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Watlow 94 Series User Manual

1/16 din limit controller
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Series 94
User's Manual
1/16 DIN Limit Controller
FM
TOTAL
CUSTOMER
SATISFACTION
3 Y ear Warranty
ISO 9001
Registered Company
Winona, Minnesota USA
1241 Bundy Blvd., P.O. Box 5580, Winona, Minnesota USA 55987-5580
Phone: (507) 454-5300, Fax: (507) 452-4507 http://www.watlow.com
Made in the U.S.A.
0600-0024-0000 Rev C
June 2002
$10.00
Supersedes 0600-0024-0000 Rev B

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  • Page 1 3 Y ear Warranty ISO 9001 Registered Company Winona, Minnesota USA 1241 Bundy Blvd., P.O. Box 5580, Winona, Minnesota USA 55987-5580 Phone: (507) 454-5300, Fax: (507) 452-4507 http://www.watlow.com Made in the U.S.A. 0600-0024-0000 Rev C June 2002 $10.00 Supersedes 0600-0024-0000 Rev B...
  • Page 2 CAUTION or WARNING safety statement. Technical Assistance If you encounter a problem with your Watlow controller, review all of your configuration information for each step of the setup to verify that your selections are consistent with your applications.

  • Page 3: Table Of Contents

    Restoring Factory Calibration ......... A.4 Quick Reference Sheet .........A.13-A.14 Calibration Menu ............ A.4 Calibration Procedures ........... A.5 Glossary ..............A.7 Specifications ............A.9 Model Number Information ........A.10 Index ..............A.11 Declaration of Conformity........A.12 Quick Reference ........... A.13 Watlow Series 94 Table of Contents...
  • Page 4 Notes Watlow Series 94...

  • Page 5: Chapter 1: Overview

    Operator-friendly features include automatic LED indicators to aid in moni- toring and setup, as well as a calibration offset at the front panel. The Watlow Series 94 automatically stores all information in a non-volatile memory.
  • Page 6 Notes ■ 1. 2 Overview Watlow Series 94...

  • Page 7: Panel Cutout

    Installation Procedure Bold print denotes requirement for NEMA 4X seal. Follow this proce- dure to mount the Watlow Series 94 temperature control: 1. Make a panel cutout using the dimensions in Figure 1a. 2. If your controller model number begins with 94B, make sure the rounded side of the external case gasket is facing the panel sur- face.
  • Page 8 Then rock the collar back and forth until it can be easily pulled off the case. ■ 2. 2 Install and Wire Watlow Series 94...

  • Page 9: Wiring The Series 94

    Figure 2.3 – Power wiring. NOTE: Optional protective rear terminal WARNING: cover, 0822-0426-P001, is available. Irreversible damage Contact Watlow customer service or your will occur if high local Watlow sales representative. voltage is applied to the low voltage unit. ■...

  • Page 10: Sensor Installation Guidelines

    When extension wire is used for a 3-wire RTD, all wires must have the same electrical resistance (i.e. same gauge, same length, multi- stranded or solid, same metal). 2-wire RTD 3-wire RTD Jumper Terminals 3 and 5. ↑ DIP Switch orientation ■ 2. 4 Install and Wire Watlow Series 94...

  • Page 11: Output 1 Wiring

    94_ _- 1D D _ - 00_ _ of an R.C. suppressor. Form C, 5 Amp Watlow carries the Minimum load current: R.C. suppressor Quencharc brand 100 mA at 5VÎ (dc) name, which is a trademark of ITW N.O.
  • Page 12 R.C. suppres- Customer installed sor. Quencharc for inductive loads only. See note 1. Watlow carries the R.C. suppressor Quencharc Switched DC Figure 2.6b – brand name, which is a trademark of ITW 94_ _- 1D C _ - 00_ _ Paktron.
  • Page 13 R.C. suppres- 93BB-1CA0-00RR 2 S1 Temperature Controller sor. 3 S2, TC+ 4 Not used Watlow carries the R.C. 5 S3, TC- suppressor Quencharc 6 not used brand name, which is a 7 not used DIN-a-mite 8 N.C.1 trademark of ITW Paktron.
  • Page 14 Wiring Notes Sketch in your application on this page or a copy of it. See the wiring example in this chapter. power Figure 2.8 - Wiring notes. ■ 2. 8 Install and Wire Watlow Series 94...

  • Page 15: Chapter 3: How To Use The Keys And Displays

    Setup Menu. The [`LOC] Lock parameter appears. • Continue pressing both keys for three seconds to enter the Calibration Menu. Figure 3.1 - Series 94 Keys and Displays ■ Watlow Series 94 Keys and Displays 3. 1...
  • Page 16 Notes ■ 3 .2 Keys and Displays Watlow Series 94...

  • Page 17: Chapter 4: How To Set Up The Series

    Set the software selection for the input type to match. ↑ Figure 4.1a - DIP Switch Location and Orientation. Controller Chassis - Bottom View Thermocouple Figure 4.1b - Input DIP Switches. ↑ ↑ Input Types ■ Watlow Series 94 Setup...

  • Page 18: Entering Setup Menu

    [`bot] Bottom Display * These parameters may be masked or hidden, depending on the settings of your controller. For an explanation of when the parameters will appear, refer to Table 4.5b on page 4.5. ■ 4 .2 Setup Watlow Series 94...

  • Page 19: Setup Parameters

    Range High: Selects the high range of the limit set point. See the specifications information in the Appendix for your range values, or refer to Table 4.5a on page {``rH} 4.5. Range: Sensor range high to [``rL] Default: High range of sensor type ■ Watlow Series 94 Setup...
  • Page 20 Bottom Display (Lower): Selects what parameter appears on the lower display. Range: [``no] No display [`Pro] Process temperature [`LoL] Low limit set point [`HiL] High limit set point [`LoA] Low alarm set point [`HiA] High alarm set point Default: [`HiL] ■ 4 .4 Setup Watlow Series 94...

  • Page 21: Setup Menu Table

    [``no] = no display shown [`HiL] [`LOC] is set to [```0] [`Pro] = Process [`LoL] = Low limit set point [`HiL] = High limit set point [`LoA] = Alarm low set point [`HiA] = Alarm high set point ■ Watlow Series 94 Setup...

  • Page 22: Operation Parameters

    [`Ot2] is set to [`PrA] or [``Pr] and [`LOC] is set to [```0] or [```1] . [`LOC] is set to [```0] or -180°F to 180°F/-100°C to 100°C; [`CAL] [```1] . or -18.0°F to 18.0°F/-10.0°C to 10.0°C ■ 4 .6 Setup Watlow Series 94...

  • Page 23: Chapter 5: Alarms And Errors

    This silences the alarm until the process returns to the “safe” region. Once with- in this region, the alarm is ready again. Any future excursion outside of the alarm set points triggers an alarm. ■ Watlow Series 94 Alarms and Errors 5. 1...

  • Page 24: Error Code Messages

    • The above conditions occur regardless of the value of [`LOC], or the presence of the Setup or Calibration Menus. To clear a corrected error cycle power to the controller or press the RESET key. ■ 5 .2 Alarms and Errors Watlow Series 94...

  • Page 25: Appendix

    ◊ Maintain shield continuity at daisy chain connection points by recon- necting the broken shield. ◊ Assume no electrostatic shielding when using the shield as a signal return. If you must do this, use triaxial cable (electrostatically shielded coaxial cable). ■ Watlow Series 94 Appendix A. 1...

  • Page 26: Eliminating Noise

    • The ultimate protection is an “uninterruptable” power supply. This “sens- es” the ac power line; when the line fluctuates, a battery powered 60Hz inverted circuit takes over, supplying power within one-half to one cycle of the ac line; very expensive. ■ A .2 Appendix Watlow Series 94...

  • Page 27: Calibration

    After the final input is established, press the ‰Advance key twice to return the controller to the configuration menu at the top of the parameter list. NOTE: While in the Calibra- tion Menu, the con- troller outputs are disabled. ■ Watlow Series 94 Appendix A. 3...

  • Page 28: Restoring Factory Calibration

    Test display (Runs automatically) ç Before attempting to calibrate, make sure you have the proper equipment called for in each procedure. The Series 94 is calibrated and tested before it leaves the factory. ■ A .4 Appendix Watlow Series 94...
  • Page 29 Press the Reset Key twice to turn off Output 2 indicator light. The unit will leave the calibration mode if one minute passes between key activations. To conclude the RTD calibration, press the ‰Advance key to the next prompt or exit the Calibration Menu. ■ Watlow Series 94 Appendix A. 5...
  • Page 30 Notes ■ A .6 Appendix Watlow Series 94...

  • Page 31: Glossary

    A limit control can protect equipment and people when it is correctly installed with its own power supply, power lines, switch and sensor. ■ Watlow Series 94 Appendix...
  • Page 32 A symbol or message displayed by the con- troller that requests input from the user. ■ A .8 Appendix Watlow Series 94...

  • Page 33: Specifications

    Quencharc from ITW PAKTRON is recommended, • Electromechanical relay , Form C, 5A @ 120/240V~ maximum, Watlow part number 0804-0147-0000. without contact suppression, rated resistive load, 5A @ 30VÎ Operating environment is 0 to 60°C for line voltage exceeding 240V.
  • Page 34 Switching inductive loads (relay coils, etc.) requires using an RC suppressor. Quencharc from ITW PAKTRON is recommended, Watlow part number 0804-0147-0000. NOTE: User documentation may be available in French, German, Spanish, Italian and Dutch, as well as English. Check Watlow’s website (www.watlow.com/) for availability. Specify language at time of order. ■...

  • Page 35: Index

    1.1 overview of the Series 94 1.1 Glossary A.7-A.8 power wiring 2.3 High Limit Set Point 4.6 process alarm 5.1 high voltage wiring 2.3 Hysteresis - Alarm 4.4 Hysteresis - Limit 4.4 ■ Watlow Series 94 Appendix A.11...
  • Page 36 Erklärt, daß das folgende Produkt: Deutsch Beschreibung: Serie 94 Modellnummer(n): 9 4(A oder B) (B) -1 D (A, C, D oder K) (0 oder 1) WATLOW Winona Inc. -(4 beliebige Buchstaben oder Ziffern) Klassifikation: Sicherheitskomponente (Temperaturregelsystem), 1241 Bundy Boulevard Installationskategorie II, Emissionsgrad 2...
  • Page 37 The A/D overrange voltage is too high to convert an A/D signal. Make sure the [``In] Input parameter (Setup Menu) matches your sensor and DIP switches are set accordingly. ■ Watlow Series 94 Appendix A.13...
  • Page 38 * These parameters may be masked or hidden, depending on the settings of your controller. For an explanation of when the parameters will appear, refer to the Operation Menu table to the right. ■ A .1 4 Appendix Watlow Series 94...
  • Page 39 Watlow Winona is a division of Watlow Electric Manufacturing Company, St. Louis, Missouri, a manufacturer of industrial electric heating products, since 1922. Watlow begins with a full set of specifications and completes an industrial product that is manufactured totally in-house, in the U.S.A. Watlow products include electric heaters, sensors, controls and switching devices.
  • Page 40 • To discuss a custom option, ask for a Series 93 Product Manager. Warranty The Watlow Series 94 is warranted to be free of defects in material and work- manship for 36 months after delivery to the first purchaser for use, providing that the units have not been misapplied.

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