Rockwell Automation SA3100 Diag,Troublesht,Startup,Guide - Manual (Page 52)

A-2 Diagnositics, Troubleshooting, and Start-Up Guidelines
Ground Current Fault Bit 2
The Ground Current Fault bit is set if ground
current exceeds the hardware trip point. Hex Value: 0004H
Sug. Var. Name: FLT_GND@
Access: Read only
UDC Error Code: 1021
LED: EXT FLT
For models A001/Q001 and A003/Q003 the hardware trip point is 20A @ 10V. For
all other models it is 100A @ 10V.
Instantaneous Overcurrent Fault Bit 3
The Instantaneous Overcurrent (IOC) Fault
bit is set if either of the following conditions
is detected: Hex Value: 0008H
Sug. Var. Name: FLT_IOC@
Access: Read only
UDC Error Code: 1017
LED: P.M. FLT
• Output current is greater than 200% of the peak RMS current. Bits 0 to 5 in
register 204/1204 indicate which power device detected the overcurrent.
• An inverter power device fault is detected. Bit 6 in register 204/1204 will be set if
the IOC fault is due to a power device overcurrent.
Power Supply Fault Bit 4
The Power Supply Fault bit is set if the
output of the isolated +12V supply, or the
output of the external power supply for a G
or H frame drive, falls below the configured
low voltage threshold. Hex Value: 0010H
Sug. Var. Name: FLT_12V@
Access: Read only
UDC Error Code: 1022
LED: P.M. FLT
Register 222/1222 provides additional diagnostics if this fault occurs.
Charge Bus Time-Out Fault Bit 6
The Charge Bus Time-out Fault bit is set to
indicate any of the conditions listed below.
Register 222/1222 provides additional
diagnostics if this fault occurs. Hex Value: 0040H
Sug. Var. Name: FLT_CHG@
Access: Read only
UDC Error Code: 1024
LED: EXT FLT and
P.M. FLT
• The DC bus is not fully charged within 10 seconds after the bus enable bit
(register 100/1100, bit 4) is set.
• The drive is on and feedback indicates that the pre-charge contactor has opened.
• DC bus voltage is less than the value stored in the Power Los Fault Threshold
(PLT_E0%) tunable variable.
If the Charge Bus Time-Out Fault bit is set, verify that incoming power is at the
appropriate level. If the power level is correct, the problem is in the Power Module.