GE IS200EXICH1A excitation controller module

Description

GE General Electric Technical Specifications: IS200EXICH1A

Input protection for the module is sufficient to guarantee operation with reduced performance

with up to 200V common-mode. The module provides electrical isolation of externally

generated noise between field wiring and the backplane IS200EXICH1A through the use of optical isolation.

To minimize the capacitive loading and noise, all field connections to the module should be

wired using a good grade of twisted, shielded instrumentation cable. The shields can be

connected to either COM or GND. The COM connection provides access to the common of the

analog circuitry in the module. The GND connection provides access to the baseplate (frame

ground).

An LED at the top of the faceplate is ON when the IS200EXICH1A module’s power supply is operating. The main

power source for the module is the isolated +24 VDC power supplied by the PLC power supply.

This voltage is routed through an inverter/regulator to provide the operating voltage for the module.

This module also consumes power from the +5 VDC output of the PLC power supply to drive the

isolation circuitry. This module can be installed in any I/O slot of a 5 or 10-slot baseplate in a

Series 90-30 PLC system. See page 3-11 to determine the number of Analog Current Input

modules that can be installed in a system.

The 16-Channel Analog Voltage Input module provides up to 16 single-ended or eight differential

input channels, each capable of converting an analog input signal to a digital value for use as

required by your application. This module provides two input ranges:

0 to 10 V (unipolar)

–10 to +10 V (bipolar)

IS200EXICH1A Voltage Ranges and Input Modes

The default input mode and range is single-ended, unipolar, with the user data scaled so that 0 volts

corresponds to a count of 0 and 10 volts corresponds to a count of +32000. The other range and

mode are selected by changing the configuration parameters using the Logicmaster 90-30/20/Micro

or CIMPLICITY Control configurator software, or the Hand-Held Programmer. The range can be

configured for bipolar –10 to +10 V where –10 V corresponds to a count of –32000, 0 V

corresponds to a count of 0, and +10 V corresponds to a count of +32000.

High and Low alarm limits are available on all ranges. Ranges can be configured on a per channel

basis.

IS200EXICH1A Power Requirements and LEDs

This module consumes a maximum of 112 mA from the 5V bus on the PLC backplane. It also

requires a maximum of 41 mA from the backplane Isolated+24 Volt DC supply to power the

on-board power converter that provides isolated ±5V supplies to power the user-side circuitry (see

Table 3-9, Specifications).

There are two green LED indicators on the module which provide module and user supply

status. The top LED, MODULE OK provides module status information on power-up as

follows:

ON: status is OK, module configured

OFF: no backplane power or software not running (watchdog timer timed out)

Continuous rapid flashing: configuration data not received from CPU

Slow flashes, then OFF: failed power-up diagnostics or encountered code execution error

The bottom LED, Power Supply OK, indicates that the internally generated user-side +5V supply

is above a minimum designated level.

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