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Watlow Electric 733 - page 1
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., P.O. BOX 5580, Winona, MN 55987-5580, Phone: 507/454-5300, Fax: 507/452-4507 Service Manual ...
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Watlow Electric 733 - page 2
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. Contents T echnical Assistance If you encounter ...
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Watlow Electric 733 - page 3
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°. Figure 2 - Panel Cutout. 1.975 (50 ...
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Watlow Electric 733 - page 4
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. Check the terminal designation sticker on ...
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Watlow Electric 733 - page 5
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. ∫ WARNING: To avoid potential electric shock, use National Electric Code (NEC) safety practices when wiring and connect- ing this unit to a power source and to electrical sensors or per ...
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Watlow Electric 733 - page 6
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. 1 2 3 + - 4 5 6 + - Thermocouple Input 73XX- 1 XXX-XXXX ˜ (Dual Zone Only) 73XX- 4 XXX-XXXX 73XX- 6 XXX-XXXX 73 ...
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Watlow Electric 733 - page 7
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. 4 5 6 + - DC I 4 5 6 + - Zone 2 Zone 2 0-5VDC or 0-10VDC Process Input Model # 73XX- 6 XXX-XXXX (Dual Zone Only) 0-20mA or 4-20mA Process Input Model # 73XX- 6 XXX-X ...
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Watlow Electric 733 - page 8
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 2 3 4 5 6 7 8 9 10 11 12 External Load COM L1 L2 Fuse AC Output Wiring - Zone 1 Solid State Relay with Mechanical Relay with Contact Suppression Conta ...
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Watlow Electric 733 - page 9
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 2 3 4 5 6 7 8 9 10 11 12 External Load COM L1 L2 Fuse NO AC Output Wiring - Zone 2 Solid State Relay with Mechanical Relay with Contact Suppression Co ...
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Watlow Electric 733 - page 10
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. Figure 17 - Event Input Wiring. 1 2 3 4 5 6 7 8 9 Event Input 2 Common Event Input 1 1 2 3 ...
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Watlow Electric 733 - page 11
11 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Figure 20 - System Wiring Example. Figure 21 - Series 733/734 Ladder Diagram Example. System Example L1 L2 SSR-240-10G-DC1 TC (+) (-) 2 3 Process Sensor Limit Sensor Coil Normally Open Momentary Switch 142A-36XX-1200 UL recognized safety limit control (+) (-) Reset L2 (+) (-) Hig ...
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Watlow Electric 733 - page 12
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. See the Series 733/734 data communications manual for more information. SERIES 733 TL W W A 81 0 1 2 1 3 5 2 4 6 7 9 11 EVENT LOAD 1 READY MENUS Celsius_Fahrenhei t Guard b ...
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Watlow Electric 733 - page 13
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 . Display alternates between parameter and programmed data. C_F gb 4000 rtd din tcnP OFF Temperature 325°F/ °C Time WatCurve™ Time 3 Minutes 163°C tS nnSc ...
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Watlow Electric 733 - page 14
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. This parameter only appears if your unit has alarms, and AL1 no and AL ...
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Watlow Electric 733 - page 15
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°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 0-5 or 010 (VDC) - ...
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Watlow Electric 733 - page 16
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 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 ...
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Watlow Electric 733 - page 17
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 . Use the UP/DOWN keys to select data. After 1 min ...
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Watlow Electric 733 - page 18
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. For more information on tuning, see Chapter 4, Page 19. Range: 0 = off, 1 = slow, ...
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Watlow Electric 733 - page 19
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 0.00 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 H ...
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Watlow Electric 733 - page 20
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. The auto-tuning procedure operate ...
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Watlow Electric 733 - page 21
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. 3. When tuning is complete, the display returns to i ...
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Watlow Electric 733 - page 22
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. In the Calibration Mode, various input signals must be supplied in order for the control to go t ...
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Watlow Electric 733 - page 23
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. CALy InLO InHI nAHI tC Ot1L Ot1H Ot2L Ot2H Calibration Parameters Calibrate: Determines which para ...
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Watlow Electric 733 - page 24
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. Once you leave the CAL menu, the values are e ...
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Watlow Electric 733 - page 25
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. See Setup, and Service Tables, Pages16 and 19. ˜ NOTE: Always press the Time key to advance to the next param- eter before chang- ing the calibration e ...
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Watlow Electric 733 - page 26
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. See Setup, and Service Tables, Pages16 and 19. ˜ NOTE: Always press the Time key to advance to the next param- eter before chang- ing the calibration equipment ...
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Watlow Electric 733 - page 27
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. ˜ ...
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Watlow Electric 733 - page 28
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. Zone 1 ...
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Watlow Electric 733 - page 29
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. Zone 1 0 ...
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Watlow Electric 733 - page 30
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. Anti-reset: Control feature that inhibits automatic reset action outside the proportional band. Al ...
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Watlow Electric 733 - page 31
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. Allows for applica- tion of grounded or un ...
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Watlow Electric 733 - page 32
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 Output 1 Wiring, 8 DC Output 2 Wiring, 9 Default Parameters, Service, 19, Table 3 Setup, 16, Table 2 Dimensions, 3 E Event Input Wiring, 10 Event Output ...
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Watlow Electric 733 - page 33
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. This excludes mechanical relays which are war- ranted for 100,000 cycles. Since Watlow has ...
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Watlow Electric 733 - page 34
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. • PID Parameters: • Proportional band: 0 to 999°F/0 to 555°C ...
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Watlow Electric 733 - page 35
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. *Order power supply and connector kit(s) separately below. Display Orientation 3 = Horizontal 4 = Vertical Display Location A = Integral (local) Input Type 1 = Single thermocouple ( ...
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Watlow Electric 733 - page 36
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-AAAG Electronic Incorporated Class III temperature controller, Type 2C action, for use in light industrial environment Rated Voltage: 24V- (VAC) Rated ...
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Watlow Electric 733 - page 37
Appendix 37 WATLOW Series 733/734 Service Manual Notes ...
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Watlow Electric 733 - page 38
Appendix 38 WATLOW Series 733/734 Service Manual Notes ...
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Watlow Electric 733 - page 39
Appendix 39 WATLOW Series 733/734 Service Manual ...
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Watlow Electric 733 - page 40
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 ...
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