Delta RPI M30A Operation And Installation Manual page 65

Message
1. Power line is disconnected
HW Con. Fail
2. Current feedback circuit is
(F26)
1. RCMU is disconnected
RCMU Fail
2. Detection circuit malfunction
(F27)
1. One or more relays are
RLY Short
2. The driver circuit for the
(F28)
1. One or more relays are
RLY Open
2. The driver circuit for the
(F13, F29)
3. The detection accuracy is
1. Not totally independent or
Bus Unbal. 2. PV Array short to Ground
(F30) 3. Driver for boost is defective
4. Detection circuit malfunction
1. Driver for boost is defective
2. Voc of PV array is over
HW Bus OVR
3. Surge occurs during
(F31, F33, F35)
4. Detection circuit malfunction
1. Surge occurs during
AC Cur. High
2. Driver for inverter stage is
(F36, F37, F38,
F39, F40, F41)
3. Switching device is defective
4. Detection circuit malfunction
1. Test current loop is broken
2. CTP3 is defective
HW CT A Fail
3. Detection circuit malfunction
(F42)
Possible cause
inside the inverter
defective
sticking
relay malfunction
abnormal
relay malfunction
not correct for Vgrid and Vout
parallel between inputs
or disconnected
1000Vdc
operation
operation
defective
Error message and Trouble Shooting
FAULT
1. Check the power lines inside the inverter
2. Check the current feedback circuit inside
the inverter
1. Check the RCMU connection inside the
inverter
2. Check the detection circuit inside the
inverter
1. Replace the defective relay(s)
2. Check the driver circuit inside the inverter
1. Replace the defective relay(s)
2. Check the driver circuit inside the inverter
3. Check the Vgrid and Vout voltage detect
on accuracy
1. Check the inputs connections
2. Check the PV Array insulation
3. Check the driver circuit for boost inside
the inverter
4. Check the detection circuit inside the
inverter
1. Check the driver circuit for boost inside
the inverter
2. Modify the solar array setting, and make
the Voc less than 1000Vdc
3. N/A
4. Check the detection circuit inside the
inverter
1. N/A
2. Check the driver circuit in inverter stage
3. Check all switching devices in inverter
stage
4. Check the detect circuit inside the inverter
1. Check the connection of CNP4 to CNM4
2. Replay CTP3 with new one
3. Check the detection circuit inside the
inverter
65
Action