Delta RPI-M20A User Manual

FAULT
Message Possible cause Action
HW CT C Fail
1. Test current loop is broken
2. CSC3 is defective
3.
Detection circuit malfunction
1. Check the connection of WC3 to CNC16
2. Replace CSC3 with new one
3. Check the detection circuit inside the
inverter
1. Large Grid harmonics
2.
Switching device is defective
3. Detection circuit malfunction
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
The detection circuit for
synchronal signal malfunction
Check the detection circuit for synchronal
signal inside the inverter
HW AC OCR
HW ZC Fail
DC Current
High
1. Switching device in boost
is defective
2.
Driver for boost is defective
3. Input current detection
circuit malfunction
1. Check all switching device in boost
2.
Check the driver curcuit for boost inside
the inverter
3. Check input current detection circuit
Table 7-3 Fault Message
45
Error message and Trouble Shooting

Delta RPI-M20A Specifications

General

Brand	Delta
Model	RPI-M20A
Category	Inverter
Language	English