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APPENDIX B - ALARM CODES
182
Alarm
Code
Description
A29
P.O.R.T. Timeout
A31
Over current
A34
Undercurrent
A35
Power Factor Leading
A36
Power Factor Lagging
A37
Current Imbalance
A38
Ground Fault
A47
Stack Overload Alarm
A53
Tachometer Signal Loss
A60
External Alarm on DI 1 Input
A61
External Alarm on DI 2 Input
A62
External Alarm on DI 3 Input
A63
External Alarm on DI 4 Input
A64
External Alarm on DI 5 Input
A65
External Alarm on DI 6 Input
A66
External Alarm on DI 7 Input
A67
External Alarm on DI 8 Input
A71
Analog Input Level Trip Alarm
Notes
This alarm exists while the MX3 is in Power Outage Ride
Through mode and it is waiting for line power to return.
When the PORT fault delay expires a Fault 29 shall occur.
This alarm exists while the MX 3is running and the average
current is above the defined threshold, but the delay for the
fault has not yet expired. When the delay expires, a Fault
31 occurs.
This alarm exists while the MX3 is running and the average
current is below the defined threshold, but the delay for the
fault has not yet expired. When the delay expires, a Fault
34 occurs.
This alarm exists while the MX3 is running and the
measured PF is leading the defined threshold, but the delay
for the fault has not yet expired. When the delay expires, a
Fault 35 occurs.
This alarm exists while the MX3 is running and the
measured PF is lagging the defined threshold, but the delay
for the fault has not yet expired. When the delay expires, a
Fault 36 occurs.
This alarm exists while the MX3 is running and a current
imbalance above the defined threshold is detected, but the
delay for the fault has not yet expired. When the delay
expires, a Fault 37 occurs.
This alarm exists while the MX3 is running and a ground
current above the defined threshold is detected, but the
delay for the fault has not yet expired. When the delay
expires, a Fault 38 occurs.
This occurs when the stack thermal rises above 105%.
This occurs when a non-valid or tachometer input signal is
detected. The alarm shall exist until a valid tachometer
feedback signal is detected or the fault delay timer has
expired. When the delay expires, a Fault 53 shall occur.
This alarm shall exist if DI 1 is programmed as a fault, is in
the fault state, but the fault timer has not yet expired.
When the timer expires a Fault 60 shall occur.
This alarm shall exist if DI 2 is programmed as a fault, is in
the fault state, but the fault timer has not yet expired.
When the timer expires a Fault 61 shall occur.
This alarm shall exist if DI 3 is programmed as a fault, is in
the fault state, but the fault timer has not yet expired.
When the timer expires a Fault 62 shall occur.
This alarm shall exist if DI 4 is programmed as a fault, is in
the fault state, but the fault timer has not yet expired.
When the timer expires a Fault 63 shall occur.
This alarm shall exist if DI 5 is programmed as a fault, is in
the fault state, but the fault timer has not yet expired.
When the timer expires a Fault 64 shall occur.
This alarm shall exist if DI 6 is programmed as a fault, is in
the fault state, but the fault timer has not yet expired.
When the timer expires a Fault 65 shall occur.
This alarm shall exist if DI 7 is programmed as a fault, is in
the fault state, but the fault timer has not yet expired.
When the timer expires a Fault 66 shall occur.
This alarm shall exist if DI 8 is programmed as a fault, is in
the fault state, but the fault timer has not yet expired.
When the timer expires a Fault 67 shall occur.
This alarm exists if the analog input exceeds the defined
threshold, but the delay for the fault has not yet expired.
When the delay expires, a Fault 71 occurs.