Delta RPI M30A_120 Operation And Installation Manual page 68

Error message and Trouble Shooting
Message
1. Test current loop is broken
HW CT B Fail
2. CTP4 is defective
(F43)
3. Detection circuit malfunction
1. Test current loop is broken
HW CT C Fail
2. CTP5 is defective
(F44)
3. Detection circuit malfunction
1. Large Grid harmonics
HW AC OCR
2. Switching device is defective
(F45)
3. Detection circuit malfunction
HW ZC Fail The detection circuit for
(F50) synchronal signal malfunction
1. Switching device in boost
DC Cur. High is defective
(F60, F61, 2. Driver for boost is defective
F70, F71) 3. Input current detection
circuit malfunction
Table 7-3 : Fault Message
Possible cause
FAULT
1. Check the connection of CNP4 to CNM4
2. Replace CTP4 with new one
3. Check the detection circuit inside the
inverter
1. Check the connection of CNP4 to CNM4
2. Replace CTP5 with new one
3. Check the detection circuit inside the
inverter
1. Check the utility waveform. Grid connection
of inverter need to be far away from
non-linear load if necessary
2. Check all switching devices in inverter
stage
3. Check the detection circuit inside the
inverter
Check the detection circuit for synchronal
signal inside the inverter
1. Check all switching device in boost
2. Check the driver circuit for boost inside
the inverter
3. Check input current detection circuit
68
Action