Rockwell Automation 20P PowerFlex Digital DC Drive - Manual (Page 203)

Rockwell Automation Publication 20P-UM001I-EN-P - February 2013 203
Troubleshooting Chapter 4
Heatsink OvrTemp 8 2 The heatsink temperature is too high
Possible causes include:
• The surrounding air temperature is too high.
Lower the surrounding air temperature.
• The drive’s cooling fans have failed (drives > 110 A). Check the fan fuses and fans.
• If the fan fuses have failed, replace the fuses. (The fans are
protected by the fuses in the power supply circuit and are
contained on the Switching Power Supply circuit board in frame
A and B drives only. See Control Power Circuit Protection Fuses on
page
233 .)
• If the fans have failed, replace the fans.
• The heatsink is dirty. Clean the heatsink.
Interrupt Error 131 2 A non-resettable software error has occurred in the main
application. Report this error to the manufacturer.
Inverting Fault 37 2 A digital input (Pars 133…144) configured as 64 “Invert Flt”
has been removed. Check the status of the inverting fault device connected to the
digital input.
Main Contactor 10 2 One of the following has occurred:
• The Main and/or Dynamic Brake (DB) contactor failed to
open or close in the proper amount of time.
• A digital input and/or relay output 1 is incorrectly wired
and/or configured.
• Wiring to a digital input configured for contactor has
opened.
• Check all contactor wiring and drive jumpers. Repair or replace
the contactor(s) if the problem(s) persist.
• Check the digital input and/or relay output 1 (terminals 35 and
36) wiring and configuration using Pars 1391 [ContactorControl],
1392 [Relay Out 1 Sel] and [Digital Inx Sel]. See Using Contactors
on page 31 for more information.
Motor Overload 7 1 The selected motor overload current level (set in Par 179
[Nom Mtr Arm Amps]) has been exceeded. The limits are
based on the value of Par
376 [MtrOvrld Type]. 0
“StandardDuty” is 150% for 60 sec. or 200% for 3 sec. 1
“HeavyDuty” is 200% for 1 minute (250% for 30 sec).
Reduce the motor load, current limits, and/or ramp times.
Note: Configurable with Par 479 [MtrOvrld Flt Cfg].
Motor Over Temp 16 1 The motor has exceeded its temperature rating (as signaled
by the thermistor connected to the drive terminals 78 and
79). Possible causes include:
• The motor does not have a thermistor and there is no
resistor between terminals 78 and 79 on the drive.
See Thermistors and Thermal Switches on page 62 for configuration
information.
• The cable between the thermistor connection on the
motor and terminals 78 and 79 on the drive has been
broken.
Check and repair any damage to or loss of connection of the
thermistor cables between the motor and drive.
• The overheating of the motor may have been caused by
one of the following:
• The Load cycle is too extreme.
• The surrounding air temperature at the site of motor is
too high.
• The motor has an external fan and the fan failed.
• The motor does not have an external fan and the load is
too large at low speeds. The cooling effect of the
internal fan on the motor shaft is too low for this load
cycle.
Reduce the load.
Reduce the surrounding air temperature.
Replace the motor fan.
Reduce the load cycle or fit the motor with an external fan.
Note: Configure with Par 365 [OverTemp Flt Cfg].
No Fault 0 – When present in the fault queue in the drive only, this fault
indicates that there are currently no faults in the drive. Informational only.
2 When displayed on the HIM, this fault indicates that the
SA-SB terminal on a frame B or C drive is incorrectly
configured. For frame B or C drives only, verify that terminal SA-SB is properly
configured for the control circuit input power input voltage used.
See Control Circuit Input Power on page
65 .
Overcurrent 13 1 An overcurrent has occurred in the motor circuit. Possible
causes include:
• There is a short-circuit or ground fault at the output of the
drive.
Verify the armature circuit wiring is correct.
• The current regulator was not properly fine tuned. See Tune the Current Regulator on page 97 .
• The value of Par 584 [OverCurrent Thr] is too low. Increase the value of Par 584 [OverCurrent Thr] accordingly.
Overspeed 25 2 The encoder or tachometer feedback indicated a speed that is
more than the value of Par
585 [Overspeed Val].
Remove the excessive load or overhauling conditions or increase the
value of Par
585 [Overspeed Val].
Note: Configurable with Par 585 [Overspeed Val].
Params Defaulted 48 2 User parameters have been reset to their default values. Informational only.
Fault Name Number Type (1) Description/Possible Cause(s) Action(s)