GE Industrial Solutions CPS2500D +-190V - Manual (Page 50)

Table 7-A: LED Truth Table
LED Indicators Condition Shelf Alarm
A B
OUT
IN Green Green
Green
Green
1 Both circuits receiving input voltage
within acceptable range with input current
below maximum input value, and
delivering acceptable output.
None
A B
OUT
IN Green
Green
1
Circuit A receiving input voltage within
acceptable range with input current below
maximum input value and delivering
acceptable output.
Circuit B has never received power.
None
A B
OUT
IN
1
Neither circuit has received acceptable
input voltage since insertion into powered
shelf.
None
A B
OUT
IN Green Red
Green
1
Input voltage has been interrupted to
circuit B. Occurs after circuit B has been
powered acceptably.
MIN
A B
OUT
IN Red Red
1
Input voltage has been interrupted to both
circuits A and B. Occurs after both
circuits have been powered acceptably.
MAJ
A B
OUT
IN Green
Red
Green
Green
1 Circuit B has internal failure but
acceptable input power.
Circuit A has acceptable input and output
power.
MIN
A B
OUT
IN Green Green
Red
Red
1
Both circuit A and circuit B have internal
faults while input power is acceptable.
MAJ
A B
OUT
IN Green Green
1
Load power exceeds source powere
delivery capability. Both circuits in input
limit mode.
MAJ
CPS2500D +/-190V Downstream System
7 - 4 Reference Information Issue 4 January 2008
Note: Minor and Major alarms are mutually exclusive. Only one can be
asserted at a time.