Fault Display Type Enable Potential Causes and Corrective Actions
Coolant Tank Level < 20 inches F/A SOP Cause
Drive initiated fault/alarm when
the LowWaterLevelFault_O SOP ag is set true and
the LowWaterLevelFaultEn_O ag is true to enable it.
The default is a fault, but it can be changed to an alarm by
setting the LowWaterLevelFaultWn_O ag true. This is
used in the Standard SOP for water-cooled drives as a trip
alarm.
Action
1. Check physical input connected to SOP ag.
2. Check sensor.
3. Check and ll tank.
Low Coolant Flow < 60% A SOP Cause
Drive initiated alarm when the LowWaterFlowAlarm_O
SOP ag is set true and the LowWaterFlowAlarmEn_O ag
is true to enable it. The default is an alarm and it cannot be
changed. This is used in the Standard SOP for water-cooled
drives as an alarm.
Action
1. Check physical input connected to SOP ag.
2. Check sensor.
Low Coolant Flow < 20% F/A SOP Cause
Drive initiated fault/alarm when
the LowWaterFlowFault_O SOP ag is set true and
the LowWaterFlowFaultEn_O ag is true to enable it. The
default is a fault, but it can be changed to an alarm by setting
the LowWaterFlowFaultWn_O ag true. This is used in the
Standard SOP for water-cooled drives as a trip alarm.
Action
1. Check physical input connected to SOP ag.
2. Check sensor.
Loss One HEX Fan
Note: Hex fans are used on a water
to air heat exchanger on water
cooled drives.
A SOP Cause
Drive initiated alarm when the LossOneHexFan_O SOP ag
is set true and the LossOneHexFanEn_O ag is true to en‐
able it. The default is an alarm and it cannot be changed. This
is used in the Standard SOP for water-cooled drives as an
alarm.
Action
1. Check physical input connected to SOP ag. Check sensor.
2. Check for faulty fan.
3. Check for obstruction.
Troubleshooting Faults and Alarms
11.13 Dedicated I/O for Input Protection
NXGPro+ Control Manual
Operating Manual, A5E50491925A 491
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