Rockwell Automation Publication 750-PM001N-EN-P - February 2017 309
Troubleshooting Chapter 6
Drive Fault and Alarm
Descriptions
Tab le 10 contains a list of drive-specific faults and alarms and includes the
following information:
• The fault or alarm type
• The action that is taken when the drive faults
• The parameter that is used to configure the fault or alarm (if applicable)
• A description and action (where applicable)
The faults and alarms that are listed in Ta ble 1 0
only apply to non-Integrated
Motion applications. See Tab l e 39
on page 527 for a list of Integrated Motion
faults.
Table 10 - Drive Fault and Alarm Types, Descriptions, and Actions
Event
No.
Fault/Alarm Text Type Fault
Action
Configuration
Parameter
Auto
Reset
Description/Action(s)
0No Entry
2 Auxiliary Input Resettable Fault Coast 157
[DI Aux Fault] Y An auxiliary input interlock is open. A condition within the application
is not allowing the drive to energize the motor and the digital input
that is assigned in P157 [DI Aux Fault] has forced this fault.
3 Power Loss Configurable 449
[Power Loss Actn] Y The DC bus voltage remained below the [Pwr Loss n Level] of nominal
for longer than the time programmed in [Pwr Loss n Time].
4 UnderVoltage Configurable 460
[UnderVltg Action] Y If the bus voltage indicated in P11 [DC Bus Volts] falls below the value
set in P461 [UnderVltg Level] an undervoltage condition exists.
5 OverVoltage Resettable Fault Coast Y The DC bus voltage exceeded the maximum value.
See P11 [DC Bus Volts].
7 Motor Overload Configurable 410
[Motor OL Actn] Y An internal electronic overload trip has occurred.
See P7 [Output Current], P26 [Motor NP Amps, P413 [Mtr OL Factor],
and/or P414 [Mtr OL Hertz].
8 Heatsink OvrTemp Resettable Fault Coast Y The heatsink temperature has exceeded 100 % of the drive
temperature.
Heatsink over temperature occurs between 115…120 °C. The exact
value is stored in drive firmware.
See P943 [Drive Temp Pct] and/or P944 [Drive Temp C].
9 Trnsistr OvrTemp Resettable Fault Coast Y The output transistors have exceeded the maximum operating
temperature.
See P941 [IGBT Temp Pct] and/or P942 [IGBT Temp C].
If using the drive on a chiller plate, P38 [PWM Frequency] must be set
to 2 kHz.
10 DynBrake OvrTemp Alarm 1 The dynamic brake resistor has exceeded its maximum operating
temperature.
Check settings of parameters P382 [DB Resistor Type] through P385
[DB ExtPulseWatts].
12 HW OverCurrent Resettable Fault Coast Y The drive output current has exceeded the hardware current limit.
Insulation Resistance (IR) test the wiring to motor.
13 Ground Fault Resettable Fault Coast Y A current path to earth ground greater than 25 % of drive rating has
occurred.
14 Ground Warning Configurable 466
[Ground Warn Actn] The ground current has exceeded the level set in P467 [Ground Warn
Lvl].
15 Load Loss Configurable 441
[Load Loss Action] The output torque current is below the value programmed in P442
[Load Loss Level] for a time period greater than the time programmed
in P443 [Load Loss Time].
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