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HPSBOC1824B
7
RED LED:
•
on – the PSU is supplied with 230V AC
•
off – no 230V AC supply
GREEN LED:
•
on – DC voltage in the AUX output of the PSU
•
off – no DC voltage in the AUX output of the PSU
7. Check the PSU operation indicator: green LED.
8. Check the PSU output voltage:
- the PSU voltage without load should amount to U=27,6V DC.
9. After installing and checking proper working, the enclosure can be closed.
3. Operating status indication.
3.1 LED indication of operating status.
The PSU is equipped with two diodes on the front panel:
Moreover, the PSU is equipped with 3LEDs on the PCB board:
- red LED (Fig.2, element 1) normal status (AC power): permanently illuminated. AC power absence is
indicated by the AC diode going out.
Caution! LED indicates power absence if the outage lasts >10s.
- green LED (Fig.2, element 2) indicates DC power at the PSU output. Under normal status the diode is
permanently illuminated. In case of a short circuit or an overload, the diode is off.
- green LED (Fig.2, element 3) indicates battery voltage level. Under normal status (U
BAT
> 23V) the diode is
permanently illuminated. In case of decrease of battery voltage (U
BAT
< 23V) the diode is off.
3.2 Technical outputs
The PSU has indication outputs:
FAC - absence of AC supply output: - OC type output that indicates AC power loss. Under normal status,
with 230V AC supply, the output is connected to ground (L level – 0V). In case of power loss, the PSU will
switch the output into high impedance state hi-Z after approx. 10s.
FAC - absence of AC supply output: - relay output indicating the absence of AC supply. In case of power
loss, the PSU module will switch the relay contacts after approx. 10 seconds.
CAUTION! In Fig.2. the contact set in the potential-free status corresponds to a state with no AC
power (AC power failure).
FPS – technical output indicating absence of DC voltage at the PSU: OC type output indicating the PSU
failure. In normal state (during correct operation) the output is connected to ground (L level – 0V). In case
of absence of DC voltage at the output (e.g. short circuit), the output is switched into high impedance state
– hi-Z.
FLB – technical output indicating battery voltage: OC type output. Under normal status (U
BAT
> 23V) the
output is connected to ground (L level – 0V). In case of decrease of battery voltage (U
BAT
< 23V) the output
is switched into high impedance state – hi-Z.
