Teledyne 2002 mA Interface Option Board, 8.1 4-20 mA Interference Connector Pin Assignmets

SECTION 8

4-20 mA Interface Option Board

The Relay option board in the Model 2002 operates off of the setpoints defined by the user and programed into the Model 2002 microprocessor. For more information about configuring these setpoints refer to Section 3 of this manual.

The 4-20 mA interface board is available as an option for the Model 2002. This board provides dual current channels linearly proportional to the HPM 2002’s pressure reading. Please note that use of the Model 2002 with this option requires a CPU with firmware for version 1.6 or later.

LOW SETPOINT OPTION BOARD HIGH SETPOINT

RELAY	CONNECTOR (MALE)		RELAY
TRANSDUCER CONN.		STANDARD
(FEMALE)		I/O CONNECTOR

Model 2002

Rear Panel Detail

Figure 8.1

8.14-20 mA Interference Connector Pin Assignmets

Pin	Connection
1	Internal loop power out (+) channel 1.
3	Loop in (-) channel 1.
8	Internal loop power out (+) channel 2.
7	Loop in (-) channel 2.

The 4-20 mA board can only be operated with internal loop power.

A schematic (Figure 8.2) is attached to show the proper method to wire into a loop.

Symptom: Fixed display, regardless of pressure

Action: 1. Check sensor for contamination.

Model 2002 page 37