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Series 733/734

 

Total

 

Customer

 

Satisfaction

 

3 Year

 

Warranty

Time/Temperature

 

Control

 

Service Manual

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

0600-0008-0000Rev D

$10.00

November 1995

Made in the U.S.A.

Supersedes without change: W733-XSMNRev D00

Contents

This manual is a supplement to the Series 733/734 Program Manual. It is for configuring, servicing and calibrating your control. Use this manual in conjunction with the Series 733/734 Program Manual and Data Communications manual.

Page Item

Chapter 1

3 Install and Wire the Series 733/734

3Dimensions

3Panel Cutout

4How to Wire the Series 733/734

5Power Wiring

5 Input Wiring

8Output 1 Wiring

9Output 2 Wiring

10Event Input Wiring

10Event Output Wiring

10Alarm Wiring

11System Wiring Examples

Chapter 2

12The Setup Mode

12 Advancing Through the Setup Mode

12Select or Change Setup Data Within the Mode

13Setup Parameters

16 Setup ModeTable

Notes

˜

Informational notes alert you to important details. When you see a note icon, look for an explanation in the margin.

Safety Information

Boldface safety information protects both you and your equipment. Please be attentive to them. Here are explanations:

ç

The CAUTION symbol (exclamation point) in the wide text column alerts you to a "CAUTION," a safety or functional hazard which could affect your equipment or its performance. A full explanation is in the narrow column on the outside of the page.

The WARNING symbol (lightning bolt) in the wide text column alerts you to a "WARNING," a safety hazard which could affectyou and the equipment. A full explanation is in the narrow column on the outside of the page.

Chapter 3

16The Service Mode

17Service Parameters

18Service Mode Table

Chapter 4

20Auto-Tuning

21Manual Tuning

Chapter 5

22The Calibration Mode

23Calibration Parameters

24Calibration Procedures

Appendix

30 Glossary

32Index

33Warranty/Returns

34Specifications

35Ordering Information

36CE Declaration of Conformity

37Notes

38Notes

Technical Assistance

If you encounter a problem with your Series 733/734 control, review all of your configuration information to verify that your selections are consistent with your application... Inputs, Outputs, Alarms, Limits, etc. If the problem persists after checking the above, you can get

technical assistance by dialing:

1-507-454-5300

An Application Engineer will discuss your problem with you. Please have the following information available:

Complete model number

Revision number

All configuration information

User's manual

The model and serial numbers can be found on the outside of the case.

Your Feedback

Your comments or suggestions on the manual are welcome, please send them to: Technical Writer, Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580,or phone507/454-5300.The Watlow Series 733/734 Service Manual and integral software are copyrighted by Watlow Winona, Inc., © 1995, with all rights reserved.

2

WATLOW Series 733/734 Service Manual

Install & Wire, Chapter 1

Install

Chapter 1

Install and Wire the Series 733/734

Front panel mounting for ease of installation and service.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WATL W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EVENT

READY

LOAD 1

 

Figure 1 -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Series 733 and 734

1.975

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dimensions.

(50 mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10.625"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MENUS

 

(270 mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

 

 

 

 

 

 

 

 

10.625"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(270 mm)

 

 

 

 

 

 

4

5

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WATL W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.25"

7

8

9

 

 

 

 

 

 

 

EVENT

 

READY

LOAD 1

 

 

 

 

(83 mm)

 

 

 

 

 

 

 

 

 

 

 

MENUS

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

7

8

9

10

11

12

 

 

10

11

12

 

 

 

 

 

SERIES 734

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SERIES 733

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.25"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(83 mm)

 

 

 

Series 733

Series 734

10.13"

(257 mm)

9.78" (248 mm)

R 0.125" (3 mm) Max.

3.13" (80 mm)

Panel Cutout ˜

2.75" (70 mm)

Use four #6-32screws

0.27" Dia.

Use four #6-32screws

with press-in-nuts

(7 mm)

with nutserts

(customer supplied)

 

(customer supplied)

 

Figure 2 -

Panel Cutout.

1.Make a panel cutout per the dimensions given above.

2.Drill four 0.265 (7mm) diameter holes per the dimensions given above.. See Figure 2.

3.Mount the Series 733 or 734 with four #6-32screws usingpress-in-nuts,weld nuts, or equivalent…

˜

NOTE:

For Series 734 orientation (vertical), rotate the panel cutout 90°.

Install & Wire, Chapter 1

WATLOW Series 733/734 Service Manual

3

Wiring

Figure 6 -

Series 733/734

Rear View.

How to Wire the Series 733/734

The Series 733/734 wiring is illustrated by model number option. Check the terminal designation sticker on the control and compare your model number to those shown here and also the model number breakdown on the inside back cover of this manual.

When you apply power without sensor inputs on the terminal strip, the Series 733/734 display alternates parameter data and Er07 at a 3 second rate.

This error indicates an open sensor or A/D error. Remove power to the control and connect the sensor properly. All wiring and fusing must conform to the National Electric Code and to any locally applicable codes as well.

Use Figure 6 as a location reference when wiring your unit.

9-pin

 

 

 

 

Event Input/

 

 

 

12-pin

Output

 

 

 

 

 

 

Output Wiring

Connector

 

 

 

 

 

 

Connector

 

 

 

 

 

 

 

Input/

Communications

Connector

4

 

 

Install & Wire, Chapter 1

WATLOW Series 733/734 Service Manual

 

Power Wiring

1

4

7

10

8

11

2

5

 

3

6

9

12

 

 

 

 

L2

 

 

Fuse

 

 

 

L1

Input Wiring

Use this wiring connector as a reference for terminal orientation. Each individual wiring breakdown will only show the terminals used. This connector only applies to input wiring and communications wiring.

1 2 3 4 5 6 7 8 9 10 11 12

Wiring

Figure 7 -

24VÅ (VAC) Power

Wiring.

WARNING:

To avoid potential electric shock, use National Electric Code (NEC) safety practices when wiring and connecting this unit to a power source and to electrical sensors or peripheral devices.

Figure 8 -

Input Wiring Connector.

´ç

CAUTION:

Input power limited to 15 watts maximum. All components are rated for a maximum of 15 watts.

Install & Wire, Chapter 1

WATLOW Series 733/734 Service Manual

5

Input Wiring

Thermocouple Input

˜

NOTE:

Dual-zonethermocouple units require at least one ungrounded thermocouple.

Figure 9 -

Thermocouple

Wiring.

73XX-1XXX-XXXX

˜(Dual Zone Only)

73XX-4XXX-XXXX

 

 

 

 

 

73XX-6XXX-XXXX

73XX-4XXX-XXXX

 

Zone 1

 

Zone 2

1

 

 

 

 

4

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

+

 

5

 

 

+

 

 

 

-

 

 

 

-

 

3

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 10 -

2 or 3 Wire RTD Wiring.

RTD Input

73XX-2XXX-XXXX

73XX-5XXX-XXXX

Zone 1

3 Wire RTD

1

2

3

1

2

3

2 Wire RTD

(Dual Zone Only)

73XX-5XXX-XXXX

Zone 2

3 Wire RTD

4

5

6

4

5

6

2 Wire RTD

6

WATLOW Series 733/734 Service Manual

Install & Wire, Chapter 1

0-5VDCor0-10VDCProcess Input

Model # 73XX-6XXX-XXXX(Dual Zone Only)

Zone 2

4

+

5

-

6

Input Wiring

Figure 11 -

0-5VDCor0-10VDCProcess Input Wiring.

0-20mAor4-20mAProcess Input

Model # 73XX-6XXX-XXXX(Dual Zone Only)

Zone 2

-

4

IDC

5

6 +

Figure 12 - 0-20mAor4-20mAProcess Input Wiring.

Install & Wire, Chapter 1

WATLOW Series 733/734 Service Manual

7

Output 1 Wiring

Figure 13 -

AC Output 1 Wiring.

AC Output Wiring - Zone 1

Solid State Relay with

Mechanical Relay with

Contact Suppression

Contact Suppression

Form A, 0.4 Amps

Form A, 1 Amp

Off state impedance: 20K max.

Off state impedance: 20K min.

73XX-XBXX-XXXX

73XX-XDXX-XXXX

Solid State Relay without

Solid State Relay without

Contact Suppression

Contact Suppression

Form A, 0.4Amps

Form A, 1 Amp

Off state impedance: 31M max.

Off state impedance: 20k max.

73XX-XKXX-XXXX

73XX-XEXX-XXXX

1

4

7

10

8

11

2

5

 

3

6

9

12

 

COM

Fuse

L1

 

 

L2

 

External

 

Load

DC Output Wiring - Zone 1

Switched DC

 

(Open Collector)

4-20mAProcess Output

Non-isolated

Non-isolated

Minimum load resistance: 500

Load impedance: 600 max.

73XX-XCXX-XXXX

73XX-XFXX-XXXX

0-5VÅ(VDC) Process Output

 

Non-isolated

 

Load impedance: 10K min.

 

73XX-XHXX-XXXX

 

Figure 14 -

DC Output 1 Wiring.

-

+

1

4

7

10

8

11

2

5

 

3

6

9

12

 

+

External

-Load

8

WATLOW Series 733/734 Service Manual

Install & Wire, Chapter 1

AC Output Wiring - Zone 2

Solid State Relay with

 

 

 

Mechanical Relay with

Contact Suppression

 

 

 

Contact Suppression

Form A, 0.4 Amps

 

 

 

Form A, 1 Amp

Off state impedance: 20K max.

 

 

 

Off state impedance: 20K min.

73XX-XXBX-XXXX

 

 

 

73XX-XXDX-XXXX

Solid State Relay without

 

 

 

 

Contact Suppression

 

 

 

 

Form A, 04 Amps

 

 

 

 

Off state impedance: 31M max.

 

 

 

 

73XX-XXKX-XXXX

 

 

 

 

 

 

External

 

 

NO

 

Load

 

 

 

 

 

L2

 

 

 

 

 

 

 

 

 

 

COM

 

L1

 

 

 

Fuse

1

4

7

10

8

 

2

5

11

 

 

 

3

6

9

12

 

 

 

Output 2 Wiring

Figure 15 -

AC Output 2 Wiring.

DC Output Wiring - Zone 2

Switched DC

 

(Open Collector)

4-20mAProcess Output

Non-isolated

Non-isolated

Minimum load resistance: 500

Load impedance: 600 max.

73XX-XXCX-XXXX

73XX-XXFX-XXXX

0-5VÎ(VDC) Process Output

 

Non-isolated

 

Load impedance: 10K min.

 

73XX-XXHX-XXXX

 

 

+

 

 

 

External

 

-

Load

+

-

 

1

4

7

10

8

11

2

5

 

3

6

9

12

 

Figure 16 -

DC Output 2 Wiring.

Install & Wire, Chapter 1

WATLOW Series 733/734 Service Manual

9

Optional Wiring

˜

Event Input Wiring

2 Event Inputs

NOTE:

Event Input is not

Non-isolated

available on stan-

73XX-XXX1-XXXX

dard Series 733/734

 

controls. Consult

 

factory for more

 

information.

 

Figure 17 -

 

Event Input Wiring.

 

3 2 1

4

5

6

Event Input 1

7

8

Event Input 2 9

Common

Figure 18 -

Event Output

Wiring.

Event Output Wiring

 

 

 

 

4 Event Outputs

 

 

 

 

 

Open Collector, Non-isolated

 

 

 

 

5mA Maximum Per Event

 

 

 

 

73XX-XXX1-XXXX

 

 

Customer Supplied

 

 

 

Alarm

 

 

 

 

 

 

Event 1

 

 

-

 

 

 

 

 

 

 

SSR

 

 

Event 2

 

 

-

+

 

 

 

 

 

SSR

 

 

 

 

 

 

 

 

Event 3

 

-

+

 

1

4

7

 

 

 

 

 

SSR

 

 

 

Event 4

 

 

 

 

 

-

 

+

 

2 5

8

SSR

 

 

 

 

 

3 6

9

+

 

 

-

 

 

 

+

 

 

Internal +5 Volt

 

 

 

 

 

 

 

 

 

Figure 19 -

Alarm Wiring.

Alarm Wiring

Single Alarm Mechanical Relay with Contact Suppression Form A, 1 Amp 73XX-XXXX-DXXX

1 2

3

4 5

6

7

8

9

10

11

12

Fuse

COM L1

L2

External

Load

10

WATLOW Series 733/734 Service Manual

Install & Wire, Chapter 1

System Example

L1

 

 

 

 

 

 

 

 

 

 

 

L2

 

 

 

 

 

 

 

 

 

 

 

A001-0249-0001

 

 

 

 

 

 

 

 

Over

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Temp

 

 

 

 

 

 

 

 

 

 

 

Light

 

 

 

9

 

6

 

Coil

 

 

 

142A-36XX-1200

 

 

 

 

 

 

 

 

NC

NO

 

 

 

 

 

 

 

 

UL recognized

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

C

 

safety limit control

 

 

 

 

2

 

High Limit

 

 

 

 

 

 

 

 

Mechanical

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contactor

 

 

 

 

73XX-1CA0-AXXX

 

 

 

 

 

 

 

TC

 

 

 

 

L1

L2

Reset

(-)(+)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Limit

 

 

 

 

 

 

 

 

 

Normally Open

Sensor

 

 

 

 

 

 

 

 

 

 

Momentary

 

 

 

 

 

 

 

SSR-240-10G-DC1

 

Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(+)

 

(-)

 

 

 

3

 

(-)

 

 

 

 

 

 

 

 

 

2

(+)

 

 

 

 

Process Sensor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L2

 

1

 

 

 

 

 

A001-0249-0001

 

 

1

3

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

4

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

6

 

 

 

 

 

 

 

 

 

 

 

6

9

 

 

 

 

4

 

7

(+)

2

 

Series 733

 

 

 

 

 

 

 

 

 

73XX-1CA0-AXXX

 

 

 

 

5

 

8

(-)

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

2

 

 

 

 

6

 

 

 

 

9

10

 

 

 

 

 

 

 

 

 

 

(+)

SSR-240-10G-DC1

 

 

 

 

 

 

 

 

(-)

 

 

 

 

 

 

 

 

1 CR-1

 

 

 

 

 

 

7

1

11

 

12

 

13

Heater

2

 

 

 

 

 

 

 

8

1

14

 

 

L1

L2

 

2

 

9

 

 

 

Series 142

 

 

 

 

 

15

Reset

 

 

 

 

 

 

 

 

 

 

 

 

 

142A-36XX-1200

 

 

 

 

10

 

 

 

16

COM

 

 

 

 

 

 

 

UL recognized

 

 

 

 

 

 

 

 

 

 

 

 

11

 

 

 

17

TC (+)

safety limit control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

 

 

18

TC (-)

N.O.

 

 

 

 

13

 

 

 

 

 

19 1CR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

14

1

20

 

 

COM

N.C.

 

 

 

 

15

 

 

 

R

 

 

 

 

 

 

 

 

21

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hi Temp. Light

 

Figure 20 -

System Wiring

Example.

Figure 21 -

Series 733/734

Ladder Diagram

Example.

Install & Wire, Chapter 1

WATLOW Series 733/734 Service Manual

11

Setup

Chapter 2

The Setup Mode

Use the key sequence below to enter the Setup Mode.

Advancing Through The Setup Mode

Press the TIME key .

Select or Change Setup Data Within The Mode

Use the UP/DOWN keys . After 1 minute with no key activactions, the Series 733/734 reverts to the Operation mode [0)º0].

Figure 22 -

Setup Mode

Key Flow.

WATLW

EVENT READY LOAD 1

MENUS

1 2 3 4 5 6 7 8 9 10 11 12

SERIES 733

=Parameter may not appear depending on control configuration

=Only appears if your unit has communications. See the Series 733/734 data communications manual for more information.

˜

NOTE: Changing the

C_F, InP_, tS, rL_, rH_ parameters will default all menus.

 

C _ F

(

)

Celsius_Fahrenheit

 

gb

(

)

Guard band

 

rtd

(

)

RTD calibration curve

 

tcnP

(

)

Temperature comp. (WatCurve

 

tS

(

)

Menu time select

 

 

 

 

 

 

SIL

(

)

Alarm silence

 

LAt

(

)

Latching for alarm

 

InP1

(

)

Zone 1 input type

 

rL1

(

)

Zone 1 range lo

 

rH1

(

)

Zone 1 range hig

 

HyS1

(

)

Zone 1 hysteresis

 

AL1

(

)

Zone 1 alarm typ

 

A1LO

(

)

Zone 1 alarm lo

 

A1HI

(

)

Zone 1 alarm hig

 

 

 

 

 

 

CAL1

(

)

Zone 1 calibration offse

 

InP2

(

)

Zone 2 input type

 

rL2

(

)

Zone 2 range lo

 

rH2

(

)

Zone 2 range hig

 

HyS2

(

)

Zone 2 hysteresis

 

AL2

(

)

Zone 2 alarm typ

 

A2LO

(

)

Zone 2 alarm lo

 

A2HI

(

)

Zone 2 alarm hig

 

CAL2

(

)

Zone 2 calibration offse

 

bAUd

(

)

Baud rate

 

dAtA

(

)

Data bits and parity

 

Prot

(

)

Protocol type

 

Addr

(

)

Address

00 : 00

 

Operation Menu

12

WATLOW Series 733/734 Service Manual

Setup Mode, Chapter 2

Setup Parameters

Celsius_Fahrenheit: Selects the units of temperature measurement.

Range: F or C Default:F

Guard Band: Determines the process operating window (deviation) that both Zone 1 & 2 must be within before a menu is allowed to run. If you are within the guard band the READY LED is on and a menu can be run. It you are out of the guard band, the READY LED is OFF and the menu will not run.

Range: 1 to 4000°F/2222°CDefault: 4000°F/2222°C

RTD Calibration Curve: Selects the RTD calibration curve for RTD inputs. Appears if InP1 = rtd for Zone 1, or InP2 = rtd for Zone 2. This parameter only appears if you have a unit with RTD input.

JIS = 0.003916 / °C,

DIN = 0.003850 / °C

Range: din or JIS

Default: din

Temperature Compensation (WatCurve™): Automatically re-calculates and adjusts a menu cooking time as a result of a disturbance — such as, opening the oven door. WatCurve™ is a Watlow innovation. Enabled when tcnP = On.

Range: On or OFF

Default: OFF

 

 

 

 

3 Minutes

WatCurve™

 

 

Time

325°F/

 

 

 

°C

 

 

 

 

 

 

 

 

163°C

 

 

 

 

Temperature

Time

In this example, a process is running at 325°F/163°C. A basket of french fries is dropped into the oil, which dropped the process temperature to 240°F/116°C. The fries normally take 3 minutes to cook, but since the temperature dropped, the cooking time must be extended. WatCurve™ determines the amount of time which must be added in relation to the drop in process temperature and the rate of rise.

Time Select: Selects the time base used for the menu time, and remaining time for each zone. Can be expressed in either hours:minutesor minutes:seconds.

Range: hrnn or nnSc Default:nnSc

Alarm Silence: Enables or disables the alarm silence function. This parameter only appears if your unit has alarms, and AL1 no and

AL2 no.

 

Range: On or OFF

Default: OFF

Setup

Display alternates between parameter and programmed data.

C_F

F

gb

4000

rtd

din

tcnP

OFF

˜

NOTE:

Countdown time will speed up or slow down depending on WatCurve™ algorithm .

Figure 23 -

WatCurve™

Example.

˜

NOTE:

All menus will have the same time base (hours/minutes, or minutes/seconds).

tS

nnSc

SIL

OFF

Setup Mode, Chapter 2

WATLOW Series 733/734 Service Manual

13

Setup

Display alternates between parameter and programmed data.

LAt

nL

InP1

J

Alarm Latching: Selects whether the alarm output is latching ornon-latching.This parameter only appears if your unit has alarms, and AL1 no and AL2 no.

Range: LA or nL Default:nL

Input Type 1: Selects the sensor input type for Zone 1. Only those input types which are compatible with your unit will appear. See the model number information

on the inside back cover for your type.

 

Range: J, K (appears as H), E, rtd

Default: J orrtd

rL1

 

 

Range Low 1: Selects the low end of the operating range for Zone 1. This

 

 

parameter determines the low end of the set point and alarms. See the model

 

 

 

 

 

 

 

 

 

32number and specification information on the inside back cover, and Table 1 on Page 14 for sensor range values.

 

 

 

Range: Sensor range low to rH1

Default: Low limit of sensor type

 

 

 

Range High 1: Selects the high end of the operating range for Zone 1. This

rH1

 

 

parameter determines the high end of the set point and alarms. See the model

 

 

 

number and specification information on the inside back cover, and Table 1 on

 

1382

 

Page 14 for sensor range values.

 

 

 

 

 

 

 

 

 

 

 

 

Range: Sensor range high to rL1

Default: High limit of sensor type

HYS1

3

AL1

Pr

A1LO

32

A1HI

1382

CAL1

0

InP2

J

Hysteresis 1: Selects the switching hysteresis for Zone 1 when Pb1 = 0 (ON/ OFF). See Page 17 for the Pb1 parameter.

Range: 1 to 99°F/1 to 55°CDefault: 3°F

Alarm Type 1: Determines whether the alarm type for Zone 1 is process (Pr), deviation (dE), or none (no). A process alarm is set at an absolute temperature. A deviation alarm follows or tracks the set point. This parameter only appears if your unit has alarms.Range: Pr, dE, noDefault: Pr

Alarm 1 Low: Represents the low process alarm or low deviation alarm for Zone 1. This parameter only appears if your unit has alarms, and AL1 no.

If AL1

= dE:

Range:

0 to -999°F/0to-555°C

Default:

-999°F

If AL1

= Pr:

Range:

rL1 to A1HI

Default:

rL1

Alarm 1

High: Represents the high process alarm or high deviation alarm for

Zone 1.

This parameter only appears if your unit has alarms, and AL1 no.

If AL1 = dE: Range:

0 to 999°F/0 to 555°C

Default: 999°F

If AL1 = Pr: Range:

A1LO to rH1

Default: rH1

Calibration Offset 1: Adds or subtracts degrees from the Zone 1 input signal.Range: -99to99°F/-55to 55°CDefault: 0

Input Type 2: Selects the sensor input type for Zone 2. Only those input types which are compatible with your unit will appear. This parameter only appears if you have a dual zone control. See the model number information on the inside back cover and Table 1 on Page 6 for your input type.

Range: J, K (appears as H), Eor rtdor 0-5,420, 010, 020

Default: J orrtd or0-5

14

WATLOW Series 733/734 Service Manual

Setup Mode, Chapter 2

Setup

Range Low 2: Selects the low end of the operating range for Zone 2. This parameter determines the low end of the process input, set point and alarms. See the model number and specification information on the inside back cover, and Table 1 below for sensor range values. 0.0VDC, 0mA or 4mA represent Range Low (rL) for process inputs and outputs. The process input is linearly scaled between rL and rH.

This parameter only appears if you have a dual zone control. Range: Sensor range low to rH2Default: Low limit of sensor type

Display alternates between parameter and programmed data.

rL2

32

Range High 2: Selects the high end of the operating range for Zone 2. This parameter

 

 

 

determines the high end of the process input, set point and alarms. 5.0VDC, 10.0VDC,

rH2

 

or 20mA represent Range High (rH2) for process inputs and outputs. The process input

 

 

 

 

1382

is linearly scaled between rL and rH. This parameter only appears if you have a dual

 

zone control.

 

 

 

Range: Sensor range high to rL2Default: High limit of sensor type

 

 

 

Hysteresis 2: Selects the switching hysteresis for Zone 2 when Pb2 = 0 (ON/OFF). See Page 17 for the Pb2 parameter. This parameter only appears if you have a dual

zone control.

 

Range: 1 to 99°F/1 to 55°C/1 to 99 Units

Default: 3°F

Alarm Type 2: Determines whether the alarm type for Zone 2 is process (Pr), deviation (dE), or none (no). A process alarm is set at an absolute temperature. A deviation alarm follows or tracks the set point. This parameter only appears if you have a dual

zone control and has alarms.

 

Range: Pr, dE, no

Default: Pr

HYS2

3

AL2

Pr

Alarm 2 Low: Represents the low process alarm or low deviation alarm for Zone 2.

 

A2LO

This parameter only appears if you have a dual zone control, alarms, and AL2 no.

 

 

If AL2 = dE:

 

32

Range: 0 to-999°F/0to-555°C/0to-999Units

Default: -999°F

 

 

If AL2 = Pr:

 

 

Range: rL2 to A2HI

Default: rL2

Alarm 2 High: Represents the high process alarm or high deviation alarm for Zone 2. This parameter only appears if you have a dual zone control, alarms, and AL2 no.

If AL2 = dE:

 

Range: 0 to 999°F/0 to 555°C/0 to 999 Units

Default: 999°F

If AL2 = Pr:

 

Range: A2LO to rH2

Default: rH2

Calibration Offset 2: Adds or subtracts degrees from the Zone 2 input signal. This parameter only appears if you have a dual zone control.

Range: -99to99°F/-55to55°C/-99to 99 UnitsDefault: 0

Parameters that appear after CAL2 are related to data communications. For more informaton see How to Use Data Communications with the Watlow Series 733/734 .

A2HI

1382

CAL2

0

Input Type

Sensor Range Low

Sensor Range High

Table 1 -

 

 

 

Input Ranges.

J

32°F/0°C

1382°F/750°C

 

K (appears as H)

32°F/0°C

2282°F/1250°C

 

E

32°F/0°C

1220°F/660°C

 

rtd (1°)

32°F/0°C

1112°F/600°C

 

0-5or 010 (VDC)

-500

3500

 

020 or 420 (mA)

-500

3500

 

Setup Mode, Chapter 2

WATLOW Series 733/734 Service Manual

15

Setup

Table 2 -

Setup Mode

Setup Mode

Use this page as a master copy for your Series 733/734 Setup mode parameters.

Parameters and

Descriptions.

 

 

Do not enter any values here; make photocopies instead.

Parameter

Value

Range

Factory Default

Appears If:

 

 

 

 

 

 

 

C_F

 

C or F

F

 

 

gb

 

1 to 4000°F/2222°C

4000°F/2222°C

 

 

 

 

 

 

 

rtd

 

JIS or din

din

Input type is RTD

 

 

 

 

 

 

tncP

 

On or OFF

OFF

 

 

 

 

 

 

 

 

tS

 

hrnn or nnSc

nnSc

 

 

SIL

 

On or OFF

OFF

Unit has alarms,

 

 

 

 

 

AL1 no & AL2

no

 

 

 

 

 

 

LAt

 

LA or nL

nL

Unit has alarms,

 

 

 

 

 

AL1 no & AL2

no

 

 

 

 

 

InP1

 

J, K (appears as H), E or rtd

J or rtd

Dependent on model

 

 

 

 

number information

 

 

 

 

 

 

rL1

 

Sensor range low to rH1

Low limit sensor type

 

 

rH1

 

Sensor range high to rL1

High limit of sensor type

 

 

HYS1

 

1 to 99°F/1 to 55°C

3°F

 

 

AL1

 

Pr, dE or no

Pr

Unit has alarms

 

A1LO

 

If AL1 = dE: 0 to -999°F/

-999°F

Unit has alarms &

 

 

0 to -555°C

 

AL1 no

 

 

 

If AL1 = Pr: rL1 to A1HI

rL1

 

 

 

 

 

 

 

A1HI

 

If AL1 = dE: 0 to 999°F/

999°F

Unit has alarms &

 

 

0 to 555°C

 

AL1 no

 

 

 

If AL1 = Pr: A1LO to rH1

rH1

 

 

CAL1

 

-99to99°F/-55to55°C/-99to 99Units

0

 

 

InP2

 

J, K (appears as H), E or

J or rtdor 0-5

Dependent on model

 

 

rtd or 0-5,420, 010, 020

 

number information

 

 

 

 

 

rL2

 

Sensor range low to rH2

Low limit sensor type

Hardware is present

 

 

 

 

 

rH2

 

Sensor range high to rL2

High limit of sensor type

Hardware is present

 

 

 

 

 

HYS2

 

1 to 99°F/1 to 55°C/ 1 to 99 units

3°F

Hardware is present

 

 

 

 

 

AL2

 

Pr, dE or no

Pr

Hardware is present

A2LO

 

If AL2 = dE: 0 to -999°F/

-999°F

Hardware is present &

 

 

0 to -555°C/0to-999Units

 

AL2 no

 

 

 

If AL2 = Pr: rL2 to A2HI

rL2

 

 

 

 

 

 

 

A2HI

 

If AL2 = dE: 0 to 999°F/

999°F

Hardware is present &

 

 

0 to 555°C/0 to 999 Units

 

AL2 no

 

 

 

If AL2 = Pr: A2LO to rH2

rH2

 

 

 

 

 

 

 

CAL2

 

-99to99°F/-55to55°C/-99to 99Units

0

Hardware is present

 

 

 

 

 

 

16

WATLOW Series 733/734 Service Manual

Setup Mode, Chapter 2

Chapter 3

The Service Mode

Enter the Service mode by pressing the key sequence illustrated below.

The display shows the [AUt1] parameter.

Move through the Service mode by pressing the TIME key .

Use the UP/DOWN keys to select data. After 1 minute without key activations, the Series 733/734 reverts to the Operation mode [0)º0].

=Parameter may not appear depending on control configuration

WATLW

EVENT READY LOAD 1

MENUS

1 2 3 4 5 6 7 8 9 10 11 12

SERIES 733

AUt1

(

)

Auto-tune1

 

 

 

 

AUt2

(

)

Auto-tune2

Pb1

(

)

Proportional Band 1

 

 

 

 

rE1

(

)

Reset 1

rA1

(

)

Rate 1

Ct1

(

)

Cycle time 1

Pb2

(

)

Proportional band 2

rE2

(

)

Reset 2

rA2

(

)

Rate 2

Ct2

(

)

Cycle time 2

StP

(

)

Maximum steps

 

 

 

LooP

(

)

Loop fail check

nnS

(

)

Melt cycle

 

 

 

00 : 00

 

Operation Menu

Service

Figure 23 -

Service Mode

Key Flow.

Service Mode, Chapter 3

WATLOW Series 733/734 Service Manual

17

Service

Display alternates between parameter and programmed data.

AUt1

0

AUt2

0

Pb1

25

Service Parameters

Auto-tune Zone 1: Initiatesauto-tunefor Zone 1. For more information on tuning,

see Chapter 4, Page 19.

 

Range: 0 = off, 1 = slow, 2 = medium, 3 = fast

Default: 0

Auto-tune Zone 2: Initiatesauto-tunefor Zone 2. For more information on tuning,

see Chapter 4, Page 19.

 

Range: 0 = off, 1 = slow, 2 = medium, 3 = fast

Default: 0

Proportional Band 1: A proportional band expressed in degrees F or C, within which a controller proportioning function is active for Zone 1. When Pb1 = 0, it functions as an ON/OFF control. The switching differential is then determined by

the HYS1 parameter in the Setup mode. See Page 15.

 

Range: 0 to 999°F/0 to 555°C

Default: 25°F

rE1

0.00

rA1

0.00

Ct1

5

Pb2

25

rE2

0.00

Reset 1: A reset (integral) control action for Zone 1 automatically eliminates offset, or "droop," between set point and actual process temperature in a proportional

control.

This parameter only appears if Pb1

0.

Range:

0.00 to 9.99 repeats/minute

Default: 0.00

Rate 1: The rate (derivative) function for Zone 1 which affects the speed or rate at which the process temperature approaches the set point to minimize overshoot and/or undershoot. The rate is determined by how fast the error is changing. This

parameter only appears if Pb1

0.

Range: 0.00 to 9.99 minutes

Default: 0.00

Cycle Time 1: Expressed in seconds, time for a controller to complete one ON/ OFF cycle for Zone 1. Time between successive turn ons. This parameter only

appears if Pb1 0.

 

Range: 1 to 60 seconds

Default: 5

Proportional Band 2: A proportional band expressed in degrees or process units, within which a controller proportioning function is active for Zone 2. When Pb2 = 0, it functions as an ON/OFF control. The switching differential is then determined by the HYS2 parameter. This parameter only appears if you have a dual zone control.Range: 0 to 999°F/0 to 555°C/0 to 999 unitsDefault: 25°F

Reset 2: A reset (integral) control action for Zone 2 automatically eliminates offset, or "droop," between set point and actual process temperature in a proportional control. This parameter only appears if your unit has a secondary output and Pb2

0.

 

Range: 0.00 to 9.99 repeats/minute

Default: 0.00

rA2

Rate 2: The rate (derivative) function for Zone 2 which affects the speed or rate at

which the process temperature approaches the set point to minimize overshoot

 

0.00and/or undershoot. The rate is determined by how fast the error is changing. This

parameter only appears if your unit has a secondary output and Pb2 0. Range: 0.00 to 9.99 minutesDefault: 0.00

18

WATLOW Series 733/734 Service Manual

Service Mode, Chapter 3

Service

Display alternates between parameter and programmed data.

Cycle Time 2: Expressed in seconds, time for a controller to complete one ON/ OFF cycle for Zone 2. Time between successive turn ons. This parameter only appears if you have a dual zone control, and Pb2 0.

Range: 1 to 60 secondsDefault: 5

Menu Steps: Determines the maximum number of steps allowed in a menu.

Range: 1 to 3 Default:3

Loop Fail Check: This parameter checks for an open or shorted sensor and enables the error code function. This parameter only functions in the proportional

control mode (Pb1

0 /ON/OFF).

Range: On or OFF

Default: OFF

Melt Cycle: Enable or disables the melt cycle function. When enabled and the process value is less than 212°F/100°C, the corresponding zone output will go to a

percent power duty cycle.

 

Range: On or OFF

Default: OFF

Ct2

5

StP

3

LooP

OFF

nnS

OFF

Service Mode

 

 

 

Table 3 -

Use this page as a master copy for your Series 733/734 Service mode parameters.

Service Mode

Parameters and

 

 

 

 

 

Do not enter any values here; make photocopies instead.

 

 

Descriptions.

 

 

 

 

 

 

 

 

 

 

Parameter

Value

Range

Factory Default

Appears If:

 

 

 

 

 

 

 

AUt1

 

0 - 3

0

 

 

 

AUt2

 

0 - 3

0

 

Hardware is present

 

 

 

 

 

 

 

Pb1

 

0 to 999°F/0to 555·C

25°F

 

 

 

 

 

 

 

 

 

rE1

 

0.00 to 9.99 repeats/minute

0.00

 

Pb1

0

 

 

 

 

 

 

 

rA1

 

0.00 to 9.99 minutes

0.00

 

Pb1

0

Ct1

 

1 to 60 seconds

5

 

Pb1

0

Pb2

 

0 to 999°F/0 to 555°C/0 to 999 Units

25°F

Hardware is present

 

 

 

 

 

 

rE2

 

0.00 to 9.99 repeats/minute

0.00

 

Hardware is present

 

 

 

 

 

Pb2

0

rA2

 

0.00 to 9.99 minutes

0.00

 

Hardware is present

 

 

 

 

 

Pb2

0

Ct2

 

1 to 60 seconds

5

 

Hardware is present

 

 

 

 

 

Pb2

0

StP

 

1 to 3

3

 

 

 

LooP

 

On or OFF

OFF

 

 

 

 

 

 

 

 

 

nnS

 

On or OFF

OFF

 

 

 

 

 

 

 

 

 

Service Mode, Chapter 3

WATLOW Series 733/734 Service Manual

19

Tuning

˜

NOTE:

An X applies to either Zone 1 or Zone 2.

˜

NOTE:

In dual zone applications, allow Zone 1 to complete before tuning Zone 2.

Chapter 4

Tuning

Auto-tuning

Auto-tuningapplies to Zone 1 or 2.

The auto-tuningprocedure operates on a thermal response value — slow, medium, or fast. Use the slow thermal response when your process does not reach set point too rapidly, or if it usually does not exceed set point a lot. A fast thermal response produces a rapid temperature change over a short period of time.

Once the auto-tunesequence has begun, the Zone 1 or 2 proportional band is set to 0 and the control goes into an ON/OFF mode of control at 90% of the established set point. The displayed set point remains unchanged. The display alternates between At _ and the current parameter.

Once the control learns the thermal system response, it returns to a standard PID control using the PID values automatically set as a result of auto-tuning.Any change of the set point, while inauto-tune,re-initiatestheauto-tuneprocedure.

In order for the 733/734 to successfully complete auto-tune,the process must cross the 90% value of set point four times within 80 minutes afterauto-tunehas started. If this does not happen within the 80 minute time limit, the Pb remains at 0 and the control functions in an ON/OFF mode.

Figure 24 -

Auto-tuningat a Set

Point of 200°F.

 

 

Auto-tune

Auto-tune

 

 

Begins

Complete

 

200

 

Set Point

 

180

 

 

°Temp

 

 

Process

 

90% of

 

 

 

 

 

100

Set Point

 

 

 

 

°Time

To start auto-tuning:

1. Enter the Service mode by pressing the key sequence.

[AUt1] appears in the display.

To auto-tuneZone 2, press the Time keyand [AUt2] appears.

20 WATLOW Series 733/734 Service Manual

Tuning, Chapter 4