ComAp IG-NT GC Reference Manual page 25

CB fail – fdb mismatch:
BO: CB close/open
BO: CB UV coil
BO: CB ON coil
BO: CB OFF coil
BI: CB fdb
BI: CB fdb neg = 1
BO: CB status = 0
BO: CB fail
CB open command:
BO: CB close/open
BO: CB UV coil
BO: CB OFF coil
BI: CB fdb
BI: CB fdb neg
BO: CB status
Inteli NT GeCon-MARINE SPI, SW Version 3.2, ©ComAp – July 2015
IGS-NT-GeCon-MARINE-SPI-3.2.PDF
2s
<2s
1s
500 ms
2s
ON pulse is shortened/interrupted
and replaced by UV and OFF pulse
OFF pulse is activated until both
feedbacks return to the correct
position +2 seconds.
CB fail – If any inconsistence between
the two feedback signals is detected, CB
fail is issued.
Further behavior of UV output
depends on the system status. In
case of transition to cooling stays
off, if the Cb was opened manually
and the engine keeps running, it
activates again after timeout
elapses.
During CB opening the CB status
LBO is deactivated with change of
the first feddback status
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