Bulletin 949-1311 INSTRUCTIONS FOR THE 32A SERIES 1/32 DIN MICROPROCESSOR BASED TEMPERATURE / PROCESS CONTROL LOVE CONTROLS DIVISION DWYER INSTRUMENTS, INC. P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Phone: 219/879-8000 www.love-controls.com Fax: 219/872-9057 e-mail: love@love-controls.
CONTENTS INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Wiring for Optional Inputs and Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Wiring for 4 to 20mA Transmitter inputs . . . . . . . . . . . . . . . . . . . .
GETTING STARTED 1. Install the control as described on page 4. 2. Wire your control following the instructions on page 5. If you are using a two-wire transmitter as an input, see the drawing and instructions on page 7. Option wiring instructions are on page 6. Option descriptions are on page 4, and specific instructions start on page 15. 3. Most controls do not need many (if any) program changes to work on your process.
MODEL IDENTIFICATION Model 3 2 A Options Alarm Programming 0 = No 1 = Yes Output 1 1 = SSR 5 = Current 2 = 5 VDC 8 = DC SSR 3 = Relay Output 2 0 = None 3 = Relay 1 = SSR 8 = DC SSR 2 = 5 VDC Options: 992 9502 Note: RS-485 Serial Communications. Allows remote computer to read and write all control parameters. 12 - 24 VDC/VAC 50-400Hz power supply (control operates on low voltage equipment). Only Option 9502 may be combined with another option. No other options may be combined.
Prepare the panel by cutting and deburring the required opening(s). From the front of the panel, slide the housing through the cutout. The housing gasket should be flat against the housing flange before installing. From the rear of the panel slide the mounting collar over the housing. Hold the housing with one hand and using the other hand, push the collar evenly against the panel until the spring loops are slightly compressed. The ratchets will hold the mounting collar and housing in place.
Control wiring is as shown. The wiring terminals for the 32A are compression type. To open the wiring terminal, turn the screw for that terminal counterclockwise. Slide the wire into the terminal space. While holding the wire in place, turn the screw clockwise to tighten. Maximum torque is 0.424 N•m (3.75 in lb). Do not overtighten. The wire should be held snugly in place. Wiring for Optional Inputs and Outputs Wire power and outputs as shown on page 5 and 6. Wiring for options is shown below.
Wiring for 4 to 20mA Transmitter Inputs Wire power and outputs as shown above. Two-wire transmitters wire as shown below. For three or four wire transmitters, follow the wiring instructions provided with your transmitter. DO NOT WIRE THE 24 VOLT POWER SUPPLY ACROSS THE INPUT OF THE CONTROL. DAMAGE TO THE CONTROL INPUT CIRCUITRY WILL RESULT.
FRONT PANEL KEY FUNCTIONS The decimal point flashes when Self-Tune is operating. Keys are illuminated when pressed. Key functions are as follows: INDEX: Pressing the INDEX key advances the display to the next menu item. May also be used in conjunction with other keys as noted below. UP ARROW: Increments a value, changes a menu item, or selects the item to ON. The maximum value obtainable is 9999 regardless of decimal point placement.
While in the Primary or Secondary Menu, if no key is pressed for a period of 30 seconds, the display will return to the HOME position displaying the temperature value. While in the Secure Menu, if no key is pressed for a period of 60 seconds, the display will return to the HOME position displaying the temperature value. Outputs are disabled (turned off) when the Secure Menu is active.
NOTATION CONVENTIONS FOR THE MENUS Because of the number of features available in this control, information is included that may not apply to your specific control. All usable features are included in this book, but may not be used in your process. To increase clarity the following conventions are used: 1. Certain features, Menu Items, and functions shown in this book may or may not appear on your control, depending on other Menu Item selections.
PROGRAMMING AND OPERATION FOR RAMP / SOAK FEATURE The ramp / soak feature offers a great deal of flexibility by allowing changes in the set point to be made over a predetermined period of time. Soak (dwell) times can be programmed, and the alarm output relay can be programmed to open or close during any of the segments. Theory of Operation The 32A Series controls offer a very simple approach to programming a ramp.
Program Setup All of the programming for the Ramp / Soak function is done in the Secondary Menu. You may wish to work out your program on paper before going into the programmer menu sequence. In the Secondary Menu INDEX to Prog and make sure that Prog is set to OFF. INDEX to PSEt and turn On. Skip the StAt setting (this is discussed later) and press INDEX to 1ti. The following items repeat in the following order: 1ti, 1SP, 1AL (if alarm is programmed as an event), 2ti, 2SP, 2AL, . . . , 16ti, 16SP, 16AL.
Ramp / Soak Operation When you wish to start the program, enter the Secondary Menu and set the Prog menu item to On. Return to the HOME position by waiting for the display to time out or by pressing the UP ARROW / ENTER keys and then the DOWN ARROW / INDEX keys. The home display will read as it normally does. The HOLD indicator over the RUN / HOLD key will be lit. To start the program press INDEX to display Prog. Press the UP ARROW key to select run and press ENTER.
AUTO / MANUAL OPERATION The AUTO / MANUAL function allows you to manually adjust the output of the control. This is normally used during process setup or start up. It can also be used for troubleshooting. To switch from AUTO to MANUAL press INDEX to Auto. Press the UP ARROW to select OFF and press ENTER.The MANual indicator will light and the lower display will change from normal to showing the actual output in percent.
OPERATION AND PROGRAMMING OF OPTIONS Option 992, Serial Communication. The serial communications option allows the control to be written to and read from a remote computer or other similar digital device. Communication is allowed through a RS-485 (Option 992) port. Wire the communication lines as shown on Page 6. Wiring for the RS-485 is run from control to control in a daisy chain fashion with a termination resistor (120 ohms) across the transmit and receive terminals of the last control in the chain.
FACTORY DEFAULT PROCEDURE If for any reason you wish to restore the factory settings or change the function of the second output between ALarm or Control follow the following procedure. 1. 2. 3. 4. 5. 6. 7. 8. 9. Turn off power to control Turn on power to control While control is performing SELF tESt, press and hold the INDEX and ENTER keys. The control will display the ROM ID code. Press INDEX. The control will display FACt dFLt.
ALARM TYPE AND ACTION Caution: In any critical application where failure could cause expensive product loss or endanger personal safety, a redundant limit controller is required. The 32A Series allows Set Point 1 (and Set Point 2 is equipped) to operate as limit or alarm type outputs. This function is available on all outputs except the proportional current (output type 5). To enable a set point output to act as an alarm or limit, Out1 (for SP1) or Out2 (for SP2, if equipped) should be set for OnOf.
Serial Communications Options and Non-volatile Memory There are many different types of memory used in computer driven devices. The terms RAM (random access memory) and ROM (read only memory) are a couple with which you may be familiar. RAM is used in computers to run programs and hold data for a short period of time. This is the memory that is used primarily in PCs. RAM is very fast and can be read and written to over and over again.
If your computer system will be making frequent changes to the control we strongly recommend that you select the ‘write to RAM’ parameters (Stor = no). If you are primarily reading from the control, there is no need to change the setting. Any instruments equipped with any Serial Communications are limited to one million WRITE cycles to the EEPROM through the Serial Communications Port. Exceeding this limit will generate a FAIL TEST error.
SECONDARY MENU Hold UP ARROW & ENTER. Press INDEX to advance to the next menu item. Press UP ARROW or DOWN ARROW to change the value in the display. Press ENTER to retain the value. If the control is not equipped with alarm, or if the alarm functions (AL) are turned OFF or programmed as event (Eunt), ALLO and ALHi will not appear. ALLo Alarm Low: The Low Alarm point is usually set below the Set Point. May not appear depending on AL setting in Secure Menu.
##tP Time Proportioning Cycle Time. Select 1tP to 80tP. 1tP A setting of 1tP is recommended for solid state outputs (SSR or 15VDC). 2tP to 80tP Time Proportioning Control is adjustable in 1 second steps. Recommended for mechanical outputs (relays, solenoids, etc.). For best contact life, a time should be selected as long as possible without causing the process to wander. #PuL Pulsed Time Proportioning Output: Select 1PuL to 7PuL. 1PuL = Linear and 7PuL = most nonlinear.
tunE Tuning Choice: Select SELF, Pid, SLO, nor, or FASt. SELF The Controller will evaluate the Process and select the PID values to maintain good control. Active for SP1 only. LErn Pid Select YES or no YES Start Learning the Process. After the process has been learned the menu item will revert to no. no Learning will stay in present mode. dFAC Damping factor, Select OFF, 1 to 7. Sets the ratio of Rate to Reset for the SELF tunE mode. 7 = most Rate. Factory set to 3.
FrtE Fuzzy Logic Rate of Change: Select 0.00 to 99.99 counts/second. For best initial setting, find the count/second change of process value near set point 1 with output ON 100%. Multiply this value by 3. Set FrtE to this calculated value. Will not appear if Fint is OFF. PEA The Peak feature stores the highest input the control has measured since the last reset or Power On. At Power On PEA is reset to the present input. To manually reset the value PEA must be in the lower display.
The following items repeat in the following order: 1ti, 1SP, 1A1 (if alarm 1 is programmed as an event), 2ti, 2SP, 2A1, . . . , 16ti, 16SP,16A1. To avoid repetition each item will only be described once. 1ti Segment Time: Select 0 to 9999 units (minutes if tbaS is set to 60_S, seconds if tbaS is set to 1_S. 1SP Segment Set Point: Select 0 to 9999 units (minutes if tbaS is set to 60_S, seconds if tbaS is set to 1_S. 1AL Segment Alarm Event: Select On or OFF .
SECURE MENU Hold UP ARROW & ENTER for 5 Seconds. Press INDEX to advance to the next menu item. Press UP ARROW or DOWN ARROW to change the value in the display. Press ENTER to retain the value. OUTPUTS ARE DISABLED (TURNED OFF) WHILE CONTROL IS IN SECURE MENU. SECr Security Code: See the Security Level Selection and the Password Table in this manual, in order to enter the correct password. InP Input Type: Select the proper wiring.
OSUP Zero Suppression: Select On or OFF. Only with Current and Voltage input types. OFF The input range will start at 0 (zero) Input. On The input range will start at 4.00 mA or 1.00 V. Unit F, C or None. F °F descriptor is On and temperature inputs will be displayed in actual degrees Fahrenheit. C °C descriptor is On and temperature inputs will be displayed in actual degrees Celsius. nonE °F and °C descriptors will be Off. This is only available with Current and Voltage Inputs.
SEnC Sensor Rate of Change: Select OFF, 1 to 4000 °F, °C, or counts per 1 second period. This value is usually set to be slightly greater than the fastest process response expected during a 1 second period, but measured for at least 2 seconds. If the process is faster than this setting, the SEnC bAd error message will appear. The outputs will then be turned off. This function can be used to detect a runaway condition, or speed up detection of an open thermocouple. Use the INDEX & ENTER keys to reset.
If Out1 is set for ##tP, #PUL, or ProP, then S1OL and S1OH (following) appear. If Out1 is set for ONOF, then skip to S1rE. S1OL Set Point Output Low Limit: Select 0 to 100% but not greater than S1OH. This item limits the lowest output value. This is useful for adding a bias to the process when needed. Factory set to 0 for output codes 1,2, and 3. Factory set to 20 for output code 5 (20% output equals 4 mA output).
If your control is not equipped with a second output or if the second output is programmed as an alarm, then proceed to the alarm section (next page). S2t Set Point 2 type: Select Abs or dE. AbS Absolute SP2. SP2 is independent of SP1, and may be set anywhere between the limits of SPL and SPH. dE Deviation SP2. SP2 is set as a deviation from SP1, and allows SP2 to retain its relationship with SP1 when SP1 is changed (tracking SP2). S2St Set Point 2 State: Select dir or rE. dir Direct Action.
The following menu item applies only to the alarm when programmed. AL Alarm function: Select OFF, Lo, Hi, HiLo, or Evnt. OFF Alarm is disabled. No Alarm menu items appear in the Secondary or Secure menus. Lo Low Alarm Only. ALLo appears in the Secondary Menu. Hi High Alarm Only. ALHi appears in the Secondary Menu. HiLo High and Low Alarms. Both ALLo and ALHi appear in the Secondary Menu, and share the same Alarm Relay output. Evnt Alarm is controlled by the Ramp/Soak program function.
Addr (Option 992, Serial Communications) Control Address: Set from 1 to 3FF. This number (hexadecimal, base 16) must match the address number used by the host computer. bAUd (Option 992, Serial Communications) Communication Baud Rate: Select 300, 1200, 2400, 4800, 9600, or 19200. This number must match the baud rate used by the host computer. nAt (Option 992, Serial Communications) No Activity Timer: Set from OFF or 1 to 99 minutes. 1 - 99 Maximum time between host computer accesses.
SPECIFICATIONS Selectable Inputs: Thermocouple, RTD, DC Voltage, or DC Current selectable. Input Impedance: Thermocouple = 3 megohms minimum. RTD current = 200µA. Current = 10 ohms. Voltage = 5000 ohms. Sensor Break Protection: De-energizes control output to protect system after customer set time. (See InPt in Secondary Menu.) Set Point Range: Selectable (See Range Chart Page 35). Display: Two 4 digit, 7 segment 6.35 mm (0.25˝) high LEDs.
DIAGNOSTIC ERROR MESSAGES DISPLAY UFL or OFL MEANING Underflow or Overflow: Process value has exceeded input range ends UFL or OFL will sequence to display one of these messages if the InPt is set for a time value. SP OUTPUTS Set point outputs active Alarm active. ACTION REQUIRED Input signals may normally go above or below range ends. If not, check input and correct. Set point outputs inactive Alarm active. To reset use the INDEX and ENTER keys.
DIAGNOSTIC ERROR MESSAGES DISPLAY MEANING No Display is blank. Instdisplay lighted rument is not getting power, or the supply voltage is too low. FAIL tESt Fail test appears upon power up if the internal diagnostics detect a failure. This message may occur during operation if a failure is detected. Displays flash. SP OUTPUTS Set point outputs inactive Alarm inactive. ACTION REQUIRED Check that the power supply is on, or that the external fuses are good. Set point outputs inactive Alarm inactive.
Input Ranges (Field Selectable) Thermocouple Types Input Type Range 1° F 1°C Input Type Range 1° F 1°C Input Type Range 1° F 1°C Type J or L* Type K* Type T* Iron-Constantan Chromel-Alumel Copper-Constantan Type E* Chromel-Constantan -100 to +1600 -73 to +871 Type R PT 13%-PT -200 to +2500 -129 to +1371 Type S PT 10%-PT -350 to +750 -212 to +398 Type B PT 6% RE-PT 30% RE -100 to +1800 -73 to +982 Type C W 5% RE-W 26% RE 0 to 3200 -17 to +1760 Type N* Ni Chr Si-Ni Si 0 to 3200 -17 to +1760 +75 to 33
DIMENSIONS 44.86 (1.786) 111.6 (4.395) 11 (0.433) 22.1 (0.870) 52.8 (2.080) 30.1 (1.184) 6.35 (0.25) Maximum Panel Thickness ALL DIMs IN MM (INCHES) PANEL CUT-OUT: 45 + 0.6 x 22.2 + 0.3 (1.772 + 0.02 x 0.874 + 0.012) ©Copyright 2011 Dwyer Instruments, Inc LOVE CONTROLS DIVISION DWYER INSTRUMENTS, INC. P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Printed in U.S.A. 7/11 FR# 949-1311 Rev. 3 Phone: 219/879-8000 www.love-controls.com Fax: 219/872-9057 e-mail: love@love-controls.
