Gek-106465A Cio Remote Can Digital I/O Module; Input/Output Modules Description; Circuit Supervision And Contact Seal-In Circuits; Circuit Supervision - GE GEK-106465A Instruction Manual

Remote can digital i/o module

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I/O MODULES DESCRIPTION

5.1.

5.1.1.

CIO units can include type 2 boards. This type of board includes 4 voltage detectors for implementing tripping or

opening circuit supervision control logics.

5.1.2.

The current seal-in circuit is used for verifying the current condition in a circuit during the time that the tripping contact

remains closed. If the current in the tripping circuit is maintained over 100 mA, the function is sealed independently of

the status of the function that caused the trip.

This current seal-in function in tripping circuits is mainly used in applications where auxiliary contacts 52/a (in charge

of cutting the current in the tripping circuit) are very slow. This may cause that, once the function that produced the

trip is reset, the relay contact will open before the breaker auxiliary 52/a, even if the time delay of the first has expired.

By using this function, we prevent the relay contact from cutting the current (basically inductive and high) from the

tripping circuit, which could cause damage to the unit, as these currents exceed the nominal breaking characteristics.

The circuit and the current threshold of the function are as follows:

100 mA min

FIGURE 5-1 CURRENT SUPERVISION

GEK-106465A

CIO Remote CAN Digital I/O Module

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