Delta RPI M30A Operation And Installation Manual page 66

Error message and Trouble Shooting
Message
1. Test current loop is broken
2. CTP4 is defective
HW CT B Fail
(F43) 3. Detection circuit malfunction
1. Test current loop is broken
HW CT C Fail 2. CTP5 is defective
3. Detection circuit malfunction
(F44)
1. Large Grid harmonics
2. Switching device is defective
3. Detection circuit malfunction
HW AC OCR
(F45)
The detection circuit for
HW ZC Fail
synchronal signal malfunction
(F50)
1. Switching device in boost
DC Cur. High
(F60, F61,
2. Driver for boost is defective
F70, F71)
3. Input current detection
Table 7-3 Fault Message
Possible cause
is defective
circuit malfunction
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 curcuit for boost inside
the inverter
3. Check input current detection circuit
66
Action