 9 COM ID Enter the Communications protocol Identification.

Dependent on communications capability and COM = STX.

Enter the Front panel Lock code.

LOCK 0 - 2

CLR FILE Press ENTER to display FILE?. Enter a file number to clear.

1 - 10


Press the MODE key to return to the SPCLFUNC prompt.

0

0

C1

1

STX

1200

0

0

1

Your Settings

48



SETUP


SETUP

ACCESS (0 )

CALIB

SETUP Menu

One of three main level operating menus. From the SETUP menu, you can set up or change system-operating parameters such as real time, high/low range, alarm types, alarm points, PID settings and communications. You must select each ACCESS number to create the personality of your Series 922.

ACCESS number (0) must be selected to enter the personality of your

Series 922 into the CALIB parameters.

In the Series 922, when ACCESS (0) is entered under the SETUP menu, the CALIB parameters appear. These parameters setup the Real Time and the calibration offset of the process variable.

TI 00 : 00

HOUR ( )

MIN

( )

CAL1

( )

CAL2 ( )

A1H ( )

A1L ( )

A2H ( )

Represents the current Real Time hours and minutes of the Series 922's

System. Midnight = 0 hours and 0 minutes. Read only parameter.

Represents the SYSTEM 24 hour time-of-day clock for hours.

Range: 0 to 23 hours Default: 0

The SYSTEM 24 hour time-of-day clock setting for minutes.

Range: 0 to 59 minutes Default: 0

An offset of the process variable for Channel 1. This number is added to the value that the system derives. The final result is used for the control point.

Range: -50 to 50 units or °C (-5.0 to 5.0 for tenths), or -90 to 90°F

(-9.0 to 9.0 for tenths).

Default: 0

An offset of the process variable for Channel 2. This number is added to the value that the system derives. The final result is used for the control point. CAL2 will not appear if TYP, under the SPCLFUNC menu, is set up for "T" (Temperature for Channel 1 only) or for "P" (Process for

Channel 1 only).

Range: -50 to 50 units or °C (-5.0 to 5.0 for tenths), or -90 to 90°F (-9.0 to

9.0 for tenths).

Default: 0

When AUX1 = AL and an external event board is connected, the Series

922 will display this parameter representing the high process alarm or high deviation alarm for Output 1. ALTYP1 parameter selects a process or deviation alarm.

Process Range: R1L to R1H (R1L-10% to R1H +10%)

Process Default: R1H (R1H +10%)

Deviation Range: 0 to 999°F/0 to 555°C Deviation Default: 999/555

This parameter represents the low process alarm or low deviation alarm for Output 1 of the Series 922. Displayed only when AUX1 = AL and an external event board is connected. ALTYP1 parameter selects a process or deviation alarm.

Process Range: R1L to R1H (R1L -10% to R1H +10%)

Process Default: R1L (R1L -10%)

Deviation Range: -R1H (or -555°C / -55.5°C / -999 F/U / -99.9 F/U) to 0

Deviation Default: Low end value

Represents the high process alarm or high deviation alarm for Output 2 of the Series 922. Displayed only when AUX2 = AL and an external event board is connected. ALTYP2 parameter selects a process or deviation alarm. This parameter will not appear if TYP, under the SPCLFUNC menu, is set to "T" (Temperature for Channel 1 only) or "P" (Process for

Channel 1 only).


Process Default: R2H (R2H +10%)

Deviation Range: 0 to 999°F/0 to 555°C Deviation Default: 999/555



49

SETUP Menu

A2L ( )

RETURN

ACCESS (1)

PID

CH1

PB1H ( )

RS1H ( )

RT1H ( )

CT1H ( )

RB1H ( )

The low process alarm or low deviation alarm for Output 2 of the Series 922.

Displayed only when AUX2 = AL and an external event board is present.

ALTYP2 parameter selects a process or deviation alarm. This parameter will not appear if TYP, under the SPCLFUNC menu, is set to "T" (Temperature for

Channel 1 only) or "P" (Process for Channel 1 only).


Process Default: R2L (R2L -10%)

Deviation Range: -R2H (or -555°C / -55.5°C / -999°F/U / -99.9 F/U) to 0

Deviation Default: Low end value

From RETURN, you can go back to the SYSTEM prompt by pressing the

ENTER key, or return to ACCESS ( 0 ) menu by pressing the MODE key.

In the SETUP menu, ACCESS ( 1 ) must be selected to enter the PID parameters.

When ACCESS (1) is entered under the SETUP menu of the Series 922, the

PID parameters will appear. These parameters consist of Proportional,

Integral (auto reset), and Derivative (rate) actions. Choose between CH1 or

CH2 (Channel 1, Channel 2). If "T" or "P" have been entered in the TYP parameter under the SPCLFUNC menu, Channel 2 will not appear.

Range: CH1 - CH2 Default: CH1

A proportional temperature band expressed in degrees, within which a temperature controller proportioning function is active for Channel 1 heating.

Expressed in degrees.

Range: 0 to 900°F / 0 to 500°C / 0 to 500 Units; 0.0 to 90.0°F / 0.0 to 50.0°C

/ 0.0 to 50.0 Units.

Default: 45°F / 25°C / 25 Units; 4.5°F / 2.5°C / 2.5 Units

A reset (integral) heating control action for Channel 1 that automatically eliminates offset, or "droop," between set point and actual process temperature in a proportional control. Expressed by repeats per minute. This parameter will not appear if PB1H is set to 0.

Range: 0.00 to 5.00 repeats/minute

Default: 0.00

The rate (derivative) heating function for Channel 1 of the Series 922. The rate is determined by how fast the error being corrected is increasing. Expressed in minutes. This parameter will not appear if PB1H is set to 0.

Range: 0.00 to 5.00 minutes

Default: 0.00

The Channel 1 heating cycle time usually expressed in seconds for a controller to complete one ON/OFF cycle. Time between successive turn ons. This parameter will not appear if: Your Series 922 has a 4-20mA output and OUT1 under the SPCLFUNC menu is set to HTCL, or PB1H is set to 0.

Range: 1 to 60 seconds

Default: 5

A thermal control band for Channel 1 heating, that defines where the rate

(derivative) function begins. This band is in multiples of the heat proportional band. This parameter will not appear if PB1H is set to 0.

Range: 0 to 7 times the PB1H, (0 denotes rate is always functional.)

Default: 0

50



DB1 ( )

PB1C ( )

RS1C ( )

RT1C ( )

CT1C ( )

RB1C ( )

RETURN

PID

CH2 ( )

PB2H ( )

SETUP Menu

The area for Channel 1 where no heating or cooling takes place in a heat/cool proportional control.

Range: -36 to 36°F / -20 to 20°C / -20 to 20 Units; -3.6°F / -2.0 to

2.0°C / -2.0 to 2.0 Units.

Default: 0

A temperature band expressed in degrees within which a temperature controller proportioning function is active for Channel 1 cooling.

Range: 0 to 900°F / 0 to 500°C / 0 to 500 Units; 0.0 to 90.0°F / 0.0 to

50.0°C / 0.0 to 50.0 Units.

Default: 45°F / 25°C / 25 Units; 4.5°F / 2.5°C / 2.5 Units

Reset (integral) cooling control action for Channel 1 that automatically eliminates offset, or "droop", between set point and actual process temperature in a proportional control. Expressed in repeats per minute. This parameter will not appear if PB1C is set to 0.

Range: 0.00 to 5.00 repeats/minute

Default: 0.00

The rate (derivative) cooling function for Channel 1 of the Series 922.

The rate is determined by how fast the error being corrected is increasing. Expressed in minutes. This parameter will not appear if

PB1C is set to 0.

Range: 0.00 to 5.00 minutes

Default: 0.00

The cooling cycle time for Channel 1 expressed in seconds for a controller to complete one ON/OFF cycle. Time between successive turn ons. This parameter will not appear if: Your Series 922 has a 4-

20mA output and OUT1 under the SPCLFUNC menu is set to CLHT, or PB1C is set to 0.

Range: 1 to 60 seconds

Default: 5

A thermal control band for Channel 1 cooling that defines where the rate (derivative) function begins. This band is in multiples of the cool proportional band. This parameter will not appear if PB1C is set to 0.

Range: 0 to 7 times the PB1C (0 denotes rate is always functional)

Default: 0

From RETURN, you can go back to the SYSTEM prompt by pressing the ENTER key, or return to PID by pressing the MODE key.

Under the PID menu, Channel 2 can be selected. These parameters consist of Proportional, Integral (auto reset), and Derivative (rate) actions. If "T" (Temperature for Channel1 only) or "P" (Process for

Channel 1 only) have been entered in the TYP parameter under the

SPCLFUNC menu, Channel 2 will not appear.

Range: CH1 - CH2 Default: CH1

A proportional temperature band expressed in degrees, within which a temperature controller proportioning function is active for Channel 2 heating. Expressed in degrees. This parameter will not appear if "T" or "P" (Channel 1 only) have been selected in the TYP parameter under the SPCLFUNC menu.

Range: 0 to 900°F / 0 to 500°C / 0 to 500 Units; 0.0 to90.0°F / 0.0 to

50.0°C / 0.0 to 50.0 Units / 0 to 500%RH.

Default: 45°F / 25°C / 25 Units; 4.5°F / 2.5°C / 2.5 Units / 25%RH.



51

SETUP Menu

RS2H ( )

RT2H ( )

CH2H ( )

RB2H ( )

DB2 ( )

PB2C ( )

RS2C ( )

RS2C ( )

A reset (integral) heating control action for Channel 2 that automatically eliminates offset, or "droop", between point and actual process temperature in a proportional control. Expressed by repeats per minute. This parameter will not appear if PB2H is set to 0, or if "T" or

"P" have been selected in TYP under the SPCLFUNC parameter.

Range: 0.00 to 5.00 repeats/minute Default: 0.00

The rate (derivative) heating function for Channel 2 of the Series 922.


PB2H is set to 0.

Range: 0.00 to 5.00 minutes Default: 0.00

The Channel 2 heating cycle time usually expressed in seconds for a controller to complete one ON/OFF cycle. Time between successive turn ons. This parameter will not appear if: Your Series 922 has a 4-

20mA output and OUT2 under the SPCLFUNC menu is set to HTCL,

PB2H is set to 0, or you have selected "T" or "P" (Channel 1 only) in the TYP parameter under the SPCLFUNC menu.

Range: 1 to 60 seconds Default: 5

A thermal control band for channel 1 heating, that defines where the rate (derivative) function begins. This band is in multiples of the heat proportional band. This parameter will not appear if PB2H is set to 0, or "T" or "P" (Channel 1 only) in the TYP parameter under the

SPCLFUNC menu have been selected.

Range: 0 to 7 times the PB2H, (0 denotes rate is always functional)

Default: 0

The area for Channel 2 where no heating or cooling takes place in a heat/cool proportional control. This parameter will not appear if "T" or

"P" (Channel 1 only) have been selected in the TYP parameter under the SPCLFUNC menu.

Range: -36 to 36

°

F / -20 to 20

°

C / -20 to 20 Units; -3.6 to 3.6

°

F / -

2.0 to 2.0

°

C / -2.0 to 2.0 Units / -20 to 20%RH.

Default: 0

A temperature band expressed in degrees within which a temperature controller proportioning function is active for Channel 2 cooling. This parameter will not appear if "T" or "P" (Channel 1 only) have been selected in the TYP parameter under the SPCLFUNC menu.

Range: 0 to 900

°

F / 0 to 500

°

C / 0 to 500 Units; 0.0 to 90.0

°

F / 0.0

to 50.0

°

C / 0 to 50.0 Units / 0 to 500%RH.

Default: 45

°

F / 25

°

C / 25 Units; 4.5

°

F / 2.8

°

C / 2.5 Units / 25% RH.

Reset (integral) cooling control action for Channel 2 that automatically eliminates offset, or "droop", between set point and actual process temperature in a proportional control. Expressed in repeats per minute. This parameter will not appear if PB2C is set to 0, or "T" or "P" (Channel 1 only) in the TYP parameter under the SPCLFUNC menu have been selected.

Range: 0.00 to 5.00 repeats/minute Default: 0.00

The rate (derivative) cooling function for Channel 2 of the Series 922.


PB2C is set to 0, or if "T" or "P" (Channel 1 only) in the TYP parameter under the SPCLFUNC menu have been selected.

Range: 0.00 to 5.00 minutes Default: 0.00

52



The cooling cycle time for Channel 2 expressed in seconds for a controller to complete one ON/OFF cycle. Time between successive turn ons. This parameter will not appear if: Your Series 922 has a 4-20ma output and OUT2 under the SPCLFUNC menu is set to CLHT, PB2C is set to 0, or "T" or "P"

(Channel 1 only) in the TYP parameter under the SPCLFUNC menu has been selected.

Range: 1 to 60 seconds Default: 5

A thermal control band for Channel 2 cooling that defines where the rate

(derivative) function begins. This band is in multiples of the cool proportional band. This parameter will not appear if PB2C is set to 0, or "T" or "P" (Channel

1 only) in the TYP parameter under the SPCLFUNC menu has been selected.

Range: 0 to 7 times the PB2C (0 denotes rate is always functional)

Default: 0

From any RETURN, you can go back to the SYSTEM prompt by pressing the

ENTER key, or return to PID by pressing the MODE key.

In the SETUP menu, ACCESS (3) must be selected to enter the DIAGNOS parameters. Here you can manually adjust percent power for Channel 1 and 2.

When ACCESS (3) is selected under the SETUP mode of the Series 922, the

DIAGNOS parameters appear. The outputs will revert to (open loop) manual percent power control at the percent of power that they happen to be at before entering the DIAGNOS menu. The control will revert back to a closed loop control when you leave the DIAGNOS menu.

Allows the operator to manually adjust the percent power output for Channel 1.

If set to 100, the heat output for Channel 1 is full ON.

Range: -100 to 100

Default: % power unit was at when DIAGNOS was entered.

Allows the operator to manually adjust the percent power output for Channel 2.

This parameter will not appear if the TYP prompt has been set to "T" (Temperature for Channel 1 only) or "P" (Process for Channel 1 only). If set to 100, the heat output for Channel 2 is full ON.

Range: -100 to 100

Default: % power unit was at when DIAGNOS was entered.

Channel 2 ACTUAL temperature/humidity.

Range: R2L to R2H Default: Unprogrammed

From RETURN, you can go back to the SYSTEM prompt by pressing the

ENTER key, or return to ACCESS (3) menu by pressing the MODE key.

In the SETUP menu, ACCESS (5) must be selected to enter the SPCLFUNC parameters.

When ACCESS (5) is selected under the SETUP mode of the Series 922, the

Special Function (SPCLFUNC) parameters appear. Here you can select the degrees, output type, auxiliary, and alarm types among others.

Accepts the sensor input and scales it to degrees Celsius, Fahrenheit, or Units of measure depending on the input type selected and the C/F/U selection made. This prompt will not appear if DIP switch #2 is ON. Changing this

parameter defaults parameters SP1, A1L, A1H, and clears all files.

Range: C, F, or U Default: F

SETUP Menu

CT2C ( )

RB2C ( )

RETURN

ACCESS(3 )

DIAGNOS

MAN1 ( )

MAN2 ( )

C2/RH ( )

RETURN

ACCESS(5 )

SPCLFUNC

C/F/U ( )



53

SETUP Menu

TYP ( )

OUT1 ( )

OUT2 ( )

R1L ( )

R1H ( )

R2L ( )

R2H ( )

Allows the operator to configure the unit to the type of actual process display to be shown. This also affects the number of channels. This parameter will not appear if DIP Switch #2 is ON. Changing this

parameter defaults all parameters and clears all files.

Range: Dependent on input board type as follows:

T = Temperature H = Humidity P = Process

V = Vaisala RH sensor (HMM 30C)

Dual T/C T T, T

Dual RTD

Dual RTD 0.1

T T,

T T,

0.1 RTD, Process T P

T H,

T H,

T V

T

T

T

T/C, Process

RTD, Process

T P,

T P,

T V

T V

T

T

Dual Process P P, P V P

Default: The first column entry of the above board types.

Select an output type for Channel 1. Action in response to the difference between set point and process variable. This parameter will not appear if DIP Switch #2 is ON.

Range:

Alpha Display

OUT1HTCL

Output 1

Heat PID

Output 2

Cool PID

OUT1CLHT

Default: HTCL

Cool PID Heat PID

Select an output type for Channel 2. Action in response to the difference between set point and process variable. This parameter will not appear if the TYP parameter has been set to "T" (Temperature for

Channel 1 only) or "P" (Process for Channel 1 only) under the TYP parameter, or DIP Switch #2 is ON.

Range:

Alpha Display Output 3 Output 4

OUT2HTCL

OUT2CLHT

Default: HTCL

Heat PID

Cool PID

Cool PID

Heat PID

Represents a low limit to set point for Channel 1. The default values are also the low limits of your input type. This prompt will not appear if

DIP Switch #2 is ON. Changing this parameter defaults parameters

SP1, A1L, A1H, and clears all files.

Represents a high limit to set point for Channel 1. The default values are also the high limits of your input type. This prompt will not appear if

DIP Switch #2 is ON. Changing this parameter defaults parameters

SP1, A1L, A1H, and clears all files.

Represents the low limit to set points associated with Channel 2.

Default values are also the low limits of the specific input type. This parameter will not appear if the TYP parameter has been set to

"T" or "P" (Channel 1 only), or DIP Switch #2 is ON. Changing this

parameter defaults parameters SP2, A2L, A2H, and clears all files.

Represents the high limit to set points associated with Channel 2. The default values are also the high limits of the specific input type. This parameter will not appear if the TYP parameter has been set to "T" or

"P" (Channel 1 only), or DIP Switch #2 is ON. Changing this param-

eter defaults parameters SP2, A2L, A2H, and clears all files.

54



SETUP Menu

This parameter determines whether Auxiliary Output 1 will be an alarm or event output for the Series 922. This parameter will not appear if the 2 event or 8 event output board is not connected, or DIP Switch #2 is ON.

Range:

Alpha Display

AUX1 AL

AUX1 EV

Default: AL

Auxiliary Output 1's Function

Alarm Output defined for Event 1

Event Output defined for Event 1

This parameter determines whether Auxiliary Output 2 will be an alarm or event output for the Series 922. This parameter will not appear if: the external 2 event or 8 event output board is not connected; the TYP parameter has been set to

"T" or "P" (Channel 1 only), or DIP Switch #2 is ON.

Range:

Alpha Display

AUX2 AL

AUX2 EV

Default: AL

Auxilary Output 2's Function

Alarm Output defined for Event 2

Event Output defined for Event 2

Determines whether the alarm type for Auxiliary Output 1 will be a process alarm or a deviation alarm for the Series 922. This parameter will not appear if: The 2 or 8 event output board is not connected; AUX1 = EV; or DIP Switch #2 is ON.

Range:

Alpha Display

ALTYP1 P

ALTYP1 D

Default: P

Alarm Type

Process Alarm

Deviation Alarm

Determines whether the alarm type for Auxiliary Output 2 will be a process alarm or deviation alarm. This parameter will not appear if: The external 2 event or 8 event output board is not connected; if the TYP parameter has been set to "T" or "P" (Channel 1 only), or if DIP Switch #2 is ON.

Range:

Alpha Display Alarm Type

ALTYP2 P

ALTYP2 D

Default: P

Process Alarm

Deviation Alarm

Selects alarms as latching or non-latching. Latching means the alarms remain active until you manually clear it. This will not appear if DIP Switch #2 is ON.

Range: LAT or NLAT Default: NLAT

Allows the operator to change the input gain of one or both of the RTD input channels for different curves. This parameter will not appear if: The input board type is Dual T/C, T/C Process, or Dual Process, or DIP Switch #2 is ON.

Range: JIS or DIN Default: JIS

The Altitude parameter represents the setting for altitude in feet above sea level for barometric correction when in the humidity mode. This parameter only appears if the TYP parameter is set to T/H. This parameter will not appear if DIP

Switch #2 is ON.

Range: 0, 2500, 5000 Default: 0

AUX1 ( )

AUX2 ( )

ALTYP1 ( )

ALTYP2 ( )

LAT ( )

RTD ( )

ALT ( )

The Guaranteed Soak parameter guarantees the actual temperature for Channel

1 is being controlled within a window around set point while a profile is running.

If exceeded, the step time clock stops until the actual temperature is within the soak window. 0 = Guaranteed Soak is not active; >0 = Guaranteed Soak

Window (active). Only applies to Channel 1.

Range: 0 to 90

°

F / 0 to 50

°

C / 0 to 50 Units; 0 to 9.0

°

F / 0 to 5.0

°

C /

0 to 5.0 Units Default: 0


GS

( )


55

SETUP Menu

ANLG ( )

SCALE ( )

COM ( )

BAUD ( )

COM ID ( )

LOCK ( )

CLR FILE

RETURN

Allows the operator to select which parameter the analog retransmit signal represents. For a chart recorder output, select C1 or C2. For a remote set point signal (to slave controls) select SP1 or SP2. C2 and

SP2 will not appear if the TYP parameter is T or P. See SCALE parameter below for further explanation. C1 = Channel 1 actual, C2 =

Channel 2 actual, SP1 = Set point channel 1, SP2 = Set point channel 2

Range: C1, C2, SP1, SP2 Default: C1

Allows the operator to scale the analog retransmit output for a certain number of millivolts per least significant digit of the value. Reference 0 units = 0 volts.

Range: 1, 2, 5, 10mV Default: 1

Represents the selection of the protocol type for serial communications. This selects XON/XOFF protocol or ANSI X3.28 communication protocol. This parameter will not appear if your Series 922 does not have communications.

Range: XON or STX Default: STX

Represents the baud rate that serial communications will be running at.

This parameter will not appear if your Series 922 does not have communications.

Range: 1200, 2400, 4800, 9600 Default: 1200

Represents the device identification number as required for the ANSI

X3.28 communications protocol for the Series 922. This parameter will not appear if COM has been selected as XON, or if your Series 922 does not have communications.

Range: 0 to 9 Default: 0

Allows for specific groups of parameters to be unaffected by the UP/

DOWN and ENTER keys, preventing these parameters from being changed accidentally.

0 = No lock, full access of all parameters.

1 = Prevents user from editing all parameters except the SYSTEM parameter group, the LOCK parameter, and the STEP and FILE parameter in the PROGRAM and pre-run menus.

2 = Prevents user from editing all parameters except ER1, ER2, ALRM in the SYSTEM menu, the LOCK parameter, and the STEP and FILE parameter in the PROGRAM and pre-run menus.


Allows the operator to clear a file of the Series 922. Press ENTER, and choose the FILE? that you want to clear.

Range: 1 to 10

From RETURN, you can go back to the SYSTEM prompt by pressing the ENTER key, or return to SPCLFUNC by pressing the MODE key.

56



PROGRAM Menu

From the Program menu, you can create your files. There can be up to ten profiles, consisting of a total of 99 steps. You can only choose one step type per step.

PROGRAM Menu

Graphics Key

M

= MODE Key

E

= ENTER Key

= UP/DOWN Key

NOTE: Shaded parameters may not appear on your control.

These parameters are dependent on how your control is configured. See Pages 58 -

61 for more information.

NOTE: The Series 922 leaves the factory programmed for a warm start.

STOP steps will appear as a default until you program your 922.

Figure 33 -

PROGRAM Key Flow

PROGRAM

F ILE?

( )

STEP

( )

Use the to select one of the six step types. Follow that menu for your STEP [ # ].

SETPOINT

SP1

( )

SP2

( )

HOUR

( )

MIN

( )

SEC

( )

EV1

( )

EV2

( )

EV3

( )

EV4

( )

EV5

( )

EV6

( )

EV7

( )

EV8

( )

RETURN

To SYSTEM

JUMPLOOP

JS

( )

JC

( )

RETURN

WAITFOR

W1

( )

W2

( )

WHR

( )

WMN

( )

WE

( )

RETURN

AUTOSTART

DAY

( )

HOUR

( )

MIN

( )

RETURN

Press to return to SYSTEM,

STOP

RETURN

LINK

F ILE

( )

RETURN

or press to return to the file prompt.



57

PROGRAM Menu


PROGRAM


FILE?

STEP

Current system file to edit.

Select step number to view or edit. Press MODE for step-type prompt. To change step-type use the increment/decrement key and press ENTER.

Range

1 - 10

1-99

SETPOINT - Step-Type

SP1

SP2

HOUR

MIN

SEC

EV1

Enter the temperature to achieve for the step's ending set point for Channel 1 according to the HOUR, MIN, SEC parameters.

Enter the temperature to achieve for the step's ending set point for Channel 2 according to the HOUR, MIN, SEC parameters.

Dependent on TYP parameter under SPCLFUNC.

Enter the hours programmed for this step.

Enter the minutes programmed for this step.

Enter the seconds programmed for this step.

Enter the Event Output 1 status. Dependent on output & AUX1.

R1L and R1H

R2L and R2H

0 - 23 hours

0 - 59 minute

0 - 59 seconds

OFF or ON

EV2

EV3

EV4

EV5

EV6

EV7

EV8

Enter the Event Output 2 status. Dependent on output & AUX2.

OFF or ON

Enter the Event Output 3 status. Dependent on output board.

OFF or ON


OFF or ON






OFF or ON

OFF or ON

OFF or ON

OFF or ON

Press the MODE key to return to the FILE? prompt.

Default

1

1

-

-

-

-

-

-

-

-

-

-

-

-

-

Table 10 -

PROGRAM Prompts and Description.

Your Settings

JUMPLOOP - Step-Type

JS

JC

Enter the step number the 922 will jump to.

Enter the number of times the 922 will jump to the step indicated by JS.



WAITFOR - Step-Type

WHR

WMN

WE

Enter the hours the 922 will wait relative to the beginning of the step.

Enter the minutes the 922 will wait relative to the beginning of the step.

Enter the state of the event input to wait for before

W1 continuing the program.

Enter a value to compare with the process variable of

Channel 1.

W2 Enter a value to compare with the process variable of

Channel 2. Dependent on TYP parameter under SPCLFUNC.



AUTOSTART - Step-Type

DAY

HOUR

Enter the number of days for the 922 to wait until

AUTOSTART takes place.

Enter the number of hours for the 922 to wait for the time-ofday clock before AUTOSTART takes place.

MIN Enter the number of minutes for the 922 to wait for the time-of day clock before AUTOSTART takes place.



STOP - Step-Type

STOP

Press ENTER to display the last step of the program.

RETURN

Press the ENTER key to return to the SYSTEM prompt.


1 - 99

0 - 100

0 - 23 hours

0 - 59 minutes

OPEN or CLSE

R1L - R1H

R2L - R2H

0 - 6 days

0 - 23 hours

0 - 59 minutes

1

0

-

-

-

-

-

-

-

-

LINK - Step-Type

FILE?

The current system file will always link to

Step 1 in the file specified.



1 - 10 1

58



PROGRAM Menu


Program

F ILE?

STEP

SETPOINT

SP1

( )

( )

( )

SP2 ( )

HOUR ( )

MIN

SEC

( )

( )

EV1 ( )

EV2 ( )

One of three main level operating menus. From the SETUP menu, you can enter or view step type, program loops, wait for conditions, set points, auxiliary (event) outputs ON/OFF, and step duration.

Represents the current SYSTEM file of the Series 922 to be edited or reviewed.

Range: 1 to 10 files Default: 1

Represents the current step of a file of the Series 922 to be edited or reviewed.

Range: 1 to 99 steps Default: 1

One of six step types under the PROGRAM menu of the Series 922.

Can be programmed as a file or a step to achieve or maintain a set point.

Represents the temperature that the system will try to achieve on

Channel 1 in the amount of time given. This will be done linearly, producing a ramp from a beginning set point to an end set point.


Represents the temperature that the system will try to achieve on

Channel 2 in the amount of time given. This will be done linearly, producing a ramp from a beginning set point to an end set point. This parameter will not appear if the TYP prompt under the SPCLFUNC menu has been selected as "T" (Temperature for Channel 1 only) or

"P" (Process for Channel 1 only).


The number of hours, in combination with the MIN and SEC parameters, that equal the total step time to achieve the temperature under the SETPOINT step-type.

Range: 0 to 23 hours Default: Unprogrammed

The number of minutes that equal total step time to achieve the

temperature of the Series 922. Under the SETPOINT step-type.

Range: 0 to 59 minutes Default: Unprogrammed

The number of seconds that equal total step time to achieve the temperature of the Series 922 under the SETPOINT step-type.

Range: 0 to 59 seconds Default: Unprogrammed

This auxiliary output can be an alarm or event. EV1 will only appear when AUX1 = EV, and the external event board is connected to the

Series 922. Auxiliary outputs can be alarms or events.

Range: OFF or ON

OFF = Event OFF

Default: Unprogrammed

ON = Event ON

EV2 can be an alarm or event. EV2 will only appear when AUX2 =

EV, and the external event board is connected to the Series 922, or

EV2 will appear if T or P in the TYP parameter under the SPCLFUNC menu have been selected and an external event board is present.

Range: OFF or ON Default: Unprogrammed

OFF = Event OFF ON = Event ON

Represents the state the 6 event outputs are forced to when the

How To Program the Series 922, Chapter 6 WATLOW Series 922 User's Manual

59

PROGRAM Menu

EV3 ( )

EV4 ( )

EV5 ( )

EV6 ( )

EV7 ( )

EV8 ( )

RETURN

JUMPLOOP

JS ( )

JC ( )

RETURN

WAITFOR

W1 ( )

W2 ( )

WHR ( )

WMN ( )

SETPOINT step is executed. These events only appear when the 8 output event board is connected to the Series 922.

Range: OFF or ON

OFF = Event OFF

Default: Unprogrammed

ON = Event ON

From RETURN, you can go back to the SYSTEM prompt by pressing the ENTER key, or return to FILE? by pressing the MODE key.

One of six step types under the PROGRAM menu of the Series 922 that can be programmed as a step or file. You can jump from one step to another within a file.

The Series 922 will jump loop to any step within your current file. You cannot jump loop to another step in another file.


The number of times that the Series 922 jumps to the step that was specified by the JS step. 0 = Infinite number of jumps.


From RETURN, you can go back to the SYSTEM prompt by pressing the ENTER key, or return to FILE? by pressing the MODE key.

One of six step types under the PROGRAM menu of the Series 922 that can be programmed to wait for a specific amount of time, a desired set point or both. When either or both are used, they must be true before the program continues.

Value the system compares against the process variable of Channel

1, and waits for, before proceeding to the next step of the program.


Value the system compares against the process variable of Channel

2, and waits for, before proceeding to the next step of the program.

This parameter will not appear if "T" or "P" (Channel 1 only) in the

TYP parameter under the SPCLFUNC menu have been selected.

Range: R2L to R2H Default: Unprogrammed

The hours the system will wait for, relative to when the step began.

This is not a measure of time-of-day.


Represents the minutes the system will wait for, relative to when the step began. This is not a measure of time-of-day.


60



PROGRAM Menu

RETURN

STOP

RETURN

LINK

FILE ( )

RETURN

WE ( )

RETURN

AUTOSTART

DAY ( )

HOUR ( )

MIN ( )

A wait for event input represented by a switch closure or opening, at which the 922 continues the program This is not a voltage or current input.

Range: OPEN or CLSE Default: Unprogrammed

From RETURN, you can go back to the SYSTEM prompt by pressing the ENTER key, or return to FILE? by pressing MODE.

One of six step types under the PROGRAM menu of the Series 922 that can be programmed to automatically start at a determined real time. The AUTOSTART function is dependent on the three parameter settings below ... DAY, HOUR and MIN. If there is a loss of power to the Series 922, the real time clock is also lost, and any programs dependent on time is incorrect.

Represents the number of days that the 922 waits until AUTOSTART takes place. Each time 00:00 is achieved, one day has gone by. If left blank (unprogrammed) the day count is ignored for use as a daily event rather than weekly.

Range: 0 to 6 days Default: Unprogrammed

Stands for the hour that the 922 waits for the time-of-day clock

before AUTOSTART takes place. Under the AUTOSTART step-type.


This parameter represents the minutes that the 922 waits for on the time-of-day clock before AUTOSTART takes place. Under the

AUTOSTART step-type.



One of six step types under the PROGRAM menu of the Series 922, that indicates the end of any file.


One of six step types under the PROGRAM menu of the Series 922 that allows you to link one file to another.

Enter the number of the file that you want to link to from here.



How To Program the Series 922, Chapter 6 WATLOW Series 922 User's Manual

61

Chart 1 - Master Step chart

Step #

√

Step Type

SETPOINT

JUMPLOOP

WAITFOR

AUTOSTART

STOP

LINK

SP1

JS

WE

To FILE?

Values

SP2

JC

W1 W2

Step #

√

Step Type

SETPOINT

JUMPLOOP

WAITFOR

AUTOSTART

STOP

LINK

SP1

JS

WE

To FILE?

Values

SP2

JC

W1 W2

Step #

√

Step Type

SETPOINT

JUMPLOOP

WAITFOR

AUTOSTART

STOP

LINK

SP1

JS

WE

To FILE?

Values

SP2

JC

W1 W2

Step #

√

Step Type

SETPOINT

JUMPLOOP

WAITFOR

AUTOSTART

STOP

LINK

SP1

JS

WE

To FILE?

Values

SP2

JC

W1 W2

Step #

√

Step Type

SETPOINT

JUMPLOOP

WAITFOR

AUTOSTART

STOP

LINK

SP1

JS

WE

To FILE?

Values

SP2

JC

W1 W2

Step #

√

Step Type

SETPOINT

JUMPLOOP

WAITFOR

AUTOSTART

STOP

LINK

SP1

JS

WE

To FILE?

Values

SP2

JC

W1 W2

Step #

62

√

Step Type

SETPOINT

JUMPLOOP

WAITFOR

AUTOSTART

STOP

LINK

SP1

JS

WE

To FILE?

Values

SP2

JC

W1 W2


Time

HR:MN:SEC

WHR:WMN

DAY:HR:MN

Time

HR:MN:SEC

WHR:WMN

DAY:HR:MN

Time

HR:MN:SEC

WHR:WMN

DAY:HR:MN

Time

HR:MN:SEC

WHR:WMN

DAY:HR:MN

Time

HR:MN:SEC

WHR:WMN

DAY:HR:MN

Time

HR:MN:SEC

WHR:WMN

DAY:HR:MN

Time

HR:MN:SEC

WHR:WMN

DAY:HR:MN


EV1 EV2

Events ON or OFF

EV3 EV4 EV5 EV6 EV7 EV8

EV1 EV2

Events ON or OFF


EV1 EV2

Events ON or OFF


EV1 EV2

Events ON or OFF


EV1 EV2

Events ON or OFF


EV1 EV2

Events ON or OFF


EV1 EV2

Events ON or OFF



Alarms

Chapter 7

How To Use the Series 922 Alarms

One of the most versatile features of the Watlow Series 922 is its capability for alarms. The alarms can be automatic signals for process error or temperature related event-type actions in your system.

To use the alarms to their fullest extent, you need to understand what they are and what they will do. Here's an overview of the different alarm parameters again. Although you may already be aware of the alarms, notice how these parameters interact.

Alarm Relay Configuration

Series 922 alarm relays are configured to de-energize when the ACTUAL value is beyond the alarm limits. Normally open contacts are thus closed when temperatures are "OK." That way alarm conditions exist if power is lost from the control.

NOTE: If your unit does not have an external output board, or it's not connected, this section does not apply to your unit.

Number Of Alarms

There are two alarms in the Series 922, ALARM 1 and ALARM 2. These parameters indicate an alarm condition, or a de-energized alarm relay with a flashing

ALRMX - XX in the alphanumeric display. By retaining the indication of a previous alarm condition, an operator absent from the control panel can be aware that an alarm occurred. We'll look more closely at that in a few minutes.

Alarm 1 will only respond to Channel 1 and Alarm 2 only responds to Channel 2.

How To Use The Alarms, Chapter 7 WATLOW Series 922 User's Manual

63

Alarms

Figure 34 -

Alarm Type for

Alarm 1 is "Process"

Alarm (ALTYP1=P)

Alarm Types

There are two Alarm Types for each alarm. ALTYP1 and ALTYP2 are the prompts for Alarm 1 and Alarm 2, respectively. The choices are: Process alarm (P), or Deviation alarm (D).

For review, a "process" type alarm is one that is set at a fixed degree distance, either positive or negative, from the mean 0

°

C or 0

°

F. A "deviation" type alarm is always a fixed degree distance, positive or negative, from Set

Point (SP).

If we change SP, a process type alarm remains where it was originally set, while a deviation type alarm will shift with SP the same number of degrees as its value. The examples illustrate a plot of each alarm type.

Here we've added a process alarm function to the basic graph.

Temp

SP1

Actual

0

°

C

Process Alarm

Fixed Distance from 0

°

Time

Figure 35 -

Alarm Type for

Alarm 1 is a "Devia-

tion" Alarm (ALTYP

1=D)

64

This graph shows a deviation alarm setting, and how it shifts with a change in SP.

Deviation Alarm - Fixed Degree distance from SP1

Temp

New SP1

SP1

Actual

0

°

C


Time

How To Use The Alarms , Chapter 7

Alarms

The Operating Band

Now we need to set the alarm limits. In doing so, you'll define an "operating band" where you want system temperature (or your controlled variable) to be

"OK" and alarm-free.

By selecting an alarm type (ALTYP), and then the alarm limits (AXL, AXH), you define the Operating Band. The extreme limits of the Operating Band are defined by the 922's high and low ranges, RXL and RXH.

Alarm Limits

You can set up alarm bands with the two available alarms. Each of the two alarms has a high and a low limit point, indicated by the "L" or "H" designation.

You specify in the Operating Data where you want A1L, A1H, A2L, and A2H.

These limit points are themselves restricted by the controller's high and low range Operating Parameters, RXH and RXL. In other words, you can't set an alarm limit beyond the range limits you enter into the microprocessor.

Temp

SP1

Actual

0

°

C

Time

New SP1

AH 2

AL 2

Figure 36 -

Alarm Limits for

Alarms 1 and 2 with

"Process" Type

Alarm (ALTYP1=P,

ALTYP2=P)

NOTE: Only Channel 1 is shown here.


65

Alarms

Figure 37 -

Alarm Limits for

Alarms 1 and 2 with

"Deviation" Type

Alarm (ALTYP=D,

ALTYP=D)

NOTE: Only Channel 1 is shown here.

Temp

SP1

Actual

0

°

C

Alarm Function, Latching or Non-Latching

Alarm function is either "latching" or "non-latching." Latching is a means of

"saving" indication of an alarm event for the operator to clear manually. A latching alarm requires the operator to manually clear it with the ENTER key when ACTUAL returns to within the limits. A non-latching alarm clears itself automatically when ACTUAL returns to within the limits. It's your choice.

Here again is the "LAT" information from the Operating Parameters:

LAT

Defines Alarm Function:

NLAT = Non-latching. Alarm relays are automatically energized when

ACTUAL temperature returns to within the operating band (as defined by ALTYP X, AXL and AXH).

LAT = Latching. Requires the ENTER key to manually energize alarm relays after ACTUAL temperature returns to within the operating band

(as defined by ALTYP X, AXL and AXH).

To clear an alarm in the RUN mode, simply press ENTER. To clear an alarm in the HOLD mode, return to the SYSTEM prompt. Press the MODE key until

CLR ALRM is displayed and press ENTER.

AH 2

New SP1

AL 2

66


How To Use The Alarms , Chapter 7

Clearing An Alarm Message

You can clear a latched alarm when the ACTUAL display value returns to within the operating band. You do not need to clear, indeed, you cannot clear, a non-latching alarm. A non-latching alarm clears itself as soon as the AC-

TUAL display value returns to within the operating band. There is a 3

°

F switching differential.

An Alarm And The State Of The Alarm Relay

Simply stated, a flashing alarm on the 922 alphanumeric display indicates the state of the alarm relay contacts. A flashing alarm means that when an alarm condition is present (ACTUAL beyond an alarm limit), then the alarm relay is de-energized.

Alarms


67

Specifications

Specifications

68

Appendix

Control Mode

• Microprocessor-based, user selectable modes.

• Dual inputs, dual control outputs per channel.

• 8 event outputs/1 event input/1 remote hold input.

• 99 step programmer with up to 10 profiles.

• Control outputs: User selectable as: Heat/Cool, Cool/Heat.

• Outputs independent, or related via deadband for Heat/Cool.

• ON/OFF: 3

°

F or 1.7

°

C switching hysteresis or 0.3

°

F or 0.17

°

C for 0.1

°

Units .

• PID parameters per channel:

Proportional band: 0 to 500

°

C or 0 to 50.0

°

C for 0.1

°

Units.

Reset: 0.00 to 5.00 repeats per minute.

Rate: 0.00 to 5.00 minutes.

Rate band: 0 to 7 times proportional band.

Cycle time: 1 to 60 seconds.

• Deadband:

±

36

°

F,

±

20

°

C or Units

±

2.0

°

C for 0.1

°

Units.

• Auxiliary outputs: User selectable as:

• Events 1 & 2 selectable as alarms for Channels 1 & 2.

• Process or deviation value, per output.

• Alarms, latching or non-latching. When non-latching, control will have

3

°

F/1.7

°

C switching hysteresis or 0.3

°

F/0.17

°

C for 0.1

°

Units.

• Separate high and low values, per output.

Operator Interface

• Membrane front panel.

• Four digit 1/2" LEDs displaying actual process input value.

• LED indication of

°

C,

°

F, or process variable units.

• MODE, ENTER, UP, DOWN, and RUN/HOLD keys.

• Eight character alphanumeric display of operating data.

Input

• Thermocouple, RTD and electrical process input.

• Automatic cold junction compensation for thermocouple.

• RTD input 2 or 3 wire, platinum, 100 ohm @ 0

°

C, calibrated to JIS curve

#3916 (0.003916

Ω

/

Ω

/

°

C), DIN curve #3850 (0.003850

Ω

/

Ω

/

°

C).

• Sensor break protection de-energizes control outputs to protect system.

• Ungrounded sensors required..

• Operating ranges user selectable.

J t/c:

K t/c:

32 to 1382

°

F or 0 to 750

°

C

-328 to 2282

°

F or -200 to 1250

°

C

T t/c: -328 to 662

°

F or -200 to 350

°

C

1

°

RTD: -328 to 1112

°

F or -200 to 600

°

C

0.1

°

RTD: -99.9 to 392.0

°

F or -99.9

to 200.0

°

C

0-5VDC: -99 to 1800 units

4-20mA: -99 to 1800 units

RH, 0-5VDC: 0 to 100% RH Vaisala sensor

• Calibration offset or input signal,

±

90

°

F,

±

50

°

C,

±

50 PVU's, front panel adjustable 9.0

°

F,

±

5.0

°

C for 0.1

°

C Units.

•

°

F,

°

C, or process variable units are user selectable.


Appendix

Output - Control Per Channel (Single or Dual)

• Solid state relay, 0.5A @ 24VAC min. 264 VAC max., opto-isolated, zero cross switching.

• Solid state switch, 20mA @ 20VDC max, open collector switch-to-ground.

• 4-20mA into 600

Ω

load maximum.

Output/Input - Auxiliary

• External, plug-in module.

• Solid state relays, 2 or 8 ea., 0.5A @ 24VAC min. 264 VAC max.

• Auxiliary supply: 21 to 33VDC, 25mA maximum.

• Switched DC signal provides a minimum turn on voltage of 3VDC in a minimum 500

Ω

load. Maximum on voltage not greater than 32VDC into an infinite load.

Output - Analog Retransmit

• Device driven must have an input impedance > 10k

Ω

.

• Reference: 0 Units = 0 Volts.

• Scalable: 1mV, 2mV, 5mV, or 10mV per LSD.

• Maximum voltage Span: -9.5 to +9.5 volts.

Accuracy

• Calibration Accuracy and Sensor Conformity:

±

0.15% of span,

±

1 digit at

77

°

F

±

5

°

F (25

°

C

±

3

°

C) ambient & rated line voltage

±

10%.

• Accuracy Span: 1000

°

F or 540

°

C minimum.

• Temperature Stability: 0.18

°

F/

°

F (0.1

°

C/

°

C) change in ambient.

• Voltage Stability:

±

0.01% of span / % of rated line voltage.

Communications

• Serial data communications.

• RS-422A or RS-423A (RS-232C compatible).

• Most operator indication and controls.

• ANSI X3.28 protocol, or XON/XOFF protocol.

• Isolated.

• DB-9 Female connector.

Terminals

• #6 compression type screw terminals.

Power

• 115/230VAC

±

10%, 50/60Hz

±

5%.

• 18VA maximum.

• Data retention upon power failure via nonvolatile memory.

Operating Environment

• 32 to 130

°

F/0 to 55

°

C.

• 0 to 90% RH, non-condensing.

Dimensions

• Height:

• Width:

• Overall depth:

• Behind panel depth: with connector for communication and events:

• Weight:

3.8 in.

3.8 in.

7.0 in.

6.0 in.

8.8 in.

2.8 lb

(96.52 mm)

(96.52 mm)

(177.80 mm)

(152.50 mm)

(223.52 mm)

(1.27 kg)

Specifications

Appendix WATLOW Series 922 User's Manual

69

Ordering

9 2 2 A

Series 922 =

Dual channel microprocessor-based, dual input, quad output, ramping controller, 99 steps, 1/4 DIN.

Input

1 = Dual RTD 1

°

2 = RTD 1

°

and process

3 = Type T thermocouple and process

4 = Dual process

5 = Dual Type T thermocouple

6 = Dual RTD 0.1

°

7 = RTD 0.1

°

and process

8 = Dual Type K thermocouple

9 = Dual Type J thermocouple

A = Type K thermocouple and process

B = Type J thermocouple and process

Output Per Channel

BB = Dual solid state relay, Form A, 0.5A

with RC contact suppression

CC = Dual switched DC, non-isolated

FB = Process, 4-20mA, non-isolated/solid state relay,

Form A, 0.5A, with RC contact suppression

Communications

A = None

B = Isolated RS-423 (232C compatible)

C = Isolated RS-422

0 0 0 0

70

Auxiliary event board =

Remote event/alarm output board

Cable Length

18 = 18.0 in. (457 mm)

Other lengths, contact factory.

A 0 0 7 1 7 3

Event Output

C2 = (2) event outputs, switched DC, non-isolated

C8 = (8) event outputs, switched DC, non-isolated

B2 = (2) event outputs, solid state relay, Form A, 0.5A, with

RC contact suppression

B8 = (8) event outputs, solid state relay, Form A, 0.5A, with RC contact suppression

K2 = (2) event outputs, solid state relay, Form A, 0.5A, without


K8 = (8) event outputs, solid state relay, Form A, 0.5A, without


2


Appendix

T/C Calibration

Thermocouple Field Calibration Procedure

Equipment Required

• Type "J", "K", or "T" (depending on model number) Reference

Compensator with reference junction at 0

°

C/32

°

F

AND

• Precision Millivolt Source.

OR

• Type "J", "K", or "T" thermocouple calibrator.

• 4-1/2 digit Digital Voltmeter (DVM). Can be used with either configuration above.

Setup and Calibration

k

NOTE:

Before calibration on an installed control, make sure all data and parameters are documented.

1.

Connect the input side of the thermocouple reference compensator to #6

Positive and #8 Negative for Channel 1 [#3 Positive and #5 Negative for

Channel 2] on the Series 922 terminal strip. Short the output side of the compensator and turn on the compensator. See Figure 38.

If a t/c calibrator is used, connect to terminal #6 positive and #8 negative for Channel 1 (#3 positive and #5 negative for Channel 2) in the 922

Series 922

Terminal Strip

terminal strip. Set the calibrator for the appropriate thermocouple.

Also, set either 0

°

C or 32

°

F.

Channel 1

Series 922

Terminal Strip

Channel 2

(+)

(+)

Copper Wires

(-)

Open

Test

On

Omega Model

MCJ-J or

MCJ-K or

MCJ-T

(-)

T/C Wires

6

7

3

4

6

5

8

8

Figure 38 -

Reference Compensator-to-Series 922

Connection Diagram

2.

Connect AC line voltage, L1 to #17, L2 to #20, ground to #21. Jumper for correct line voltage. See Chapter 4 "How to Install and Wire".

3.

Set DIP Switch #6 to ON. Apply power to the unit and allow it to warm up for 15 minutes. The unit should be in the TEST mode.

4.

Connect DVM common to TP2 and DVM positive to TP1 on the A007-1728 circuit board, located on the top side behind the center chassis support.

DVM should be set up for DC volts, and in a range capable of displaying

6.3000 volts.


71

T/C Calibration

5.

Press the MODE key until DAS6 XXXX appears on the alphanumeric display. Use the UP/DOWN keys to adjust the alphanumeric display to match the reading on the DVM. Once the two readings match, press the

ENTER key.

6.

Press the MODE key until CH1Z XXXX appears on the alphanumeric display for Channel 1 [CH2Z XXXX for Channel 2]. Enter 0.00 millivolts from the millivolt source to the reference compensator, or set the t/c calibrator to 0

°

C/32

°

F. Allow the Series 922 to stabilize for 10 seconds, press the ENTER key.

7.

Press the MODE key until parameter CH1G XXXX for Channel 1 [CH2G

XXXX for Channel 2] appears on the alphanumeric display. Using the table below, set the millivolt source to its appropriate setting, from the millivolt source to the reference compensator. If you are using the t/c calibrator, use the values in the table below. Allow the Series 922 to stabilize for

10 seconds,press ENTER.

Thermocouple Type

J t/c

K t/c

T t/c

Millivolt Source

Setting

42.283mV

50.633 mV

17.816mV

T/C Calibrator

Setting

1382

°

F/750

°

C

2282

°

F/1250

°

C

662

°

F/350

°

C

8.

Remove power from the Series 922. Remove thermocouple wires from #6 and #8 for Channel 1 [#3 and #5 for Channel 2]. Turn off the compensator.

Set DIP Switch #6 to the OFF position.

72


Appendix

RTD Field Calibration Procedure


• 100

Ω

precision decade resistance box with 0.01 ohms resolution.

• 4-1/2 digit, digital voltmeter (DVM).


NOTE: Before calibration on an installed control, make sure all data and

parameters are documented.

1.

Connect the precision decade box to #6, #7, and #8 of the Series 922 terminal strip for Channel 1 as shown on Figure 39. For Channel 2 connect the precision decade box to #3, #4, and #5 of the terminal strip.

2.

Connect AC line voltage, L1 to #17, L2 to #20, ground to #21. Jumper for

RTD Calibration

Figure 39 -

Decade Resistance

Box-to-Series 922


Ω

G

L

H

General Radio Model #1433-T

Series 922

Terminal Strip

Channel 1

Series 922

Terminal Strip

Channel 2

8

7

6

5

4

3 correct line voltage, see Chapter 4, "How to Install and Wire.

3.

Set DIP Switch #6 ON. Apply power to the Series 922 and allow it to warm up for 15 minutes. The unit should be in the TEST mode.

4.

Connect DVM common to TP2 and DVM positive to TP1 on the A007-

1729 circuit board. Located on the top side behind the center chassis support. DVM should be set up for DC volts, and in a range capable of displaying 6.300 volts.

5.

Using the MODE key, advance until the DAS6 XXXX parameter appears in the alphanumeric display. Using the UP/DOWN keys, adjust the alphanumeric display to match the DVM display. Press the ENTER key.

6.

Press the MODE key until the CH1Z XXXX parameter, for Channel 1, appears on the alphanumeric display [CH2Z XXXX for Channel 2]. Set the


73

RTD Calibration precision decade box to the correct RTD setting from Table 11 that corresponds to the type of 922 unit you have. Allow 10 seconds for settling, press the ENTER key.

7.

Press the MODE key until CH1G XXXX for Channel 1 appears on the alphanumeric display [CH2G XXXX for Channel 2]. Set the precision decade box to the correct RTD setting from Table 11 that corresponds to the type of 922 unit you have. Allow 10 seconds for settling and then press the

ENTER key. This unit is calibrated for JIS RTD on Channel 1 or 2.

8.

Remove power from the Series 922. Remove wires from #6, #7, and #8 for Channel 1. Remove wires from #3, #4, and #5 for Channel 2. Set

DIP Switch #6 to the OFF position.

Table 11 -

RTD Parameter

Settings

Parameters

CH1Z or CH2Z

CH1G or CH2G

1

°

RTD

100.00

317.33

0.1

°

RTD

119.73

177.13

74


Appendix

Process Field Calibration Procedure


• 4-1/2 digit, digital voltmeter (DVM).

• Precision voltage/current source.

Process


NOTE: Before calibration on an installed control, make sure all data and parameters are documented.

1.

Connect the voltage/current source to #6 Positive and #8 Negative on the

Series 922 terminal strip for Channel 1 [#4 Positive and #5 Negative for

Channel 2]. See Figure 40.

Series 922

Terminal Strip

Channel 1

+

(+)

6

Voltage/Current

Source

7

Figure 40 -

Voltage/Current

Source to Series 922


Series 922

Terminal Strip

Channel 2

3

4

( -)

8 5

-

2.

Connect AC line voltage, L1 to #17, L2 to #20, ground to #21 on the Series

922 terminal strip. Jumper for correct line voltage. See Chapter 4, "How to

Install and Wire".

3.

Set DIP Switch #6 ON. Apply power to the 922 and allow it to warm up for

15 minutes. The unit should be in the TEST mode.

4.

Connect DVM common to TP2 and DVM positive to TP1 on the A007-

1728 or A007-1729 circuit board, located on the top side behind the center chassis support. This circuit board is dependent on your model number.

Your unit will have only one of these boards. DVM should be set up for DC volts, and in a range capable of displaying 6.3000 volts.

5.

Press the MODE key until DAS6 XXXX appears on the alphanumeric display. Use the UP/DOWN keys to adjust the alphanumeric display on the

922 to match the reading on the DVM. Once the two readings match, press the ENTER key.

6.

Press the MODE key until CH1Z XXXX appears on the alphanumeric display for Channel 1 [CH2Z XXXX for Channel 2]. ENTER 0mA, press

ENTER. Allow 10 seconds for stabilizing, press the ENTER key.

7.

Press the MODE key until CH1G XXXX appears on the alphanumeric display for Channel 1 [CH2G XXXX for Channel 2]. Input 20mA, press

ENTER. The unit is now calibrated for Channel 1 process inputs. The process readings on the ACTUAL display should be at the R1H (or R2H) setting.

8.

Remove power from the Series 922. Remove wires from #6 and #8 for

Channel 1 [#3 and #5 for Channel 2]. Set DIP Switch #6 to the OFF position.


75

Glossary, A - B

76

Glossary

This glossary includes general thermal system control terms.

ACCESS( ):

In the SETUP menu of the Series 922, an ACCESS number (0, 1,

3, 5) must be selected to enter the personality of your Series 922 into the CALIB, PID, DIAGNOS, and SPCLFUNC. Any other number will return to SYSTEM.

Actual Display data: Displayed information which gives the operator/programmer real or "actual" data, i.e., actual process temperature. See "Programmed display data."

Alarm:

A condition, generated by the Series 922, indicating that the process has exceeded or fallen below the set or limit point.

ALTYP1:

Present only when AUX1 = AL. Determines whether the alarm type for Auxiliary Output 1 will be a process alarm or a deviation alarm for the Series 922.

ALTYP2:

Present only when AUX2 = AL. Determines whether the alarm type for Auxiliary Output 2 will be a process alarm or deviation alarm.

Analog retransmit:

Allows the operator to select which parameter the analog retransmit signal represents. For a chart recorder output, select

C1 or C2. For a remote set point signal (to slave controls) select

SP1 or SP2. C2 and SP2 will not appear if TYP parameter is T or P.

Anti-reset:

Control feature that inhibits automatic reset action outside of the proportional band.

Automatic Prompts: Data entry points where a microprocessor-based control

"prompts" or asks the operator/programmer for information input.

AUTOSTART:

One of six step types under the PROGRAM menu of the Series

922 that can be programmed to automatically start at a certain time, depending on the DAY, HOUR, and MIN parameter settings.

AUX1:

AUX2:

A1H:

A1L:

A2H:

A2L:


This parameter determines whether Auxiliary Output 1 will be an alarm or event output for the Series 922.

This parameter determines whether Auxiliary Output 2 will be an alarm or event output for the Series 922.

When AUX1 = AL, it represents the high process alarm or high deviation alarm for Alarm 1.

This parameter represents the low process alarm or low deviation alarm for Alarm 1 of the Series 922. Displayed only when

AUX1 = AL.

Represents the high process alarm or high deviation alarm for alarm 2 of the Series 922. Displayed only when AUX2 = AL.

The low process alarm or low deviation alarm for Alarm 2 of the

Series 922. Displayed only when AUX2 = AL.

Appendix

BAUD:

CAL1, CAL2:

CALIB:

C/F/U:

Closed Loop:

CLR FILE:

Cold Start:

COM:

COM ID:

CT1C/CT2C:

CT1H/CT2H:

Cycle time:

DAY:

DB1/DB2:

Dead band:

Derivative:

Deviation:

Appendix

Represents the baud rate (1200, 2400, 4800, 9600) that serial communications will be running at. This parameter will not appear under ACCESS (5) of the SPCLFUNC menu if your

Series 922 does not have communications.

An offset of the process variable for Channel 1 or Channel 2.

This number is added to the value that the system derives. The final result is used for the set point as well as a front panel indication.

Glossary, B - D

In the Series 922, when ACCESS (0) is entered under the

SETUP menu, the CALIB parameters appear. These parameters setup the Real Time and the calibration offset of the process variable.

Accepts the sensor input and scales it to degrees Celsius,

Fahrenheit, or Units of measure.

Control system that has a sensing device for process variable feedback.

Allows the operator to clear a file of the Series 922.

A "clean", or completely cleared-of-user-program-information, start-up condition. (Factory settings.)

Represents the selection of the protocol type for serial communications. This selects XON/XOFF protocol or ANSI X3.28

communication protocol under the ACCESS (5) SPCLFUNC menu. This parameter will not appear if your Series 922 does not have communications.

Represents the device identification number as required for the

ANSI X3.28 communications protocol for the Series 922.

The Cooling Cycle Time, for Channel 1 or Channel 2, usually expressed in seconds for a controller to complete one ON/OFF cycle. The time between successive turn ons.

The Heating Cycle Time, for Channel 1 or Channel 2 usually expressed in seconds for a controller to complete one ON/OFF cycle. Time between successive turn ons.

The time necessary to complete a full ON-through-OFF period in a time proportioning control system.

Represents the number of days that the 922 will wait until

AUTOSTART takes place. Each time 00:00 is achieved, one day has gone by.

The Dead Band parameter for Channel 1 or Channel 2 representing the area where no heating or cooling takes place in a heat/ cool proportional control.

A temperature band between heating and cooling functions.

Anticipatory action that senses the rate of change of temperature, and compensates to minimize overshoot and undershoot. Also

"Rate".

The difference between the value of the controlled variable and the value at which it is being controlled.


77

Glossary, D - H

Default parameters: The parameters, or programmed instructions, which are permanently stored in microprocessor software to provide a data base.

DIP Switch:

DIN:

A Dual In-line Package switch.

Deutsche Industrial Norms, a widely-recognized German standard for engineering units.

Display capability:

In a digital indicating instrument, the entire span that can be indicated if fully utilized.

Droop:

78

Duty cycle:

ER1:

ER2:

Events:

EV1 & EV2:

EV3 - EV8:

FILE:

GS:

HOUR:


The difference in temperature between set point and stabilized process temperature.

Percentage of "load ON time" relative to total cycle time.

ER1 (Error 1) is considered a fatal error; your system will shut down. When the Series 922 shuts down, all events will be turned off, and your program will stop running. When an error occurs,

ER1 00XX will alternately flash with the SYSTEM mode, and

ENTER the ER1 parameter. This will clear your error unless it is a re-occuring error and has not been resolved.

ER2 (Error 2) is considered nonfatal. If you are in the RUN mode, your program will continue running unless it is a program error. ER2 00XX appears, and will flash alternately along with the parameter that you are presently on. Clear an ER2 parameter under the SYSTEM mode. If the error persists, refer to the

Error Code list on Page 90 to clear.

An event is an ON/OFF auxiliary output relay signal. You can use events, based on time, temperature, or other process variables, to trigger peripheral equipment or process.

These auxiliary outputs can be alarms or events. EV1 and EV2 only appear when AUX1 and AUX2 = EV respectively, and when the two or eight output external event board is connected. You can change the state of the events only in the HOLD mode.

Auxiliary outputs can be alarms or events.

These auxiliary outputs are events. EV3 through EV8 only appear when the eight output external event board is connected.

Represents the current SYSTEM file of the Series 922 to be edited or reviewed. Under the LINK parameter, FILE? stands for the file that you want to link to.

The Guaranteed Soak parameter guarantees that the actual temperature of Channel 1 is being controlled within a window around set point. If exceeded, the step time clock will stop until the actual temperature is within the soak window.

The HOUR parameter has three meanings, depending upon which menu you are in.

PROGRAM menu - The number of hours, in combination with the

MIN and SEC parameters, that equal the total step time to achieve the temperature.

Under the AUTOSTART step type, the hours that the 922 will wait for the time-of-day clock before AUTOSTART takes place.

SETUP menu - Represents the SYSTEM 24 hour time-of-day clock. Midnight = 0 hours.

Appendix

Hunting:

Hysterisis:

Input:

Integral:

Isolation:

JC:

JS:

JUMPLOOP:

LAT:

LINK:

LOCK:

MIN:

Offset:

ON/OFF control:

Open loop:

Operating band:

Appendix

Oscillation or fluctuation of process temperature between set point and process variable.

In ON/OFF control, the temperature change necessary to change the output from full ON to full OFF.

Process variable information being supplied to the instrument.

Control action that automatically eliminates offset, or "droop", between set point and actual process temperature. Also reset.

Electrical separation of sensor from high voltage circuitry. Allows for application of grounded or ungrounded sensing element.

The Jump Count parameter represents the number of times that the Series 922 will jump to a specified step.

The Jump Step parameter of the Series 922 will jump to any step within your current file. You cannot Jump Step to another step in another file.

Glossary, H - O


922, that can be programmed as a step or a file. You can jump from one step to another within a file.

Latches your alarm outputs when the Series 922 has an alarm condition. Remains active until you manually clear any alarms.


922, that allows you to link one file to another.

Allows for specific groups of parameters to be unaffected by the

Up/DOWN and ENTER keys, preventing these parameters from being changed accidentally. 0 = No lock, full access of all parameters. 1 = Prevents user from editing all parameters except the SYSTEM parameter group, FILE and STEP. 2 =

Prevents user from editing all parameters except ER1, ER2,

ALRM in the SYSTEM menu, the LOCK parameter, the STEP and FILE parameter in the PROGRAM menu.

The MIN parameter has three meanings depending upon which parameter you are in.

PROGRAM menu - The number of minutes that equal total step time to achieve the temperature of the Series 922.

Under the AUTOSTART step type in the PROGRAM menu, it represents the minutes that the 922 will wait for on the time-ofday clock before AUTOSTART takes place.

SETUP menu - The SYSTEM 24 hour time-of-day clock setting.

Adjustment to actual input temperature and to the temperature values the Series 922 uses for display and control.

Control of temperature about a set point by turning the output full

ON below set point and full OFF above set point in heat mode.

Control system with no sensory feedback. The 922 uses a closed loop.

Area around set point in the Series 922 where ACTUAL temperature is deemed safe, or "OK". The band is defined under

ACCESS (5), SPCLFUNC, under the SETUP menu by Alarm

Types (ALTYP1 and ALTYP2) and under ACCESS (0), CALIB, by Alarm High and Low Limits (A1H, A1L and A2H, A2L).


79

Glossary, O - R

80

OUT:

Output:

Overshoot:

PB1C/PB2C:

PB1H/PB2H::

P control:

Parameter:

PD control:

PI control:

PID:

Select an output type. Action in response to the difference between set point and process variable.

Action in response to difference between set point and process variable.

Condition whereby temperature exceeds set point due to initial power up or process changes.

A proportional temperature band for Channel 1 or Channel 2 expressed in degrees within which a temperature controller proportioning function is active for cooling expressed in degrees.

A proportional temperature band for Channel 1 or Channel 2 expressed in degrees within which a temperature controller proportioning function is active for heating. Expressed in degrees.

Proportioning control.

A physical property whose value determines the response of an electronic control to given inputs.

Proportioning control with rate action.

Proportioning control with auto-reset.

When ACCESS (1) is entered in the Series 922, the PID parameters will appear. These parameters consist of Proportional, Integral (auto reset), and Derivative (rate) actions.

PID control:

Process Variable:

Programmed display

Displayed information which gives the operator/programmer

data:

the "programmed" or intended process information, i.e., intended set point, intended alarm limit, etc. See "Actual displayed data."

Proportional band:

The span of temperature about the set point where time proportional control action takes place.

Proportioning control:

R1H/R2H:

See Time proportioning control.

Represents a high limit to set point for Channel 1 or Channel 2.

The default values are also the high limits of your input type.

R1L/R2L:

Rate:

Proportioning control with auto-reset and rate.

Thermal system element to be regulated, such as time temperature, relative humidity, etc.

Represents a low limit to set point for Channel 1 or Channel 2.

The default values are also the low limits of your input type.

Anticipatory action that senses the rate of change of temperature and compensates to minimize overshoot. Also "derivative."

Rate Band:

RB1C/RB2C:

A thermal control band that defines where the rate (derivative) function begins. A Watlow rate band occurs centered on set point at one or more times the width of the proportional band.

The thermal control band for cooling in Channel 1 or Channel 2 that defines where the rate (derivative) function begins.


Appendix

RB1H/RB2H:

RS1C/RS2C:

RS1H/RS2H:

RT1C/RT2C:

RT1H/RT2H:

Reference junction:

Reset:

Reset windup inhibit:

RETURN:

RTD:

SE1/SE2:

SEC:

Set point:

SETPOINT:

SP1/SP2:

SPCLFUNC:

STEP:

STOP:

Appendix

A thermal control band for heating in Channel 1 or Channel 2 that defines where the rate (derivative) function begins.

Reset (integral) cooling control action for Channel 1 or Channel

2 that automatically eliminates offset, or "droop", between set point and actual process temperature in a proportional control.

Expressed in repeats per minute.

A reset (integral) heating control action for Channel 1 or

Channel 2 that automatically eliminates offset, or "droop," between set point and actual process temperature in a proportional control. Expressed in minutes.

Glossary, R - S

The Rate (derivative) Cooling function for Channel 1 or

Channel 2 that is determined by how fast the error being corrected is increasing. Expressed in minutes.

The Rate (derivative) for the Heating function for Channel 1 and Channel 2 that is determined by how fast the error being corrected is increasing. Expressed in minutes.

Synonymous with cold junction. See "Cold junction."

Control action that automatically eliminates offset, or "droop," between set point and actual process temperature. Also

"integral."

Synonymous with anti-reset. See "Anti-reset."

From any RETURN parameter, you can go back to SYSTEM.

Resistance Temperature Detector. Resistive sensing device displaying resistance versus temperature characteristics.

Displays positive temperature coefficient.

Only appear when in the RUN mode. Represents the set endpoint of the current step for Channel 1 or Channel 2 that the Series 922 will try to achieve in the amount of time given.

This will be done linearly, producing a ramp from a beginning set point to an end set point. Seen only in the RUN mode.

The number of seconds that equal total step time to achieve the temperature of the Series 922.

Intended value of the process variable.


922. Can be programmed as a file or a step to achieve or maintain a set point.

When in the PROGRAM menu, this is the set point that the control will try to achieve by the end of the step. When in the

RUN mode it represents the current set point. Its primary function is as the control point of the closed loop.

When ACCESS (5) is selected under the SETUP mode of the

Series 922, the Special Function parameters appear. Here you can select the input type, degrees, output type, auxiliary and alarm types among others.

Represents the current SYSTEM file step of the Series 922 to be edited or reviewed.

One of six step types under the PROGRAM menu of the

Series 922, that will indicate the end of any file.


81

Glossary, S - Z

82

SYSTEM:

Switching sensitivity:

Thermal System:

Thermocouple:

Temperature sensing device that is constructed of two dissimilar metals wherein a measurable, predictable voltage is generated corresponding to temperature.

Thermocouple break

Fail-safe operation that assures output shutdown upon an open

protection:

thermocouple condition.

Three mode

control: Proportioning control with reset and rate.

TI:

Represents the Real Time hours and minutes of the Series

922's system.

Time proportioning control:

Action which varies the amount of ON and OFF time when

"close" to the set point, i.e., in the proportional band. This variance is proportional to the difference between the set point and the actual process temperature. In other words, the amount of time the output relay is energized depends on the system temperature.

Triac:

WAITFOR:

One of three main level operating parameters. From the

SYSTEM menu, you can generate a non-ramping set point

(fixed), manipulate Events 1 through 8, clear error codes and latching alarms, and monitor Channel 2's actual temperature and the external input.

In ON/OFF controls, the temperature change necessary to change the output form full ON to full OFF (3

°

or

°

F in the

Series 922.)

A regulated environment consisting of a heat source, heat transfer medium, sensing device and a process variable control instrument.

Warm start:

WE:

WHR:

Solid state switching device.


922 that can be programmed to wait for a specific amount of time, or a process value.

Start-up condition where all program information is remembered by the instrument's memory backup protection.

Represents the state that the Series 922 will wait for, in the program, for the remote event input to be present.

The hour that the system will wait for relative to when the step began. This is not a measure of time-of-day.

WMN:

W1/W2:

Zero switching:

Represents the minutes that the system will wait for relative to when the step began. This is not a measure of time-of-day.

Temperature that the system will compare against the process variable of Channel 1 or Channel 2, and wait for, before proceeding to the next step.

Action which provides output switching only at the zero voltage crossing points of the AC line.


Appendix

A

Accessories, 70

Actual and Alphanumeric Display Area, 13, Fig. 6

Alarms,

Clearing, 67

Function, 66

Limits, 65

Types, 64

AUTOSTART Step Type, 18

B

Backward Jump, 40

C

Calibration, 71

Chart Recorder, 36, 56

Clean Input Power, The Do's and Don'ts, 23

Combination Differential Filter, 25, Fig. 11

Common Mode Filter Wiring, 25, Fig. 10

D

Decade Resistance Box-to-Series 922 Connection

Diagram, 73, Fig. 41

Default Parameters, 43, 46-48, 58

Differential Mode Filter Wiring, 25, Fig. 9

Dimensions,

External Event/Alarm Board, 27, Fig. 14

Faceplate, 26, Fig. 12

Panel Cutout, 27, Fig. 15

Sideview, 27, Fig. 13

DIP Switch,

Location, 10 Fig. 3

Selection, 10, Table 1

DIP Switches, 10, 38

How to Set, 9

E

Editing Your Program, 17

Enter Operating Data And Operating Parameters,

Chapter 6, 42

Error Codes, 87

Event,

Inputs, 28, 33, 38, 44

Outputs, 34

F

Forward Jump, 40

G

Glossary, 76

Ground Loops, 24

Guaranteed Soak (GS), 39

H

How To,

Install And Wire The Series 922, Chapter 4, 21

Install the Series 922, 26

Open the 922, 9, Fig. 2

Program the 922, Chapter 6, 38

Index

Set DIP Switches, 9

Tune, Chapter 5, 36

Run, 20

Use Alarms, Chapter 7, 63

Use the Keys and Displays, Chapter 2, 12

Wire The Series 922, 29

I

Index, 83

Input Options, 29, Fig. 17-21

Input Power Definitions, 23

Intertwined Loop, 41

Installation Procedure, 26

J

JUMPLOOP,

Types, 40

Rules to Follow, 41

K

Keyboard Area, 13 Fig. 7

L

Line Filtering Configuration, 24

LINKing Files, 18

M

Master Step Chart, 62, Chart 1

Microprocessor Are In a Way Like Trout..., 22

Model Number, 70

Modes, Overview, 11

N

Nested Loop, 41

Noise,

Suppression Device Ratings, 24, Table 7

O

Open the 922, How to, 9, Fig. 2

Output "BB" Wiring, Dual SS Relay, 32, Fig. 22

Output "CC" Wiring, SS Switch, 32, Fig. 23

Output "FB" Wiring, 4-20mA/SS Relay, 32, Fig. 24

Overview of the 922 Operating Modes, 11, Fig. 4

P

Packing List, 8

Power Wiring, 28, Fig. 16

Preventing Noise, Installation Guidelines, 23

Process Calibration, 75

Process Variable Unit, 4-20mA/SS Relay, 31, Fig. 24

PROGRAM, 57

Q

Quick Reference, 89


83

Index

R

Read Me First, 7

Reference Compensator-to-Series 922 Connection

Diagram, 71, Fig. 40

Returns, 85

RTD Parameter Settings, 74, Table 11

RTD Sensor Wiring,

Dual, 29, Fig. 17

RTD/Process, 30, Fig. 18

Running Your Series 922, 20, Fig. 8

S

Sample Program, Chapter 3, 14

Sensor,

Installation, 21, 29

Wiring, 29

Series 922 Input and Output Overview, 7, Fig. 1

SETUP, 45

Shipping Claims, 86

Specifications, 68

SS Relay Output Wiring, 31, Fig. 22

SS Switch Output Wiring, 31, Fig. 23

Steps To Put Your Control To Work, 8

SYSTEM, 42

System,Wiring Example, 35, Fig. 29

T

Table of Contents, 3

Thermocouple Calibration, 71

Thermocouple Sensor Wiring,

TC/ Process, 30, Fig. 19

Dual TC, 31, Fig. 21

Tuning, 37

Reference, 36

U, V

Vaisala sensor, 21

W

WAITFOR Step, 19

Warranty, 85

Watlow Controls, 86

Where To Go From Here, 11, 12, 20

Wiring Example, 35, Fig. 29

84


Appendix

Warranty Information

The Watlow Series 922 is warranted to be free of defects in material and workmanship for 36 months after delivery to the first purchaser for use, providing that the units have not been misapplied.

Since Watlow has no control over their use, and sometimes misuse, we cannot guarantee against failure. Watlow's obligations hereunder, at Watlow's option, are limited to replacement, repair or refund of purchase price, any parts which upon examination prove to be defective within the warranty period specified.

This warranty does not apply to damage resulting from transportation, alteration, misuse or abuse.

Returning Merchandise

The following procedure applies for any products returned to the factory:

1.

You must call Watlow Customer Service, 507/454-5300, for a Return

Material Authorization (RMA) number before returning any item for repair.

We need this information:

• Ship to address

• Contact name

• Bill to address

• Phone number

• Ship via • Your P.O. number

• Symptoms and/or special instructions

• Name and phone number of person returning the material.

We will not accept a return without an RMA number. The RMA number must appear on the outside of the carton and on all paperwork. Cartons without RMA numbers will be returned. Ship on a freight prepaid basis.

2.

You need prior approval and an RMA number from the Customer Service

Department when you are returning an unused product for credit. Also, we must apply a 20 percent restocking charge for all returned stock controls and accessories.

3.

After we receive your return, we will enter a repair order, replacement order, or issue credit for material.

4.

In cases of manufacturing defect, we will return it to you with a letter of explanation. Repair costs will not exceed 50 percent of the original cost.

Warranty


85

Shipping

Shipping Claims

When you receive your Watlow control, examine the package for any signs of external damage it may have sustained enroute. If there is apparent damage either outside the box or to its contents, make a claim with the shipper immediately. Save the original shipping carton and the packing material.

Watlow Controls

Watlow Controls is a division of Watlow Electric Manufacturing Company of St.

Louis, Missouri. Watlow is an established manufacturer of industrial electric heating products, in business since 1922. Watlow boasts the ability to begin with a full set of specifications and to complete an industrial product that is manufactured totally in-house, in the U.S.A. Products designed and manufactured by Watlow are electric heating elements, sensors, electronic temperature controls and power switching devices.

The Winona operation has been designing solid state electronic control devices since 1962, and has earned the reputation as an excellent supplier to original equipment manufacturers. These OEMs depend upon Watlow

Controls to provide compatibly engineered controls which they can incorporate into their products with confidence.

Watlow Controls resides in a 100,000 square foot marketing, engineering and manufacturing facility in Winona, Minnesota.

86


Appendix

Series 922 Error Codes/Alarms

ER1 Error Codes and Actions

1 Internal RAM failure. Contact factory.

2 External RAM failure. Contact factory.

3 Bad battery error. Contact factory.

4 Channel 1 A/D conversion error; check sensor or contact factory.

5 Channel 2 A/D conversion error; check sensor or contact factory.

6 Ground A/D conversion error; contact factory.

7 High reference A/D conversion error, contact factory.

8 Channel 1 interpolation/overrange. Check specification for sensor input range.

9 Channel 2 interpolation/overrange. Check specification for sensor input range.

10 D/A gain error. Contact factory.

11 Channel 1 zero error. Contact factory.

12 Channel 1 gain error. Contact factory.

14 Channel 2 zero error. Contact factory.

15 Channel 2 gain error. Contact factory.

18 Stack overflow error. Contact factory.

NOTE:

If an error or alarm flashes on the display, press the enter key to stop the flashing for 5 minutes. To clear the alarm or error, go to the system menu and press enter on the appropriate prompt.

ER2 Error Codes and Actions

1 922 transmit buffer overflow. Clear error, retransmit.

2 922 receiver buffer overflow. Protocol or syntax violation, retransmit.

3 Framing/overrun error. Check baud rate, parity, stop bits.

5 Parity error. Check baud rate, parity, stop bits.

6 Talking out of turn. STX protocol violation, retransmit.

7 Invalid reply error. Figure out communications, retransmit.

20 Command not found. Check your program.

21 Parameter not found. Check your program.

22 Incomplete command line. Syntax error, retransmit.

23 Invalid character. Syntax error, retransmit.

24 Number of characters overflow.

Numeric syntax error, retransmit.

25 Input out of limit. Transmitted value too large or small, retransmit.

26 Read only command. Cannot input a value for that parameter, retransmit.

27 No Channel 2 available error.

28 Write only error. A read was attempted on a parameter that can only be written to.

30 Request to run invalid. Verify a run condition.

31 Request to hold invalid. Verify a hold condition.

32 Command invalid in run mode. Cannot enter values in run mode, retransmit.

33 Self test mode not active. Check to see that DIP switch #6 is ON.

35 Number of steps stored is > or = to 99.

Enter steps only to 99.

36 No file found. Check your program, retransmit.

37 No step found. Check your program.

38 No asterisk input allowed. Follow proper format for entering asterisks.

39 Infinite loop error. Check the number of consecutive loops, retransmit.

40 File change error. An attempt to resume a changed file occurred. Check your program.

Appendix


87

Series 922 Response to Error

Codes

ER1 Codes Shut Down Outputs

The Series 922 will shut down its outputs whenever an ER1 code occurs. An ER1 code usually represents a Series 922 malfunction.

Check These Items First

Anytime you see an ER1 error code, check for these four items first, then follow the recommended action listed by the code: a) Low line voltage b) Noisy environment, noise event c) Vibration d) Temperature or moisture over specification

ER2 Codes Do Not Shut Down Outputs

ER2 error codes are data communication system related or file programming related.

Series 922 Alarm Messages

ALM1___HI occurring

ALM1___LO occurring

ALM2___HI occurring

ALM2___LO occurring

Clearing an Error Code

To clear an Error Code from the alphanumeric display, first correct the problem, then return to the SYSTEM menu.

Use the UP/DOWN keys to reach the ER1 or

ER2 parameter and press ENTER. Press

ENTER or transmit a 0. If the code returns, or if the 922 replies to a data communicated

"? ER1" or "? ER2" query with the same code, the problem still exists. Refer to the

Series 922 manual.

ER1 error codes can only be cleared when in the SYSTEM prompt and ER1 XX is flashing.

ER2 error codes can be cleared by returning to the SYSTEM menu, or by pressing the

ENTER key while in the RUN mode.

How to Clear an Alarm Code

An alarm code will alternately flash with the parameter that you are presently on. If the

LAT alarm value is NLAT, your alarms are non-latching and will clear automatically when the ACTUAL display value returns to within the normal operating band. If LAT =

LAT, the alarms are latching, and must be cleared. Alarm conditions can be cleared, by pressing the ENTER key, while in the RUN mode, or in the CLR ALARM parameter

M

RUN Menu

E

F ILE ?

START

( )

( )

RESUME?

RETURN

To SYSTEM Menu

F ILE

STEP

[ ]

[ ]

SETPOINT

SE1

[ ]

SE2

HOUR

MIN

SEC

[ ]

[ ]

[ ]

[ ]

00 : 00 : 00

One of the three step types will be displayed depending on the type of step PROGRAMmed.

JUMPLOOP, STOP, and LINK step types are immediate, and will not be visible.

JUMPLOOP WAITFOR

W1

W2

WHR

WMN

WE

[ ]

[ ]

[ ]

[ ]

[ ]

AUTOSTART

[ ]

DAY

HOUR

MIN

[ ]

[ ]

00 : 00 : 00

STOP LINK

[ ]

F ILE

00 : 00 : 00

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

[ ]

EV2

EV3

EV4

EV5

EV6

SP1

SP2

C2

EV1

EV7

EV8

EI

88


Appendix

Series 922 Quick Reference

Main Menu

E M

SYSTEM

To SYSTEM Menu

PROGRAM

To PROGRAM Menu

SETUP

To SETUP Menu

SYSTEM Menu

M E

SYSTEM

SP1

( )

C2

EV1

( )

EV3

EV4

EV5

EV6

EV7

EV8

EI

ER1

ER2

( )

( )

CLR ALARM

RETURN

To SYSTEM

( )

( )

( )

( )

( )

( )

Appendix

M E

F ILE?

STEP

( )

( )

SETPOINT

SP1

( )

SP2

( )

HOUR

( )

MIN

SEC

( )

( )

EV1

EV2

( )

( )

( )

EV3

EV4

EV5

( )

( )

EV6

EV7

( )

( )

EV8

RETURN

( )

To SYSTEM

JUMPLOOP

JS

( )

JC

( )

RETURN

PROGRAM Menu

WAITFOR

W1

( )

W2

( )

WHR

( )

WMN

WE

( )

( )

RETURN

AUTOSTART

DAY

( )

HOUR

( )

MIN

( )

RETURN

STOP

RETURN

LINK

F ILE

RETURN

( )


89

Notes

90


Appendix

Notes

Appendix


91

92

Watlow Series 922 User's Manual

Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580, Phone: 507/454-5300, Fax: 507/452-4507


Appendix

No results