IGS-NT Combi, SW Version 3.0, ©ComAp – May 2013
IGS-NT-Combi-3.0 Reference Guide.PDF
Binary output: GCB status
This output indicates the GCB position, how it is internally considered in the
controller. The position is based on GCB feedback input and optionally also on the
GCB fdb neg input.
If only the positive feedback input is used the output mirrors the feedback.
If both feedbacks are used and they match each other the output
indicates the GCB position according to the feedbacks.
If both feedbacks are used, however they do not match each other, the
output remains in previous position when they matched.
The output can be used for indication of the GCB position.
Binary output: MCB status
This output indicates the MCB position, how it is internally considered in the
controller. The position is based on MCB feedback input and optionally also on the
MCB fdb neg input.
If only the positive feedback input is used the output mirrors the feedback.
If both feedbacks are used and they match each other the output
indicates the MCB position according to the feedbacks.
If both feedbacks are used, however they do not match each other, the
output remains in previous position when they matched.
The output can be used for indication of the MCB position.
Binary output: Gen params OK
This output indicates that the generator actually provides proper voltage and
frequency. The output is closed while the gen-set is running (regardless of
whether GCB is closed or not) and all generator electrical parameters are in
limits.
NOTE:
This output combined with a PLC block Delay can be used for switching on/off of
some auxiliary devices (e.g. cooling pump), that are supplied directly from
generator (before GCB). The delay is reccommended to allow the generator
getting stable and avoid unnecessary switching the auxiliary device on and off just
after start.
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