Rockwell Automation SA500 Diagnostics, Troubleshooting Guide - Manual (Page 37)

Drive Fault Register A-1
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PPENDIX
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Drive Fault Register
Drive Fault Register 202/1202
The bits in the Drive Fault register indicate the cause of a drive shutdown. The bits in this register are latched
until they are reset by setting the Fault Reset bit (bit 8) of the Drive Control register (100/1100, bit 8). After
turning the Fault Reset bit on, the drive may be re-started after turning the desired command bit in register
100/1100 off and then back on again. If the fault condition still exists, the identifying bit in this register will
immediately be set again.
The fault conditions reported in this register result in turning off the drive. The UDC task is not stopped
automatically if a drive fault occurs unless it is specifically instructed to do so in the application task. The user
must ensure that the AutoMax application task tests register 202/1202 and takes appropriate action if a fault
occurs.
Note that the status of this register is also reported in the error log for the task in which the error occurred.
Power Module Overtemperature Fault Bit 0
The Power Module Overtemperature Fault
bit is set if either of the following conditions
occurs:
+H[ 9DOXH +
6XJ 9DU 1DPH )/7B27#
$FFHVV 5HDG RQO\
8'& (UURU &RGH 
/(' 30 )/7
• The PMI detects that motor current exceeds 100% of the Power Module’s
continuous capacity at maximum current for a pre-determined amount of time. At
maximum rated current, this trip will occur in 0.5 second.
• Hardware detects that the temperature of the Power Module’s heatsink exceeds
the configured maximum rating.
Instantaneous Overcurrent Fault Bit 1
The Instantaneous Overcurrent Fault bit is
set if any of the three motor feedback
currents (Iu, Iv, Iw) exceeds 133% of
maximum RMS current. +H[ 9DOXH +
6XJ 9DU 1DPH )/7B,2&#
$FFHVV 5HDG RQO\
8'& (UURU &RGH 
/(' (;7 )/7
DC Bus Overvoltage Fault Bit 2
The DC Bus Overvoltage Fault bit is set if
the DC bus voltage exceeds 400 VDC. +H[ 9DOXH +
6XJ 9DU 1DPH )/7B29#
$FFHVV 5HDG RQO\
8'& (UURU &RGH 
/(' 30 )/7