82 Rockwell Automation Publication 20A-UM001N-EN-P - July 2013
Chapter 2 Troubleshooting
Table 2 - Fault Cross Reference
Clearing Alarms
Alarms are automatically cleared when the condition that caused the alarm is no
longer present.
SW OverCurrent 36 1 Drive output current has exceeded the 1ms
current rating. This rating is greater than the
3-second current rating and less than the
hardware overcurrent fault level. It is typically
200…250% of the drive continuous rating.
Check for excess load, improper DC
boost setting. DC brake volts set
too high.
If enabled, check level of flux
braking in parameter P549 [Flux
Braking %].
Trnsistr OvrTemp 9 1 Output transistors have exceeded their maximum
operating temperature.
1. Verify that maximum ambient
temperature has not been
exceeded.
2. Check fan.
3. Check for excessive load.
UnderVoltage 4 1
3
DC bus voltage fell below the minimum value.
Standard Control:
• 509V DC at 600V input
• 407V DC at 400/480V input
• 204V DC at 200/240V input
Enhanced Control:
• 375V DC at 600V input
• 300V DC at 400/480 input
• 160V DC at 200/240V input
Enable/Disable with [Fault Config 1] on page 58
.
Monitor the incoming AC line for
low voltage or power interruption.
UserSet1 Chksum 101 2 The checksum read from the user set does not
match the checksum calculated.
Re-save user set.
UserSet2 Chksum 102 2
UserSet3 Chksum 103 2
(1) See page 77 for a description of fault types.
No.
(1)
(1) Fault numbers not listed are reserved for future use.
Fault No.
(1)
Fault No.
(1)
Fault
2 Auxiliary Input 38 Phase U to Grnd 80 AutoTune Aborted
3 Power Loss 39 Phase V to Grnd 81…86 Port 1…6 DPI Loss
4 UnderVoltage 40 Phase W to Grnd 87 IXo VoltageRange
5 OverVoltage 41 Phase UV Short 90 Encoder Quad Error
7 Motor Overload 42 Phase VW Short 91 Encoder Loss
8 Heatsink OvrTemp 43 Phase UW Short 93 Hardware Fault
9 Trnsistr OvrTemp 48 Params Defaulted 100 Parameter Chksum
10 Heatsink LowTemp 49 Drive Powerup 101 UserSet1 Chksum
12 HW OverCurrent 51 Flt QueueCleared 102 UserSet2 Chksum
13 Ground Fault 52 Faults Cleared 103 UserSet3 Chksum
15 Load Loss 55 Cntl Bd Overtemp 104 Pwr Brd Chksum1
16 Motor Thermistor 63 Shear Pin 105 Pwr Brd Chksum2
17 Input Phase Loss 64 Drive Overload 106 Incompat MCB-PB
21 Output PhaseLoss 69 DB Resistance 107 Replaced MCB-PB
24 Decel Inhibit 70 Power Unit 108 Anlg Cal Chksum
25 OverSpeed Limit 71…75 Port 1…5 Adapter 111 Enable Hardware
29 Analog In Loss 77 IR Volts Range 112 Power Down Csum
33 Auto Rstrt Tries 78 FluxAmpsRef Rang 900…930 Fatal Faults
36 SW OverCurrent 79 Excessive Load
Table 1 - Fault Types, Descriptions and Actions (Continued)
Fault No.
Type
(1)
Description Action
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