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PSAC04244
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2.2 Installation procedure.
1). Before installation, make sure that the voltage in the 230V power-supply circuit is cut off.
2). Mount the PSU in a selected location and connect the wires.
3). Connect the power cables to the L-N terminals. Connect the ground wire to the terminal marked by the earth symbol
–
“
”. Use a three-core cable (with a yellow and green PE protection wire) to make the connection. Lead the cables to the
appropriate terminals of the connection board through the bushing.
The shock protection circuit shall be performed with a particular care, i.e. the yellow and green
wire coat of the power cable shall stick to one side of the terminal marked with the '
' earth
symbol in the PSU enclosure. Operation of the power supply without a properly made and fully
operational shock protection circuit is UNACCEPTABLE! It can result in device damage or an
electric shock.
4).
Connect the receivers’ cables to the AUXx- COM connectors of the terminal block on the LB4/24V/27V/AW pcb.
5).
If necessary, connect the devices’ wires (alarm panel, controller, indicator, etc.) to the PSU’s technical outputs:
-
FPS
output indicating fuse activation (output of the LB4/24V/27V/AW strip)
-
TAMPER
output indicating unwanted opening of the PSU enclosure
6). In case of installation where significant voltage drops occur in the resistance of the cables leading to the receivers,
there is a possibility of (step) voltage value correction by the U1/U2 jumpers. Adjustment in the output voltage value 24V
AC/27V AC is independent for each AUX output.
7). Restore the mains power ~230 V AC.
8). Check the LED indication for PSU operating status: LEDs L1
÷L4 (green) should be constantly illuminated.
9). Once the installation and operation control have been completed, the enclosure can be locked.
3. Operating status indication.
The PSU is equipped with LED indication of operation status. The presence of power at the outputs of the PSU is
indicated by the illumination of green LEDs on the PCB of the LB4/24V/27V/AW strip (module). A failure is indicated by a
red LED
[!] L
FPS
. The PSU status can be remotely controlled through the FPS technical output.
3.1 LED indication.
L
1….L4
green LEDs indicate power at the outputs:
AUX1…..AUX4.
In case of a power loss at the output (fuse burn/PTC activation), an appropriate diode goes out (L1 for AUX1, L2 for
AUX2 etc.).
LED [!] L
FPS
red diode indicates a failure at the at least one AUX output (output number is indicated by a green
diode).
3.2 Technical outputs.
The PSU has some indication outputs that enable providing information about a failure or tampering.
FPS
– output indicating a fuse failure (output of the LB4/24V/27V/AW strip).
In a normal status (under proper operation), the FPS technical output is fault to ground (GND). When any of the
fuses get damaged, the output is switched into hi-Z - high impedance state. The failure status is also indicated
by the L
FPS
red diode.
Fig. 5. Electrical diagram of OC output.
TAMPER -
output indicating unwanted opening the power-supply unit,
volt-free (potential-free) contacts in the
output indicate the door status, unit closed: NC, unit opened: NO