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5. Functions
5.1. Technical outputs.
The power supply is fitted with relay indication outputs changing state upon the occurrence of a specific event.
Fig. 6. Electrical diagram of relay outputs.

EPS
– output indicating 230 V power loss
.
The output indicates 230 V power loss. Under normal status
– with the 230 V supply on, the output is
closed. In case of power failure, the PSU will switch the output into the open position after a time 10s.
(factory settings).
In case of a PSU version with a LCD, this time can be changed from the level of the
„EPS Output
Delay” menu (see Section 8.2.2).
1.
Fig. 7. EPS technical output.
CAUTION! In Figure the set of contacts shows a potential-free status of the relay, which corresponds to
power supply failure.

ALARM
– technical output of collective failure indication.
Output indicating collective failure. In the case of 230 V power failure, battery circuit failure,
PSU failure, or EXTi input activation, the collective failure signal ALARM will be generated.
Failure can be triggered by the following events:

230V power failure AC

faulty batteries

undercharged batteries

disconnected batteries

high resistance of the battery circuit

no continuity in the battery circuit

U
AUX1, AUX2
output voltage below 26 V

U
AUX1, AUX2
output voltage over 29,2 V

battery charging circuit failure

blown F
AUX1
or F
AUX2
fuse

PSU overload

to high battery temperature (>65°C)

temperature sensor failure, t < -
20°C or t > 80°C

enclosure opening
– TAMPER

internal damage of the PSU
Fig. 8. Technical output ALARM.