Rockwell Automation SA3000 High Power Modules - Manual (Page 38)

4-6 High Power SA3000 AC Power Modules
4.3.1.4 Instantaneous Overcurrent Fault
The Instantaneous Overcurrent Fault bit (bit 3) is set in the Fault register (202/1202) if
an overcurrent is detected in one of the power devices (IGBTs). Register 204/1204,
bits 0-5, indicates which power device experienced the overcurrent. When 972A and
1457A SA3000 Power Modules are being used, registers 220/1220 and 221/1221
indicate the status of the B and C Power Modules. Error code 1017 will also be
displayed in the error log of the UDC task in which the fault occurred.
4.3.1.5 Local Power Interface Fault
The Local Power Interface Fault bit (bit 4) is set in the Fault register (202/1202) if the
power supply voltage on the LPI module is not within tolerance. Error code 1022 will
also be displayed in the error log of the UDC task in which the fault occurred.
4.3.1.6 Charge Bus Time-Out Fault
The Charge Bus Fault bit (bit 6) is set in the Fault register (202/1202) if one of the
following occurs:
• the internal 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 Loss Fault Threshold
(PLT_E0%) tunable variable.
If this bit is set, verify that the incoming DC bus power is at the appropriate level. If the
power level is correct the problem is in one of the SA3000 Power Modules. Bit 8 in
register 204/1204, 220/1220, or 221/1221 will be set to indicate which Power Module
is caused the fault. Error code 1024 will also be displayed in the error log of the UDC
task in which the fault occurred.
4.3.1.7 Overtemperature Fault
The Overtemperature Fault bit (bit 7) is set in the Fault register (202/1202) if the fault
level thermal switch (85
o
C (185
o
F)) in the Power Module opens. Bit 12 in register
204/1204, 220/1220, or 221/1221 will be set to indicate which SA3000 Power Module
is caused the fault. Error code 1016 will also be displayed in the error log of the UDC
task in which the fault occurred.