Instruction/ maintenance manual of the product 734 Watlow Electric
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0600-0008-0000 Rev D November 1995 Supersedes without change: W733-XSMN Rev D00 $10.00 Made in the U.S.A. T ime/T emperature Control Total Customer Satisfaction 3 Year Warranty Series 733/734 Watlow Controls, 1241 Bundy Blvd.
2 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 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 conjunc- tion with the Series 733/734 Program Manual and Data Communications manual.
3 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. Series 734 Figure 1 - Series 733 and 734 Dimensions. ˜ NOTE: For Series 734 orientation (verti- cal), rotate the panel cutout 90°.
4 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Wiring Figure 6 - Series 733/734 Rear View. 9-pin Event Input/ Output Connector 12-pin Output Wiring Connector Input/ Communications Connector How to Wire the Series 733/734 The Series 733/734 wiring is illustrated by model number option.
5 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Wiring Figure 8 - Input Wiring Con- nector. Figure 7 - 24V Å Å Å Å Å (VAC) Power Wiring.
6 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Input Wiring Figure 10 - 2 or 3 Wire RTD Wiring. Figure 9 - Thermocouple Wiring. ˜ NOTE: Dual-zone thermo- couple units require at least one un- grounded thermocouple.
7 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Input Wiring Figure 11 - 0-5VDC or 0-10VDC Process Input Wiring. Figure 12 - 0-20mA or 4-20mA Process Input Wiring.
8 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Output 1 Wiring Figure 14 - DC Output 1 Wiring. Figure 13 - AC Output 1 Wiring. 1 2 3 4 5 6 7 8 9 10 11 12 - External Load + - + 1 .
9 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Output 2 Wiring Figure 16 - DC Output 2 Wiring. Figure 15 - AC Output 2 Wiring. 1 2 3 4 5 6 7 8 9 10 11 12 External Load + - - + 1 .
10 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Optional Wiring Figure 18 - Event Output Wiring. Figure 19 - Alarm Wiring. ˜ NOTE: Event Input is not available on stan- dard Series 733/734 controls. Consult factory for more information.
11 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Figure 20 - System Wiring Example. Figure 21 - Series 733/734 Ladder Diagram Example.
12 WATLOW Series 733/734 Service Manual Setup Mode, Chapter 2 Setup = Parameter may not appear depending on control configuration = Only appears if your unit has communications.
13 Setup Mode, Chapter 2 WATLOW Series 733/734 Service Manual Setup Figure 23 - WatCurve™ Example. F ˜ NOTE: Countdown time will speed up or slow down depending on WatCurve™ algo- rithm .
14 WATLOW Series 733/734 Service Manual Setup Mode, Chapter 2 Setup Display alternates between parameter and programmed data. LAt nL InP1 J rL1 32 rH1 1382 AL1 Pr A1LO 32 A1HI 1382 HYS1 3 CAL1 0 InP2 J Alarm Latching: Selects whether the alarm output is latching or non-latching.
15 Setup Mode, Chapter 2 WATLOW Series 733/734 Service Manual Setup Table 1 - Input Ranges. Display alternates between parameter and programmed data. Input Type Sensor Range Low Sensor Range High J 32.
16 WATLOW Series 733/734 Service Manual Setup Mode, Chapter 2 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 RT.
17 Service Mode, Chapter 3 WATLOW Series 733/734 Service Manual Service Figure 23 - Service Mode Key Flow. 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 .
18 WATLOW Series 733/734 Service Manual Service Mode, Chapter 3 Service Display alternates between parameter and programmed data. 0 AUt1 AUt2 0 Pb1 25 rE1 0.00 rA1 0.00 Ct1 5 Pb2 25 rE2 0.00 0.00 rA2 Service Parameters Auto-tune Zone 1: Initiates auto-tune for Zone 1.
19 Service Mode, Chapter 3 WATLOW Series 733/734 Service Manual 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.
20 WATLOW Series 733/734 Service Manual Tuning, Chapter 4 T uning Figure 24 - Auto-tuning at a Set Point of 200°F. ˜ NOTE: An X applies to either Zone 1 or Zone 2. ˜ NOTE: In dual zone applica- tions, allow Zone 1 to complete before tuning Zone 2. Chapter 4 T uning Auto-tuning Auto-tuning applies to Zone 1 or 2.
Tuning, Chapter 4 WATLOW Series 733/734 Service Manual 21 T uning ˜ NOTE: Tune each zone at a set point above ambient tempera- ture. 2. Select a thermal response value using the UP/DOWN keys, 1=slow, 2=me- dium, and 3=fast. A thermal response value of 2 satisfactorily tunes most thermal systems.
22 WATLOW Series 733/734 Service Manual Calibration, Chapter 5 Chapter 5 The Calibration Mode Before attempting to calibrate, make sure you have the proper equipment called for in each procedure. Use the key sequence below to enter the Calibration Mode.
Calibration, Chapter 5 23 WATLOW Series 733/734 Service Manual Calibration ç Before attempting to calibrate, make sure you have the proper equipment called for in each procedure. The Series 733/734 is calibrated and tested before leaving the factory.
24 WATLOW Series 733/734 Service Manual Calibration, Chapter 5 rSt LgOt Calibration LI HEy dISP Restoring Factory Calibration The rSt parameter restores the factory calibration values to the Series 733/734. If you calibrate your control incorrectly, you have the option to default to the original values.
Calibration, Chapter 5 25 WATLOW Series 733/734 Service Manual T/C Calibration Calibration ˜ NOTE: Before calibration on an installed control, make sure all data and param- eters are docu- mented.
26 WATLOW Series 733/734 Service Manual Calibration, Chapter 5 R TD Calibration ˜ ˜ NOTE: Before calibration on an installed control, make sure all data and param- eters are docu- mented.
Calibration, Chapter 5 27 WATLOW Series 733/734 Service Manual T/C-Process Input ˜ NOTE: Before calibration on an installed control, make sure all data and param- eters are documented. See Setup and Service Tables, Pages 16 and 19. ˜ NOTE: Always press the Time key to advance to the next param- eter before chang- ing the calibration equipment.
28 WATLOW Series 733/734 Service Manual Calibration, Chapter 5 4-20mA Output ˜ NOTE: Before calibration on an installed control, make sure all data and para- meters are docu- mented. See Setup and Service Tables, Pages 16 and 19. The calibration procedure for Zone 1 and Zone 2 are the same except use the Ot2L and Ot2H parameters for Zone 2.
Calibration, Chapter 5 29 WATLOW Series 733/734 Service Manual 0-5V Output ˜ NOTE: Before calibration on an installed control, make sure all data and para- meters are docu- mented. See Setup and Service Tables, Pages 16 and 19. The calibration procedure for Zone 1 and Zone 2 are the same except use the Ot2L and Ot2H parameters for Zone 2.
Appendix 30 WATLOW Series 733/734 Service Manual Glossary , A - I Alarm: A condition, generated by a controller, indicating that the process has exceeded or dropped below a predetermined alarm set point. Alarm Silence: Disables the alarm relay output.
Appendix 31 WATLOW Series 733/734 Service Manual Glossary , I - Z Integral: Control action that automatically eliminates offset, or “droop,” between set point and actual process temperature. Also "reset." I solation: Electrical separation of sensor or other device from high voltage circuitry.
Appendix 32 WATLOW Series 733/734 Service Manual A Advancing Through Setup, 12 Alarm, Parameters, 14 - 16 Wiring, 10 Appendix, 30 Auto-tuning, 20 C Calibration,22 - 29 Changing Setup Data, 12 D DC Out.
Appendix 33 WATLOW Series 733/734 Service Manual Warranty The Watlow Series 733/734 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.
Appendix 34 WATLOW Series 733/734 Service Manual Specific Specifications Control Mode • Single or dual input, single or dual output, single alarm. • EIA/TIA-422A, EIA/TIA-423A, or EIA/TIA-485 data communications. • ON/OFF: Determined by the HYS X parameter for Outputs 1 and 2.
Appendix 35 WATLOW Series 733/734 Service Manual Model Number 733/734 = One or two channel microprocessor-based, time and temperature control; 24V Å (VAC) power input.
Declaration of Conformity WATLOW CONTROLS 124 1 Bundy Boulevard Winona, Minnesota 55987 USA Declares that the following product: Designation: Model Number: Classification: Series 733 I734 733A-4BB l-A.
Appendix 37 WATLOW Series 733/734 Service Manual Notes.
Appendix 38 WATLOW Series 733/734 Service Manual Notes.
Appendix 39 WATLOW Series 733/734 Service Manual.
Appendix 40 WATLOW Series 733/734 Service Manual Watlow Series 733/734 Service Manual Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580, 507/454-5300, Fax: 507/452-4507.
An important point after buying a device Watlow Electric 734 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Watlow Electric 734 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Watlow Electric 734 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Watlow Electric 734 you will learn all the available features of the product, as well as information on its operation. The information that you get Watlow Electric 734 will certainly help you make a decision on the purchase.
If you already are a holder of Watlow Electric 734, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Watlow Electric 734.
However, one of the most important roles played by the user manual is to help in solving problems with Watlow Electric 734. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Watlow Electric 734 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
