Power supply ICOS-PS 3160 series Installation, use and maintenance manual - EN
Ver. 1.05 44
5.10 Status LEDs
The power supply unit features some LEDs on the front panel, indicating the status of the device and operation
errors, if any. There are six LEDs; the following image shows their position:
The characteristics and function of each LED are summarized in the following table:
Denomination Color Function
PWG Green
POWER GOOD: it indicates the status of the power supply unit.
If this LED is flashing, it means that the device is pre-charging the
bus capacitors or there are some anomalies and/or faults.
If the LED is on and steady, it means that the pre-charging phase
is over and the power supply unit is ready for operation.
BRK Orange
BRAKING: it switches ON at the same time as the dynamic brake
activation or automatic discharge of internal capacities (ICOS-PS
3162 only).
PHL Red
PHASE LOSS: it switches ON when one of the three power sup-
ply phases is missing. It is always turned off if the device is set to
single-phase operation.
OVL Red
OVERLOAD: it switches ON during the pre-charge phase if the
load is drawing current (not allowed) or when the power supply
unit output is overloaded during normal operation.
BRF Red
BRAKE FAULT: it switches ON in case of short-circuit of the brak-
ing/discharge resistor or in case of a resistor of too low ohmic val-
ue.
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