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PSBS1512A
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
3. Indications.
3.1 LED indication.
The PSU is equipped with two diodes on the front panel:
Moreover, the PSU is equipped with three diodes: AC, LB, AUX. They are placed on the PCB of the PSU
and indicate its operation status.
AC - red diode
: under normal status (AC supply) the diode is permanently illuminated. The absence of AC
supply is indicated by the AC diode going off.
LB - red diode
: indicates the battery charging process; the intensity of illumination is dependent on the
charging current.
AUX
-
green diode
: indicates the DC supply status in the output of the PSU. Under normal status, the
diode is permanently illuminated. In case of short-circuit or overload, the diode goes off.
3.2 Technical outputs:
The PSU is equipped with indication outputs.
FAC - absence of AC supply output
: - relay output indicating absence of AC supply. In case of power
loss, the PSU will switch the relay contacts after a time period set by the T
AC
jumpers (J1, J2).
Caution!
In Fig.2. the contact set in the potential-free status corresponds to a state with no AC
power (AC power failure).
TAMPER - output indicates opening the power-supply unit:
volt-free (potential-free) contacts in the
output indicate the door status, unit closed: NC, unit opened: NO
4. Operation and use.
4.1 Overloads or short circuits.
The AUX output of the PSU is equipped with the PTC polymer fuse protection. If the load exceeds
I
max.
(load 110% ÷ 150% @25ºC of the PSU power), the output voltage is automatically cut off and indicated by the
green diode going off. Cut off the output load for approximately 1 minute to restore the output power.
In the case of the short-circuit to the AUX, BAT output, (load 200% ÷ 250% of the PSU power) or incorrect
connection of the battery, the fuse F
BAT
in the battery circuit becomes permanently damaged and the restoration of
the voltage at the BAT output requires the replacement of the fuse.
4.2 Battery-powered operation.
Battery reverting in case of main power outage.
In order to run the PSU from the battery only, connect the BAT connectors in accordance with the signs:
+ BAT red to ‘plus’ and, - BAT black to 'minus’ then press the START button on the main board and hold it for 5
seconds.
The PSU contains the discharged battery disconnection system (UPV), configured through
the P
BAT
pins. The battery protection is on after removing the P
BAT
jumper.
4.3 Maintenance.
Any and all maintenance operations may be performed following the disconnection of the PSU from the
power supply network. The PSU does not require performing any specific maintenance measures, however, in
case of significant dust rate, its interior is recommended to be cleaned with compressed air. In case of fuse
replacement, use a replacement of the same parameters.
