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Watlow Electric 93 - page 1
Series 93 1/16 DIN Microprocessor-Based Auto-tuning Control 0600-0001-0000 Rev C Made in the U.S.A. February 1999 $10 Supersedes 0600-0001-0000 Rev B User ’ s Manual W atlow Controls 1241 Bundy Blvd., P.O. Box 5580, Winona, Minnesota USA 55987-5580 Phone: (507) 454-5300, Fax: (507) 452-4507 http://www.watlow.com Registered Company Winona, Minneso ...
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Watlow Electric 93 - page 2
How to Use This Manual Watlow Series 93 Safety Information We use note, caution and warning symbols throughout this book to draw your attention to important operational and safety information. A bold text “NOTE” marks a short message in the margin to alert you to an important detail. A bold text “CAUTION” safety alert appears with informati ...
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Watlow Electric 93 - page 3
Watlow Series 93 Table of Contents ■ i Chapter 1: Overview ......................................................... 1.1 General Description ................................................ 1.1 Chapter 2: Install And Wire The Series 93 .................... 2.1 Panel Cutout ............................................................2.1 Dimensions ...
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Watlow Electric 93 - page 4
ii ■ Table of Contents Watlow Series 93 Meet the Series 93 T eam TO T AL 3 Y ear W arranty CUS T O M ER S A TISF A CTI O N We stand behind our product and are committed to your total satisfaction. Pictured below are some of the people at Watlow who have worked hard to bring you one of the finest industrial temperature controllers available today. ...
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Watlow Electric 93 - page 5
Watlow Series 93 Overview ■ 1.1 Over view General Description Welcome to the Watlow Series 93, a 1/16 DIN microprocessor-based tempera- ture controller. The 93 has a single input which accepts type J, K, T, N or S thermocouple, RTD or process input. With dual output, the primary output can be heating or cooling while the secondary output can be a ...
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Watlow Electric 93 - page 6
Over view 1.2 ■ Overview Watlow Series 93 Notes ...
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Watlow Electric 93 - page 7
Watlow Series 93 Install and Wire ■ 2.1 Install and Wire Figure 2 .1a - Series 93 Multiple Panel Cutout Dimensions. Installation procedure Bold print denotes requirement for IP65 (NEMA 4X) seal. Follow this procedure to mount the Watlow Series 93 temperature controller: 1. Make a panel cutout using the dimensions in Figure 2.1a. 2. If your contro ...
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Watlow Electric 93 - page 8
2.2 ■ Install and Wire Watlow Series 93 Install and Wire Figure 2 .2a - Mounting Case Side View. Figure 2 .2b - Mounting Collar Cross Section with offset teeth. Figure 2 .2c - Case Rear View and IP65 (NEMA 4X) Seal Example. 0 to 0.483 mm space (0 to 0.019 in.) Bezel Panel External Gasket Mounting Collar Ridges Teeth Tabs 4. Insert the controller ...
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Watlow Electric 93 - page 9
Wiring the Series 93 The Series 93 wiring is illustrated by model number option. Check the unit sticker on the controller and compare your model number to those shown here and also the model number break- down in the Appendix of this manual. All outputs are referenced to a de-energized state. The final wiring figure is a typical system example. Whe ...
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Watlow Electric 93 - page 10
Sensor Installation Guidelines We suggest you mount the sensor at a location in your process or system where it reads an average temperature. Put the sensor as near as possible to the mate- rial or space you want to control. Air flow past this sensor should be moderate. The sensor should be thermally insulated from the sensor mounting. See Chapter ...
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Watlow Electric 93 - page 11
Watlow Series 93 Install and Wire ■ 2.5 Figure 2.5a – 0-5V Î (dc) Process Input impedance: 10k Ω Figure 2.5b – 4-20mA Process Input impedance: 5 Ω Figure 2.5c – 4-20mA Process: 2-Wire T ransmitters Install and Wire NOTE: Successful installa- tion requires four steps: • Choose the con- troller’s hardware configuration and model numb ...
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Watlow Electric 93 - page 12
Output 1 Wiring Figure 2.6a – Mechanical Relay Without Contact Suppression 93_ _- 1 D _ _- 00 _ _ Form C, 5A Minimum load cur- rent: 100mA @ 5V Î (dc) Figure 2.6b – Solid-state Relay Without Contact Suppression 93_ _- 1 K _ _- 00 _ _ 0.5A (ac loads only) 8 10 L2 L1 Fuse External Load Customer-supplied Quencharc L1 L2 8 NC 9 COM 10 NO External ...
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Watlow Electric 93 - page 13
Watlow Series 93 Install and Wire ■ 2.7 Figure 2.7a – Switched DC 93_ _- 1 C _ _- 00 _ _ Figure 2.7b – 4-20mA Process 93_ _- 1 F_ _- 00 _ _ Maximum load impedance: 800 Ω External Load 10 9 - + External Load 10 9 - + Install and Wire NOTE: Successful installa- tion requires four steps: • Choose the con- troller’s hardware configuration a ...
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Watlow Electric 93 - page 14
Output 2 Wiring Figure 2.8a – Mechanical Relay Without Contact Suppression 93_ _- 1 _ D _ - 00_ _ Form C, 5A Minimum load current: 100mA @ 5V Î (dc) Figure 2.8b – Solid-state Relay Without Contact Suppression 93_ _- 1_ K _- 00_ _ 0.5A (ac loads only) Figure 2.8c – Switched DC 93_ _- 1_ C _ - 00_ _ 7 unregulated V+ V— 6 Internal Circuitry 7 ...
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Watlow Electric 93 - page 15
Watlow Series 93 Install and Wire ■ 2.9 Wiring Example Figure 2 . 9 - System Wiring Example. 5 - DIN-a-mite DA1C-1624-C000 1 Coil 9 (+) 10 (-) High Limit Mechanical Controller Heater 94BB-1DA0-00RR Limit Controller Limit Sensor Process Sensor 93BB-1CA0-00RR Rear View 5 (-) 3 (+) 11 12 Fuse Earth Ground L1 L2 120V Å (ac) 11 12 9 3 + 10 2 3 4 1 (- ...
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Watlow Electric 93 - page 16
Wiring Notes Sketch in your application on this page or a copy of it. See the wiring example in this chapter. Figure 2.10 - W iring Notes. Install and Wire 2.10 ■ Install and Wire Watlow Series 93 ∫ç WARNING: To avoid elec- tric shock and damage to property and equipment, use National Electric Code (NEC) safety prac- tices when wiring and conn ...
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Watlow Electric 93 - page 17
Watlow Series 93 Keys and Displays ■ 3.1 Keys and Displays Figure 3 .1 - Series 93 Keys and Displays. After 60 seconds with no key presses, the controller reverts to the default display — the process value in the upper display and the set point in the lower display. 3 How to Use the Key and Displays Lower Displa y: Indicates the set point, outp ...
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Watlow Electric 93 - page 18
3.2 ■ Keys and Displays Watlow Series 93 Keys and Displays Notes ...
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Watlow Electric 93 - page 19
Watlow Series 93 Setup ■ 4.1 Setup Figure 4 .1a - DIP Switch Location and Orientation. O N 1 2 O N 1 2 O N 1 2 Controller Chassis - Bottom View Thermocouple RTD Process Input Types Setting up the Series 93 is a simple process. First set the DIP switches to match your input type. Refer to the orientation below for the [``In] Input value. Next, con ...
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Watlow Electric 93 - page 20
4.2 ■ Setup Watlow Series 93 Setup [`LOC] Lock [``In] Input [`dEC] Decimal* [`C_F] Celsius - Fahrenheit* [``rL] Range Low [``rH] Range High [`Ot1] Output 1 [`HSC] Hysteresis Control [`Ot2] Output 2 [`HSA] Hysteresis Alarm* [`LAT] Latching* [`SIL] Silencing* [`rtd] RTD* [`rP`] Ramping [`rT`] Rate* [`P`L] Power Limiting* [`dSP] Display * Parameter ...
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Watlow Electric 93 - page 21
Setup Watlow Series 93 4.3 ■ Setup At the top of the Setup Menu the Series 93 displays the user level of operation in the upper display and the [`LOC] parameter in the lower display. Press the ‰ Advance key and the value of the next parameter appears in the upper display, and the parameter appears in the lower display. Lock: Selects the level o ...
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Watlow Electric 93 - page 22
4.4 ■ Setup Watlow Series 93 Setup Range High: Selects the high limit of the operating range. Also used to scale the high end of the process input. 5.0V Î (dc) and 20mA represent Range High [``rh] for a process input. The process input is linearly scaled between [``rL] and [``rH] . See the model number and specification information in the Append ...
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Watlow Electric 93 - page 23
Watlow Series 93 Setup ■ 4.5 Setup Parameter Value Range Factory Default Appears If: [ `LOC] 0 to 4 0 [``In] [```J] , [```H] , [```t] , [```n] , [```S] , [```J] DIP switch selectable. [`rtd] , [`r†d] , [`0-5] , [`420] [`dEC] 0, 0.0, 0.00 0 [``In] is set to [`0-5] or [`420] [`C_F] [```C] or [```F] Dependent on [`dFL] [``In] is set to [```J] , [` ...
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Watlow Electric 93 - page 24
4.6 ■ Setup Watlow Series 93 Setup NOTE: Shaded parameters may not appear, depending on the controller’s configu- ration and model number. Operation Parameters Set Point: Sets the operating set point for Output 1. Represents the process value the system tries to achieve for Output 1. "SP" does not appear on the lower display. The cont ...
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Watlow Electric 93 - page 25
Watlow Series 93 Setup ■ 4.7 Setup Operation Parameters Value Range Factory Default [`Pb1] If [`dFL] is set to [``US] : 0 to 555 ° C/0 to 999 ° F/0 to 999 Units 2.5 ° C 0 to 55.5 ° C/0 to 99.9 ° F/0 to 99.9 Units 25 ° F 0 is control. [`HSC] is set to switch differential If [`dFL] is set to [``SI] : 0.0 to 999.9% of span 3% [`rE1] 0.00 to 9. ...
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Watlow Electric 93 - page 26
4.8 ■ Setup Watlow Series 93 Setup Notes ...
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Watlow Electric 93 - page 27
Watlow Series 93 Tuning and Operating ■ 5.1 T uning and Operating Autotuning (Heat and/or Cool) The Series 93 can automatically tune the PID parameters to fit the characteristics of your particular thermal system. The autotuning procedure operates on a thermal response value — slow, medium, or fast. Use the slow thermal response when your proce ...
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Watlow Electric 93 - page 28
5.2 ■ Tuning and Operating Watlow Series 93 T uning and Operating 4 . When tuning is complete, the displays return to their previous state and [`AUt] reverts to 0. The Series 93 installs appropriate PID tuning parameters and saves them in the non-volatile memory. If a mechanical relay or contac- tor is switching power to the load, a longer cycle ...
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Watlow Electric 93 - page 29
Watlow Series 93 Tuning and Operating ■ 5.3 T uning and Operating Manual and Automatic Operation To change from auto to manual operation, press the ˆ Infinity key twice. Manual operation provides open loop control of the outputs from a range of -100% (full cooling) to 100% (full heating) power. The Series 93 allows a negative output value only w ...
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Watlow Electric 93 - page 30
5.4 ■ Tuning and Operating Watlow Series 93 T uning and Operating NOTE: When the alarm output is de-energized, the N.O. contact is open in the alarm condition. The N.C. contact is closed in the alarm condition. Press once - Clear a latched and corrected alarm. The Series 93 has two alarm types, process and deviation. A process alarm sets an absol ...
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Watlow Electric 93 - page 31
Watlow Series 93 Tuning and Operating ■ 5.5 T uning and Operating Four dashes [----] in the upper display indicate a Series 93 error. The error code is visible in the lower display. [`Er2] - Sensor underrange error (applies only to RTD units) The sensor input generated a value lower than the allowable signal range, or the analog-to-digital circui ...
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Watlow Electric 93 - page 32
5.6 ■ Tuning and Operating Watlow Series 93 T uning and Operating • [`Er2] , [`Er6] , [`Er7] result in these conditions: • If [`LOC] Lock is set to 0, 1 or 2: …and the controller was in automatic operation when the error occurred, it goes into manual (% power) operation. If the output power is less than 75% power, and a <5% change in pow ...
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Watlow Electric 93 - page 33
Watlow Series 93 Appendix ■ A.1 Appendix Noise and Installation Guidelines For wiring guidelines, refer to the IEEE Standard No. 518-1982, available from IEEE, Inc. 345 East 47th Street, New York, NY 10017. Noise Sources • Switches and relay contacts operating inductive loads such as motors, coils, solenoids, and relays, etc. • Thyristors or ...
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Watlow Electric 93 - page 34
A.2 ■ Appendix Watlow Series 93 Appendix • Use twisted pair wire any time controller circuit signals must travel more than two feet, or when you bundle them in parallel with other wires. • Select the size or gauge of wire by calculating the maximum circuit current and choosing the gauge meeting that requirement. Using greatly larger wire size ...
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Watlow Electric 93 - page 35
Watlow Series 93 Appendix ■ A.3 Appendix Figure A.3 - Entering the Calibration Menu. NOTE: While in the Calibra- tion Menu, the con- troller output(s) go off and the alarm output (if present) is on. NOTE: Calibration values will not be retained unless you are in the MANUAL mode. Do not enter the MAN- UAL mode until you are at the correct input pa ...
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Watlow Electric 93 - page 36
A.4 ■ Appendix Watlow Series 93 Appendix Figure A.4 - Calibration Parameters. ç Before attempting to calibrate, make sure you have the proper equipment called for in each procedure. The Series 93 is calibrated and tested before leaving the factory . Restoring Factor y Calibration The [`rSt] parameter restores the factory calibration values to th ...
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Watlow Electric 93 - page 37
Watlow Series 93 Appendix ■ A.5 Appendix Appendix NOTE: Before calibrating an installed controller, make sure all data and parameters are documented. See the Setup and Operation Tables in Chapter Four. NOTE: When the % indica- tor light is on, the controller is auto- matically calibrating. Your sequence is VERY important. Always move to the next ...
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Watlow Electric 93 - page 38
A.6 ■ Appendix Watlow Series 93 Appendix Equipment Required • Precision dc voltage source 0-5 volt minimum range with 0.001 volt resolution. Setup and Calibration 1. Connect the ac line voltage L1 and L2 to the proper terminals on the Series 93. 2. Connect the voltage/current source to Terminal 3 (+) and 5 (-) on the Series 93 terminal strip. U ...
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Watlow Electric 93 - page 39
Watlow Series 93 Appendix ■ A.7 Appendix Appendix Equipment Required: • 300 Ω , 1/2 watt 10% resistor. • 4 - 1/2 digit Digital Multimeter. Setup And Calibration 1. Connect the ac line voltage L1 and L2 to the proper terminals of the Series 93. See Chapter Two. Set the multimeter to measure current. 2. Connect the multimeter in series with t ...
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Watlow Electric 93 - page 40
A.8 ■ Appendix Watlow Series 93 Appendix Notes ...
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Watlow Electric 93 - page 41
Watlow Series 93 Appendix ■ A.9 Glossar y A alarm A signal that indicates that the process has exceeded or fallen below the set or limit point. For example, an alarm may indicate that a process is too hot or too cold. alarm, deviation Warns that a process has exceeded or fallen below a certain range around the set point. Alarms can be referenced ...
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Watlow Electric 93 - page 42
A.10 ■ Appendix Watlow Series 93 F - G Form A A single-pole, single-throw relay that uses only the normally open (NO) and common contacts. These contacts close when the relay coil is energized. They open when power is removed from the coil. Form C A single-pole, double-throw relay that uses the normally open (NO), normally closed (NC) and common ...
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Watlow Electric 93 - page 43
Watlow Series 93 Appendix ■ A.11 PID Proportional, integral, derivative. A control mode with three functions: proportional action dampens the system response, integral corrects for droop, and deriva- tive prevents overshoot and undershoot. process variable The parameter that is controlled or measured. Typical examples are temperature, relative hu ...
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Watlow Electric 93 - page 44
A.12 ■ Appendix Watlow Series 93 Appendix Specifications (1639) Control Mode • Microprocessor-based, user-selectable control modes • Single input, dual output • 2.5Hz Input Sampling Rate • 1Hz Display Update Rate • Ramp to set point: 0 to 9999 degrees or units per hour • Heat and cool autotune Operator Interface • Sealed membrane fr ...
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Watlow Electric 93 - page 45
Ordering Information (1068) 93 _ _ - 1 _ _ _ - 0 0_ _ Part Number Microprocessor-based 1/16 DIN, Single Input, Dual Output, Two-, Four-Digit Displays IP65/NEMA 4X 2 Option A = Without IP65/NEMA 4X Rating B = With IP65/NEMA 4X Rating CE Option A = Without CE B = With CE Output 1 C = Switched dc output, non-isolated D = Electromechanical relay, Form ...
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Watlow Electric 93 - page 46
A.14 ■ Appendix Watlow Series 93 Appendix A ‰ Advance key 3.1 Alarm High 4.7 Alarm Low 4.7 alarm silencing 5.5 alarms 5.4 automatic operation 5.3 autotuning 5.1 Autotune 4.7 B - C calibration A.3 Calibration Menu A.4 Calibration Offset 4.7 Celsius-Fahrenheit 4.3 clearing an alarm 5.4 Cycle Time 4.6 D default parameters Operation 4.6-4.7 Setup 4 ...
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Watlow Electric 93 - page 47
Watlow Series 93 Appendix ■ A.15 Appendix Declara que el producto siguiente: Español Designaci ó n: Serie 93 N ú meros de modelo: 9 3 (A o B) (A o B) - 1 ( C D F o K ) (A C D o K) ( 0 ó 1) - (Cualquier combinaci ó n de cuatro n ú meros y letras) Clasificaci ó n: Control, categor í a de instalaci ó n II, grado de contaminaci ó n ambienta ...
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Watlow Electric 93 - page 48
A.16 ■ Appendix Watlow Series 93 Notes Appendix ...
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Watlow Electric 93 - page 49
Errors Four dashes [----] in the upper display indicate a Series 93 error. The error code is visible in the lower display. [`Er2] - Sensor underrange error (applies only to RTD units) The sensor input generated a value lower than the allowable signal range, or the ana- log-to-digital circuitry malfunctioned. Enter a valid input. Make sure the [``In ...
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Watlow Electric 93 - page 50
A.18 ■ Appendix Watlow Series 93 Appendix Parameter Value Range Factory Default Appears If: [`LOC] 0 - 4 0 [``In] [```J] , [```H] , [```t] , [```n] , [```J] DIP switch-selectable. [```S][`rtd] , [`r†d] , [`0-5] , [`420] [`dEC] 0, 0.0, 0.00 0 [``In] is set to [`0-5] or [`420] [`C_F] [```C] or [```F] Dependent on [`dFL] [``In] is set to [```J] , ...
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Watlow Electric 93 - page 51
W atlow Controls Watlow Controls is a division of Watlow Electric Mfg. Co., 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 manu- factured totally in-house, in the U.S.A. Watlow products include electric heaters, sens ...
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Watlow Electric 93 - page 52
Watlow Series 93 User’s Manual Watlow Controls, 1241 Bundy Blvd., P.O. Box 5580, Winona, MN 55987-5580, Phone: 507/454-5300, Fax: 507/452-4507 How to Reach Us Quality and Mission Statement: Watlow Controls will be the world’s best supplier of industrial temperature control products, services, and systems by exceeding our customers’, employees ...
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