ABB S3 - page 5

4 .5 .9
Rear
plane and power unit
These units have no fault monitoring or fault indication
. Fault on the back plane must
be traced from the units connected to the rear plane
.
4 .5 .10
Rectifier DSQC 235 AB
II
M
II
Service
A
8
Description
D : Red LED, FAULT,
illuminates with malfunction
B
: Green LED, OK, illuminates when
INIT N is high and the rectifier is
supplied by the main power .
4 : 25
Source of fault
(with incorrect test
value or fault indication)
•
~
Over voltage in intermediate link
•
~
To powerful feedback from robotmotors
so that the shunt regulator can't keep
the intermediate link voltage down
•
~
Over temperature rectifier, over
temperature shunt regulator, fault in the
main power
•
~
To high intermediate power,
enviroment temperature to high
•
~
To high intermediate power-feedback
from drive units
•
~
Some of the phases are missing or the
main power is to low
S3