Page 2 - Contents; Technical Assistance
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 forconfiguring, servicing and calibrating your control. Use this manual in conjunc-tion with the Series 733/734 Program Manual and Data Communications manual. ...
Page 3 - Install; Panel Cutout
3 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Install Chapter 1Install and Wire the Series 733/734 Front panel mounting for ease of installation and service. Series 734 Figure 1 -Series 733 and 734Dimensions. ˜ NOTE:For Series 734orientation (verti-cal), rotate the panelcutout...
Page 4 - Wiring
4 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Wiring Figure 6 -Series 733/734Rear 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 op...
Page 5 - Power Wiring
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 potentialelectric shock, useNational ElectricCode (NEC) safetypractices whenwiring and connect-ing this unit to apower source ...
Page 6 - Input Wiring; Thermocouple Input; Wire RTD; RTD Input
6 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Input Wiring Figure 10 -2 or 3 Wire RTDWiring. Figure 9 -ThermocoupleWiring. ˜ NOTE:Dual-zone thermo-couple units requireat least one un-groundedthermocouple. 1 2 3 + - 4 5 6 + - Thermocouple Input 73XX- 1 XXX-XXXX ˜ (Dual Zone Onl...
Page 8 - Output 1 Wiring; AC Output Wiring - Zone 1
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...
Page 9 - Output 2 Wiring; AC Output Wiring - Zone 2
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 w...
Page 10 - Optional Wiring; Event Input Wiring
10 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Optional Wiring Figure 18 -Event OutputWiring. Figure 19 -Alarm Wiring. ˜ NOTE:Event Input is notavailable on stan-dard Series 733/734controls. Consultfactory for moreinformation. Figure 17 -Event Input Wiring. 1 2 3 4 5 6 7 8 9 E...
Page 11 - System Example
11 WATLOW Series 733/734 Service Manual Install & Wire, Chapter 1 Figure 20 -System WiringExample. Figure 21 -Series 733/734Ladder DiagramExample. 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 safe...
Page 12 - Setup; Advancing Through The Setup Mode; Select or Change Setup Data Within The Mode
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 communicationsmanual for more information. SERIES 733 TL W WA 8 10 12 1 3 5 2 4 6 7 9 11 EVENT...
Page 13 - Setup Parameters
13 Setup Mode, Chapter 2 WATLOW Series 733/734 Service Manual Setup Figure 23 -WatCurve™Example. F ˜ NOTE:Countdown time willspeed up or slowdown depending onWatCurve™ algo-rithm . Display alternatesbetween parameter andprogrammed data. C_F gb 4000 rtd din tcnP OFF Temperature 325°F/ °C Time WatCurv...
Page 14 - Default: Low limit of sensor type
14 WATLOW Series 733/734 Service Manual Setup Mode, Chapter 2 Setup Display alternatesbetween parameter andprogrammed 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 app...
Page 15 - Input Type; How to Use Data Communications with the Watlow Series 733/734 .
15 Setup Mode, Chapter 2 WATLOW Series 733/734 Service Manual Setup Table 1 -Input Ranges. Display alternatesbetween parameter andprogrammed 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 1...
Page 16 - Parameter; Setup Mode; Do not enter any values here make photocopies instead.
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 o...
Page 17 - Service
17 Service Mode, Chapter 3 WATLOW Series 733/734 Service Manual Service Figure 23 -Service ModeKey Flow. Chapter 3The 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 . U...
Page 18 - Service Parameters
18 WATLOW Series 733/734 Service Manual Service Mode, Chapter 3 Service Display alternatesbetween parameter andprogrammed 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,se...
Page 19 - Service Mode
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...
Page 20 - Tuning; Enter the Service mode by pressing the key sequence
20 WATLOW Series 733/734 Service Manual Tuning, Chapter 4 Tuning Figure 24 -Auto-tuning at a SetPoint of 200°F. ˜ NOTE:An X applies toeither Zone 1 orZone 2. ˜ NOTE:In dual zone applica-tions, allow Zone 1to complete beforetuning Zone 2. Chapter 4Tuning Auto-tuning Auto-tuning applies to Zone 1 or 2...
Page 21 - Manual Tuning
Tuning, Chapter 4 WATLOW Series 733/734 Service Manual 21 Tuning ˜ NOTE:Tune each zone ata set point aboveambient 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 mostthermal systems. 3. When tu...
Page 22 - Calibration
22 WATLOW Series 733/734 Service Manual Calibration, Chapter 5 Chapter 5The Calibration Mode Before attempting to calibrate, make sure you have the properequipment called for in each procedure. Use the key sequence below to enter the Calibration Mode. In the Calibration Mode, various input signals m...
Page 23 - Before attempting to calibrate,; Calibration Parameters
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 Calibr...
Page 24 - Restoring Factory Calibration; Keyboard: Used to read all the keys in hexadecimal.
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. Ifyou calibrate your control incorrectly, you have the option to default to the originalvalue...
Page 25 - OR
Calibration, Chapter 5 25 WATLOW Series 733/734 Service Manual T/C Calibration Calibration ˜ NOTE:Before calibrationon an installedcontrol, make sureall data and param-eters are docu-mented. See Setup,and Service Tables,Pages16 and 19. ˜ NOTE:Always press theTime key to advanceto the next param-eter...
Page 26 - RTD Calibration; Setup And Calibration
26 WATLOW Series 733/734 Service Manual Calibration, Chapter 5 RTD Calibration ˜ ˜ NOTE:Before calibrationon an installedcontrol, make sureall data and param-eters are docu-mented. See Setup,and Service Tables,Pages16 and 19. ˜ NOTE:Always press theTime key to advanceto the next param-eter before ch...
Page 27 - Thermocouple/Process Input Field Calibration Procedure
Calibration, Chapter 5 27 WATLOW Series 733/734 Service Manual T/C-Process Input ˜ NOTE:Before calibrationon an installedcontrol, make sureall data and param-eters aredocumented. SeeSetup and ServiceTables, Pages 16and 19. ˜ NOTE:Always press theTime key to advanceto the next param-eter before chang...
Page 28 - Zone 1 4-20mA Output Field Calibration Procedure
28 WATLOW Series 733/734 Service Manual Calibration, Chapter 5 4-20mA Output ˜ NOTE:Before calibrationon an installedcontrol, make sureall data and para-meters are docu-mented. See Setupand Service Tables,Pages 16 and 19. The calibration procedure for Zone 1 and Zone 2 are the sameexcept use the Ot2...
Page 29 - (VDC) Output Field Calibration Procedure
Calibration, Chapter 5 29 WATLOW Series 733/734 Service Manual 0-5V Output ˜ NOTE:Before calibrationon an installedcontrol, make sureall data and para-meters are docu-mented. See Setupand Service Tables,Pages 16 and 19. The calibration procedure for Zone 1 and Zone 2 are the sameexcept use the Ot2L ...
Page 30 - Alarm Silence: Disables the alarm relay output.
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 droppedbelow a predetermined alarm set point. Alarm Silence: Disables the alarm relay output. Anti-reset: Control feature that inhibits automatic...
Page 31 - Open loop: System with no sensory feedback.
Appendix 31 WATLOW Series 733/734 Service Manual Glossary, I - Z Integral: Control action that automatically eliminatesoffset, or “droop,” between set point and actualprocess temperature. Also "reset." Isolation: Electrical separation of sensor or otherdevice from high voltage circuitry. All...
Page 32 - Index
Appendix 32 WATLOW Series 733/734 Service Manual AAdvancing Through Setup, 12Alarm, Parameters, 14 - 16Wiring, 10 Appendix, 30Auto-tuning, 20 CCalibration,22 - 29Changing Setup Data, 12 DDC Output 1 Wiring, 8DC Output 2 Wiring, 9Default Parameters, Service, 19, Table 3Setup, 16, Table 2 Dimensions, ...
Page 33 - Warranty; Shipping Claims
Appendix 33 WATLOW Series 733/734 Service Manual Warranty The Watlow Series 733/734 is warranted to be freeof defects in material and workmanship for 36months after delivery to the first purchaser for use,providing that the units have not been misapplied.This excludes mechanical relays which are war...
Page 34 - Specific
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 HYSX parameter for Outputs 1 and 2. • PID Parameters: • Propo...
Page 35 - Model Number
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 Orientation3 = Horizontal 4 = Vertical Display LocationA = Integr...
Page 36 - Declaration of Conformity; WATLOW CONTROLS; Electromagnetic Compatibility Directive
Declaration of Conformity WATLOW CONTROLS 124 1 Bundy Boulevard Winona, Minnesota 55987 USA Declares that the following product: Designation:Model Number:Classification: Series 733 Electronic Incorporated Class temperature controller,Type 2C action, for use in industrial environment Rated Voltage: (...
Page 37 - Notes
Appendix 37 WATLOW Series 733/734 Service Manual Notes
