Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 333)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 333
Troubleshooting Chapter 6
Converter (Port 11) Faults
and Alarms (Frame 8 and
Larger) The table below contains a list of Converter-specific faults and alarms, the type of
fault or alarm, the action taken when the drive faults, the parameter used to
configure the fault or alarm (if applicable), and a description and action (where
applicable). These faults and alarms only apply to Frame 8 drives and larger.
Table 13 - Converter Fault and Alarm Types, Descriptions and Actions
Event
No. Fault/Alarm Text Type Fault
Action Configuration
Parameter Auto
Reset Description/Action(s)
11101
11201
11301 C1 Precharge
C2 Precharge
C3 Precharge Alarm 1 1. The AC line voltage is in the range of 50...300V (for 400V class drives)
or 50...400V (for 600V class drives). Precharge begins when the AC
line voltage reaches 300V or 400V.
2. The drive has been in precharge for more than 12 seconds. If the “Cn
Precharge” alarm persists for more than 30 seconds the drive will
fault. Following powerup or a fault reset, the converter will not issue
any voltage related alarms until the AC input voltage exceeds 50V in
order to prevent an alarm when a customer-supplied auxiliary power
supply is used.
3. The DC bus open circuit test may be cycling. If this test cycles for more
than 10 seconds, event 144/244 “Cn DC Bus Open” will occur.
Alarm:
• Check the line voltage in [Cn L12 Line Volt], [Cn L23 Line Volt], and
[CV L31 Line Volt] (port 11).
• Check the phase current in [Cn L1 Phase Curr], [Cn L2 Phase Curr], and
[Cn L3 Phase Curr] (port 11) and the bus voltage in [Cn DC Bus Volt]
(port 11). Line current, line voltage, and bus voltage sensing are all
performed on the converter gate firing board. If this alarm persists,
replace the converter gate firing board.
Fault:
• Verify that the current transducers have not all failed. If necessary,
replace all three current transducers.
• Verify that the DC link inductor has not failed. If necessary, replace
the DC link choke.
• Verify that the converter line and DC bus wiring is connected.
• Verify that the capacitor bank is properly installed and connected.
Non-Reset
Fault Coast
11102
11202
11302 C1 Phase Loss L1
C2 Phase Loss L1
C3 Phase Loss L1 Alarm 1 The AC line-to-line voltages are imbalanced, indicating an open AC
input phase.
• Check for an upstream AC line loss.
• Verify that the AC input line wiring is properly connected.
• Check the wiring harness to the converter gate firing board for loose
connections and/or damage. If necessary, replace the converter gate
firing board wiring harness.
11103
11203
11303 C1 Phase Loss L2
C2 Phase Loss L2
C3 Phase Loss L2
11104
11204
11304 C1 Phase Loss L3
C2 Phase Loss L3
C3 Phase Loss L3
11111
11211
11311 C1 SCR OvrTemp
C2 SCR OvrTemp
C3 SCR OvrTemp Alarm 1 Y An alarm occurs if the calculated SCR temperature exceeds 125 °C and a
fault occurs when the calculated SCR temperature exceeds 135 °C.
• Check for cooling problems - the heatsink cooling fan is running
slow, the enclosure filter or heatsink fins are dirty, or the ambient
temperature is too high.
Resettable
Fault Coast
11112
11212
11312 C1 HS OvrTemp
C2 HS OvrTemp
C3 HS OvrTemp Alarm 1 Y An alarm when the heatsink temperature exceeds 95 °C and a fault
when the heatsink temperature exceeds 100 °C.
• Check the NTC for a short or verify that it is connected.
• Check for cooling problems - the heatsink cooling fan is running
slow, the enclosure filter or heatsink fins are dirty, or the ambient
temperature is too high.
Resettable
Fault Coast