Fet-Or Module Diagnostics; Active Signal Loop; Fet-Or Module Diagnostic Led Indications - GE Mark VIeS System Manual

To create a signal loop, when monitoring two devices, use the active signal output of device 1 and loop in the floating signal
output of device 2. In the event of malfunction, a diagnostic alarm is generated. Any number of devices may be looped in.
This signal combination saves wiring costs and logic inputs.

Active Signal Loop

FET-OR Module Diagnostics

The Redundancy OK (13/14) and ACB OK floating (23/24) floating signal contacts monitor FET-OR module functionality as
defined in the following table. Additionally, the Redundancy OK LED, I < I LED, and the bar graph can be used to evaluate
N
redundancy module functionality on site. To monitor redundancy, the nominal current of the upstream power supply units can
be set on the module using the rotary selection switch.

FET-OR Module Diagnostic LED Indications

416 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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