ComAp IM-NT-BB - Page 81

InteliMains
NT
, SW version 3.0
InteliMains-NT-BTB-3.0-Reference Guide.pdf, ©ComAp – June 2013
81
CB fail – fdb mismatch:
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1s
<2s
CB UV coil
CB ON coil
CB OFF coil
CB fdb
CB fdb neg
CB close
/
open
CB status
CB fail
2s
500ms
2s
BO/BI
CB open command:
0
1
0
1
0
1
0
1
0
1
0
1
0
1
CB UV coil
CB ON coil
CB OFF coil
CB fdb
CB fdb neg
CB close
/
open
2s
CB status
BO/BI
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. Fail is
active until Fault Reset is pushed.
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.