SI 1990 PyroMATION, ® INC. INSTRUCTION MANUAL Series 423 Digital Indicator Copyright © 1993, Pyromation, Inc.
TABLE OF CONTENTS PAGE NO. 1-1 Notes ..................................................................................................................... 1 2-1 General Information.......................................................................................... 2 2-2 Limited Warranty............................................................................................... 2 3-1 Specifications..............................................................................................
2-1 GENERAL INFORMATION The 423 Series Instruments are a Microprocessor-Based Digital Process Indicator for thermocouples and RTD's. The instrument has no potentiometers for calibration. All calibration is done from the front panel and stored in non-volatile memory. The program menu has been secured at the factory by the use of a password which prevents unauthorized users from entering the calibration mode. Thermocouple and RTD inputs can be changed through the pushbuttons as well.
3-1 SPECIFICATIONS Power Supply: DC Isolation: Ambient Temperature: - STANDARD 120 or 240VAC +10%/-15% 50/60HZ External Fuse Required - .5A @ 500 VP 32 to 122°F (0 - 50°C) Overall Accuracy: RTD or Thermocouple: + 1°F 4 - 20 mA: + .1% Input Impedance: 47M Ohm (Millivolt inputs only) RTD Excitation Current: Error Due to Lead Resistance: Conversion Rate: Filtering: Resolution: Display: Display Readouts: Physical Dimensions: .25mA 0.1uV per Ohm (T/C Inputs Only) 2.
4-1 ORDER CODE Example Order Number: 423 - 1 1 - 42 R1 - 04 - S (0-5000) Table 1 Table 6 METER STYLE ORDER CODE 1 DESCRIPTION Input Selectable for T/C or RTD's with Fixed Range or 4 - 20 mADC with Scaleable Display Table 2 ORDER CODE 1 2 3 4 S * DESCRIPTION Factory Scaled 4-20 mA Inputs Only * Insert actual scaling desired as per examples below 0 - 5000, 50 - 150, -100 to 100, 500-0 Table 5 POWER SUPPLY DESCRIPTION 120 VAC 240 VAC 24 VDC 12 VDC (Field Selectable) (Field Selectable) (Fact
5-1 UNPACKING Unpack the instrument immediately upon receipt, and visually inspect for shipping damages. If the instrument was damaged in transit, note any damage and file a claim with the carrier. 5-2 LOCATION Install the instrument in an area where it will not be subjected to excessive shock, vibration, dirt, oil, and where the temperature will not exceed 0-50°C (32-122°F). The instrument should not be installed in an area where rapid temperature changes may occur (e.g.
6-1 LINE SUPPLY WIRING Figure 5 Figure 6 120 or 240 VAC Line Supply 12 or 24 VDC Line Supply 1 GND 2 + .5A FUSE 6-2 DC SUPPLY AC LINE SUPPLY CONVERSION The 423 Series meter can be field changed from 120 to 240 VAC or back. This is accomplished by changing the jumper on the PC board. The jumpers are located in the rear next to the transformer. See figures below. (This change will not void the limited warranty).
7-1 THERMOCOUPLE INPUT WIRING Figure 12 GND T/C - T/C 5 + 6 Note: Thermocouple input extension wire should not be run in the same conduit as line voltage, nor should they be exposed to excessive electrical noise. Always use compensated leadwire when wiring for thermocouple inputs.
8-1 12-POSITION SELECTOR SWITCH WIRING ILLUSTRATIONS Figure 17 Figure 18 RTD Selector Switch Connections COPPER WIRE 5 6 Thermocouple Selector Switch Connections 5 7 T/C WIRE SWITCH OUTPUT - 6 + SWITCH OUTPUT SWITCH BOX SWITCH BOX T/C (RED) T/C + RTD 8-2 Figure 19 .250" 1.06" 5.58" Note: Always use compensated leadwire when wiring for thermocouple inputs. 8-3 UNIT REPAIRS If returning instrument, contact the factory or local representative for a Return Authorization Number.
9-1 TROUBLE SHOOTING PROBLEM POSSIBLE CAUSES ' OPEN ' l l ' OVER ' l l ' UNDR ' l l l Erratic Readings l l l Sensor not connected Damaged sensor Sensor is over temperature range Incorrect sensor Sensor is under temperature range Incorrect sensor Wrong polarity on connection Loose connection on sensor input Damaged sensor AC noise on sensor connections POSSIBLE WIRING ERRORS Destructive Errors l Do not connect power to the sensor input. This could destroy the panel meter.
10-1 MAIN MENU Below is a block diagram showing the basic menu program. Specific menu breakdowns are described on the following pages. The middle button is used as the enter key. This will move you through the program. The buttons allow you to view and change variables to the program. Please note, to eliminate changes made, simply disconnect power before you come to the PWRD YES/NO prompt.
11-1 RELAY MENU Figure 21 RLY 1 or YES/NO IF YES or LOW/HIGH or LOW/HIGH IF NO RLY 2 or YES/NO IF YES IF NO SP 1 or 150 RETURN WHEN AT DESIRED SETPOINT or 150 RETURN WHEN AT DESIRED SETPOINT or 001 RETURN WHEN AT DESIRED HYSTERISIS or 001 RETURN WHEN AT DESIRED HYSTERISIS SP 2 HYS 1 HYS 2 CAL . . . Note 1: Recommend using MOVs on Relay Terminals.
12-1 4 - 20 mA MENU Figure 22 SNSR MAMP DP or TO CHANGE DECIMAL or TO CHANGE F/C/OFF UNIT ZERO k CONNECT 4mA SOURCE or 000 RETURN WHEN AT DESIRED READING WAIT SPAN k CONNECT 20mA SOURCE or 000 RETURN WHEN AT DESIRED READING or 000 RETURN WHEN AT DESIRED UNDER INDICATION or 000 RETURN WHEN AT DESIRED OVER INDICATION WAIT UNDR OVER RLY 1 . . .
13-1 4 - 20mA CALIBRATION PROCEDURES (All steps must be completed) = UP = ENTER = DOWN {Step 1} Power panel meter for at least 30 minutes. {Step 2} Enter menu program, go to the SNSR menu. Press the ENTER button. MAMP should appear on the display. If not, press the down button until MAMP is displayed. Press the ENTER button. {Step 3} Select proper resolution for the decimal point by pressing the down button. When proper resolution has been selected press the ENTER button.
14-1 PASSWORD MENU Described below is the menu for selecting menu passwords. Figure 23 PWRD NEW PWRD or YES / NO ENTR 028 PWRD RETURN WHEN AT DESIRED PASSWORD IF YES WAIT . TO PICK NEW VALUE V3.1 . READING 14-2 CALIBRATION MENU The calibration routine is for thermocouples and RTD's only. Described below is the menu program for calibration. Each calibration can be independently done using the down arrow to scroll to the next routine.
15-1 THERMOCOUPLE CALIBRATION PROCEDURE = UP = ENTER = DOWN {Step 1} Power panel meter for at least 30 minutes. {Step 2} Enter menu program, go to the CAL mode. Press the down button and hold for approximately 1.5 seconds until the meter reads SHRT, then release the button. Failure to hold the button for 1.5 seconds will terminate the calibration process. {Step 3} Install jumpers between terminals 5, 6, and 7 using copper wire. Press and release the enter button. Wait until 50mV appears.
16-1 RTD CALIBRATION PROCEDURES = UP = ENTER = DOWN {Step 1} Power panel meter for at least 30 minutes. {Step 2} Enter menu program, go to the CAL mode. Press the down button and hold for approximately 1.5 seconds until the meter reads SHRT, then release the button. Failure to hold the button for 1.5 seconds will terminate the calibration process. {Step 3} Install jumpers between terminals 5, 6, and 7 using copper wire. Press and release the enter button. appears. Disconnect jumpers.
17-1 CJC CALIBRATION PROCEDURES = UP = ENTER = DOWN {Step 1} Power panel meter for at least 30 minutes. {Step 2} Enter menu program, go to the CAL mode. Press the down button and hold for approximately 1.5 seconds until the meter reads SHRT, then release the button. Failure to hold the button for 1.5 seconds will terminate the calibration process. {Step 3} Press the down button until CJC appears.
