GE IS200EXHSG3A exciter high-speed relay driver

Description

GE General Electric Technical Specifications: IS200EXHSG3A

Relay contact life, when switching inductive loads, will IS200EXHSG3A approach resistive load contact life if

suppression circuits are used. The following figures are examples of typical suppression

circuits for AC and DC loads. The 1A, 100V diode shown in the DC load typical suppression

circuit is an industry standard 1N4934. The IS200EXHSG3A resistor and capacitor shown for AC load

suppression are standard components, available from most electronics distributors.

This chapter describes the Analog Input and Output modules for the Series 90-30

Programmable Logic Controller. Module IS200EXHSG3A specifications and wiring information are provided

for each of the available Analog I/O modules. The first part of this chapter describes how

analog information is handled in the Series 90-30 PLC, followed by a description of each of the

modules. Specific information for a particular IS200EXHSG3A analog module can be found in the description of

that module.

Currently available Analog I/O modules are listed in the following table (Table 3-1) along with

the chapter number where the description of each module can be found.

Analog Modules have the following basic features (refer to the following figure):

Removeable Terminal Board. You can remove the terminal board from the module in

order to wire it, if desired. Then, when you are finished wiring it, you can easily reinstall it

on the module. However, some prefer to leave it on the module when wiring. If you ever

need to replace a module, you don’t have to do any rewiring if your old terminal board is

still in good condition. Simply remove the wired terminal board from the old module and

install it on the new module if it is good condition. The terminal board screw terminals are

also convenient points for measuring voltages while testing or troubleshooting.

Hinged Front Cover. The cover is easily opened to access the terminal board connections.

For normal operation, it is kept closed to protect personnel from accidentally touching a hot

terminal. Note in the following figure that the back side of the front cover insert contains a

schematic diagram of the terminal board connections. The module catalog number

(IC693ALG391 in this example) is printed on the bottom of the front cover insert. The

module catalog number is also printed on the label on the side of the module. However, in

order to see this side label, the module has to be removed from the PLC

On the front side of the front cover insert are lines that correspond to the module’s I/O

points. You can temporarily remove the insert and write the signal name for each point on

the appropriate line to aid in testing or troubleshooting.

Also on the front side of the front cover insert, running vertically on the left edge of the

insert, is a colored line that identifies the type of module: Blue = DC, Red = AC, and Gray

= Analog.

Module Lens Cap. Located on the top front of the module, it covers the LED (Light

Emitting Diode) OK status light. This light indicates the basic status of the module. For

normal operation, the OK LED should be on.

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