Caen ELS LiAM 6005 User Manual page 29

LiAM User's Manual
3.1.1.1 Voltage Rail Fuses
The current drawn from the voltage rails (both positive and negative) is
protected by fuses.
The rated fusing current is 8A-T and both the fuse holders are accessible from
the module rear panel and can be substituted. Installed fuses are 5 × 20 mm format.
3.1.1.1 Circuit Breaker
The circuit breaker, placed in front of the power supply unit, allows users to turn
on and off the LiAM power unit and also protects it from faults caused by
transformers malfunctions and/or short circuits. The circuit breaker turns the power
supply off if a fault condition arises. The circuit breaker position should be found as
after a fault condition – i.e. set to 0.
shown in
Figure 19
3.1.1.1 Rails Under-voltage Protection
The module voltage rails are continuously monitored by the internal logic in
order to verify their correct operation. If at least one of the two voltage rails (positive
and/or negative) drops below a pre-defined threshold, the module signals a fault
condition. This fault protection always trips whenever a voltage rail fuses has blown.
3.1.1.1 AC-Phase Fail
If at least one of the phases is missing, the module internal protection of AC-
phase fail trips and generates a fault condition that automatically turns the module
output off.
The AC OK green light on the module front panel turns off every time this fault
occurs. When all three input phases are correctly into operation, the module front
LED should be as in
29
Figure 19: input circuit breaker
:
Figure 20
LiAM Description