GE IS200ICBDH1ACB MARK VI CONTROL CARD

Description

GE General Electric Technical Specifications: IS200ICBDH1ACB

There are six Form C output relays (see the SPECIFICATIONS for ratings). Five of the six relays are always non-failsafe,

R6 Service is always failsafe. As failsafe, R6 relay will be energized normally and de-energize when called upon to operate.

It will also de-energize when control power to the IS200ICBDH1ACB is lost and therefore, be in its operated state. All other relays, being

non-failsafe, will be de-energized normally and energize when called upon to operate. Obviously, when control power is lost

to the 489, these relays must be de-energized and therefore, they will be in their non-operated state. Shorting bars in the

drawout case ensure that when the IS200ICBDH1ACB is drawn out, no trip or alarm occurs. The R6 Service output will however indicate

that the 489 has been drawn out. Each output relay has an LED indicator on the 489 front panel that comes on while the

associated relay is in the operated state.

R1 TRIP: The trip relay should be wired such that the generator is taken offline when conditions warrant. For a breaker

application, the NO R1 Trip contact should be wired in series with the Breaker trip coil.

Supervision of a breaker trip coil requires that the supervision circuit be paralleled with the R1 TRIP relay output con

tacts, as shown in Figure 2–9: TYPICAL WIRING DIAGRAM on page 2–7. With this connection made, the supervision

input circuits will place an impedance across the contacts that will draw a current of 2 to 5 mA (for an external supply

voltage from 30 to 250 V DC) through the breaker trip coil. The supervision circuits respond to a loss of this trickle cur

rent as a failure condition. Circuit breakers equipped with standard control circuits have a breaker auxiliary contact per

mitting the trip coil to be energized only when the breaker is closed. When these contacts are open, as detected by the

Breaker Status digital input, trip coil supervision circuit is automatically disabled. This logic provides that the trip circuit

is monitored only when the breaker is closed.

R2 AUXILIARY, R3 AUXILIARY, R4 AUXILIARY: The auxiliary relays may be programmed for numerous functions

such as, trip echo, alarm echo, trip backup, alarm or trip differentiation, control circuitry, etc. They should be wired as

configuration warrants.

R5 ALARM: The alarm relay should connect to the appropriate annunciator or monitoring device.

R6 SERVICE: The service relay will operate if any of the IS200ICBDH1ACB  diagnostics detect an internal failure or on loss of control

power. This output may be monitored with an annunciator, PLC or DCS.

The service relay NC contact may also be wired in parallel with the trip relay on a breaker application. This will provide

failsafe operation of the generator; that is, the generator will be tripped offline in the event that the 489 is not protecting

1. Simple annunciation of such a failure will allow the operator or the operation computer to either continue, or do a

sequenced shutdown.

Relay contacts must be considered unsafe to touch when the system is energized! If the customer requires

the relay contacts for low voltage accessible applications, it is their responsibility to ensure proper insula

tion levels.

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The maximum number of 8-Channel Analog Current/Voltage Output modules that can be installed

in a system are:

4 in a system using CPU Models 311, 313, or 323

8 in a system using CPU Model 331

32 in a system using CPU Models 340 and 341

64 in a system using CPU Models 350 – 364

Other Configuration Considerations

When planning the module configuration for your application you must also consider the load

capacity of the installed power supply and the total load requirements of all modules that are

installed in the baseplate.

Refer to Chapter 1 in this manual for details on power supply, baseplate, and module load

requirements. The following table lists the specifications for this module. Note that test conditions,

unless otherwise noted, are: VUSER = 24 VDC at an ambient temperature of 25 C (77 F)

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