S&C PureWave SMS-250 Operation And Maintenance page 41

Table 9. PureWave SMS-250 Trip Offline Alarms—continued
Alarm
Execution Frame Indicates the software has a second loop that is executed
Overrun during the first loop, which can result in unexpected current
Troubleshooting Tip: Reset the alarm and contact S&C
Electric Company.
IGBT 1 Over Indicates the IGBT 1 current went beyond 880 A
Current Troubleshooting Tip: It is possible that a utility transient
caused the alarm. Check the broken thermistor alarms
for all phases. If they are clear, the system can be reset. If
the broken thermistor alarms are present, do not reset the
alarm. Contact S&C Electric Company.
IGBT 2 Over Indicates the IGBT 2 current went beyond 880 A
Troubleshooting Tip: It is possible that a utility transient
Current
caused the alarm. Check the broken thermistor alarms
for all phases. If they are clear, the system can be reset. If
the broken thermistor alarms are present, do not reset the
alarm. Contact S&C Electric Company.
IGBT 3 Over Indicates the IGBT 3 current went beyond 880 A
Troubleshooting Tip: It is possible that a utility transient
Current
caused the alarm. Check the broken thermistor alarms
for all phases. If they are clear, the system can be reset. If
the broken thermistor alarms are present, do not reset the
alarm. Contact S&C Electric Company.
Inverter Stop Indicates the inverter has stopped operating (The battery and
utility are disconnected .)
Troubleshooting Tip: Twist the inverter stop button
clockwise to clear this alarm.
Parameter Cal Nv Indicates the main processor found corrupt data where the
Error parameter and calibration values are stored
Troubleshooting Tip: Power cycle the PureWave SMS-250.
If the alarm still remains, contact S&C Electric Company.
Reverse Phase Indicates the inverter is connected to a utility that is rotating
Rotation L1-L3-L2 instead of L1-L2-L3, with the voltage rising zero
crossing occurring on L1, then L2, and finally L3, as expected
Troubleshooting Tip: If this alarm is on and stays on, the
phase rotation should be corrected by swapping the
utility connection wires on L2 and L3.
SCADA or HMI Indicates SCADA or the HMI commanded a trip offline to take
Trip Offline the PureWave SMS-250 system offline
Troubleshooting Tip: SCADA must send a 0 to the SCADA
trip offline bit register or the local HMI must send a 0 to
the HMI trip offline bit register to clear this alarm.
Description
S&C Instruction Sheet 659-520
Operation
Reset Type
MANUAL
MANUAL
MANUAL
MANUAL
SELF
MANUAL
SELF
MANUAL
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