Smitec ICOS-PS 3161 - Page 50

Power supply ICOS-PS 3160 series Installation, use and maintenance manual - EN
Ver. 1.05 50
In these cases, the diagnosis of the problem causing the alarm must also take into consideration the informa-
tion coming from the servodrives connected to the power supply unit, according to the following table.
Condition
PWG
LED
PHL
LED
OVL
LED
BRF
LED
PWG
output
ALARM
output
Servo
drivers
Meaning
Input
supply
voltage
<120VAC
Lamp Off Off Off 0 0
V o l t a g e
<170VDC
Supply voltage too low
(line voltage drop,
broken fuse, circuit-
breakers opening).
Wait for the reset
signal.
Output
overload
(see
tripping
curves)
Lamp Off On Off 0 1
Voltage
>250VDC
Output overload.
NOTE: disconnect
the load in order to
reduce the risk of
damaging the power
supply unit.
Wait for the reset
signal.
Power
supply
missing
phase
Lamp On Off Off 0 0
Voltage
>250VDC
One of the three
phases of power
supply is missing or the
power supply unit has
not been set to single-
phase operation.
Wait for the reset
signal.