Emerson 200I/48-NT5C05C - Manual (Page 53)

53
Emerson Energy Systems Rectifier 200I/48

NT5C05C Installation and User Manual
7. Troubleshooting
Table 16 - Diagnosing system faults
Fault symptom Possible causes
The RFA LED is lit. •
No ac input or input is out of bounds ( ac ON
LED is extinguished ).
•
AC Input / dc output circuit breaker is open.
•
The rectifier has received an HVSD signal from
the controller, or a TR signal is present.
•
An internal high voltage shutdown ( HVSD ) has
occurred.
•
Two cooling fans or fuses have failed.
•
The inrush fuse has blown.
•
The dc circuit breaker is open.
•
A thermal shutdown has occurred.
•
Ambient air temperature is high.
•
Air inlet / outlet air is blocked, or the air filter is
clogged.
•
A rectifier is in 'Start Time Delay' mode and the
RFA will cease when the required time delay has
elapsed.
•
Defective rectifier.
The HVSD LED is lit.
•
The internal high voltage shutdown point is set
to low ( below the float or equalize setting ).
•
The controller triggered a remote HVSD.
−−−− continued −−−−