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EN54-3A28
RED POWER
26
6.4. Technical outputs.
The PSU is equipped with galvanically isolated indication outputs changing status after a specified event:
EPS FLT
– output indicating AC power loss
.
The output indicates 230V AC power loss. Under normal status
– with the 230V AC supply on, the output is
closed. In case of power failure, the PSU will switch the output into the open position after a time lag determined in
the „EPS” configuration menu (see section 6.3.3, Table 10).
APS FLT
– output indicating battery failure.
The output indicates a failure in the battery circuit. Under normal status (during correct operation) the
output is closed. In case of failure, the PSU will switch the output into the open position. Failure can be triggered by
the following events:
- faulty batteries
- undercharged batteries
- disconnected batteries
- high resistance of the battery circuit
- battery voltage below 23V during battery-assisted operation
- battery fuse failure
- no continuity in the battery circuit
PSU FLT
– output indicating PSU failure
.
The output indicates the PSU failure. Under normal status (during correct operation) the output is closed. In
case of PSU failure, it will switch into the open position. Failure can be triggered by the following events:
- U
AUX1, AUX2
output voltage below 26V
- U
AUX1, AUX2
output voltage over 29,2V
- battery charging circuit failure
- blown F
AUX1
or F
AUX2
fuse - exceeding the rated current of the PSU
- activation of overvoltage protection OVP
- mains supply voltage over 254V AC
- mains supply voltage below 195V AC
-
to high battery temperature (>65°C)
- temperature sensor failure, t < -
20°C or t > 80°C
- enclosure opening - TAMPER
- internal damage of the PSU
The technical outputs have been made with galvan
ic isolation between the PSU’s systems and the
attached devices.
Fig. 10. Electrical diagram of technical outputs.
ALARM - technical output of collective failure indication.
Output indicating collective failure. In the case of failure at any EPS, APS, or PSU output or at the EXTi
input, the collective failure signal ALARM will be generated.
CAUTION!
In Fig.2 the set of contacts shows a potential-free status of the relay, which
corresponds to power supply collective failure of the PSU.
