APPENDIX AALARM CODES
Alarm Codes
The following is a list of all MX
2
alarm codes. The alarm codes correspond to associate fault codes. In general, an alarm indicates a
condition that if continued, will result in the associated fault.
194
APPENDIX A - ALARM CODES
Alarm
Code
Description Notes
A02 Motor Overload Alarm
This occurs when the motor thermal content reaches the
90%. The MX
2
trips when it reaches 100%. The alarm
continues until the overload trip lockout is reset.
A10 Phase Rotation not ABC
This alarm exists while the MX
2
is stopped, line voltage is
detected and phase sensitivity parameter is set to ABC. If a
start is commanded, a Fault 10 occurs.
A11 Phase Rotation not CBA
This alarm exists while the MX
2
is stopped, line voltage is
detected and phase sensitivity parameter is set to CBA. If a
start is commanded, a Fault 11 occurs.
A12 Low Line Frequency
This alarm exists when the MX
2
has detected a line
frequency below the user defined low line frequency level.
The alarm continues until either the line frequency changes
to be in range or the fault delay timer expires.
A13 High Line Frequency
This alarm exists when the MX
2
has detected a line
frequency above the user defined high line frequency level.
The alarm continues until either the line frequency changes
to a valid frequency or the fault delay timer expires.
A14 Input power not single phase
This alarm exists while the MX
2
is stopped, set to single
phase mode, and line voltage is detected that is not single
phase. If a start is commanded, a Fault 14 occurs.
A15 Input power not three phase
This alarm exists while the MX
2
is stopped, set to a
three-phase mode, and single-phase line voltage is
detected. If a start is commanded, a Fault 15 occurs.
A21 Low Line L1-L2
This alarm exists while the MX
2
is stopped and low line
voltage is detected. If a start is commanded, a Fault 21
may occur.
A22 Low Line L2-L3
This alarm exists while the MX
2
is stopped and low line
voltage is detected. If a start is commanded, a Fault 22
may occur.
A23 Low Line L3-L1
This alarm exists while the MX
2
is stopped and low line
voltage is detected. If a start is commanded, a Fault 23
may occur.
A24 High Line L1-L2
This alarm exists while the MX
2
is stopped and high line
voltage is detected. If a start is commanded, a Fault 24
may occur.
A25 High Line L2-L3
This alarm exists while the MX
2
is stopped and high line
voltage is detected. If a start is commanded, a Fault 25
may occur.
A26 High Line L3-L1
This alarm exists while the MX
2
is stopped and high line
voltage is detected. If a start is commanded, a Fault 26
may occur.
A27 Phase Loss
This alarm exists while the MX
2
is running and a phase
loss condition is detected, but the delay for the fault has not
yet expired. When the delay expires, a Fault 27 occurs.
A28 No Line
This alarm exists while the MX
2
needs to be synchronized
or is trying to sync to the line and no line is detected.
A31 Overcurrent
This alarm exists while the MX
2
is 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.
A34 Undercurrent
This alarm exists while the MX
2
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.
A37 Current Imbalance
This alarm exists while the MX
2
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.
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