www.pulsar.pl PSCU08348SEP
7
4. Connect the receiver (DC
/DC converters) cables to the AUX1÷AUX4 terminals at the terminal blocks of the
LP4/SEP strips.
5. Switch on the 230V AC supply (~230V).
6. Check the optical indication of the PSU operation:
LED lights L1 ÷ L4 (green) should light permanently on both
plates.
7. Close the cover after installing and checking the operation of the power supply.
A typical application of the PSCU08348SEP power supply is supplying four CCTV cameras using 8-pair
twisted pair cable, where three pairs are used for power distribution and one pair for transmitting video signal.
Schematic example of the installation is shown in Figure 1. The distance between the PSCU08348SEP power
supply unit and the DC/DC converters depends on the type of cable used and the current drawn by the camera.
The typical distances are shown in Table 7.
Typical distances between the power supply and the DC/DC converter (Table 7):
Cable type:
Cross-
section
[mm
2
]
According
to AWG
The distance between the PSCU08348 power supply unit
and the DC/DC converter:
Current consumption of the
camera: 0,8A/12VDC
Current consumption of the
camera: 1,2A/12VDC
UTP5e twisted pair cable,
one pc
0,2mm
2
24AWG
100 m
60 m
UTP5e twisted pair cable, 2
pcs
0,4mm
2
21AWG
200 m
120 m
UTP5e twisted pair cable, 3
pcs
0,6mm
2
19AWG
300 m
180 m
Stranded cable
0,25mm
2
23AWG
100 m
75m
Stranded cable
0,5mm
2
20AWG
250 m
150m
Stranded cable
0,75mm
2
18AWG
400 m
240m
Stranded cable
1,0mm
2
17AWG
500 m
300m
Stranded cable
1,5mm
2
15AWG
700 m
400m
The distances are given for the rated voltage of Un=230Vac and
Ta=20°C.
3. Optical indication.
The PSU is fitted with 8 green at the PCB, indicating DC voltage at the
AUX1÷AUX4 outputs. During normal
operation, the LED is permanently illuminated. In case of short-circuit or output overload, the LED is off.
4. Service and operation.
4.1 Overload or short-circuit of the power supply output (SCP activation).
The AUX1÷AUX4 outputs in both power supply boards are short-circuit protected by fuse inserts. In case of
fuse replacement, use only compatible replacement parts. If the output load current exceeds
Σ8,0A@30V DC (110% ÷
150% of the S power), the F fuse in the 230V AC circuit and/or
F1÷F4 fuses become permanently damaged. In case of
failure, replace the fuse with the same type.
4.2 Maintenance.
All maintenance procedures can be performed after disconnecting the power supply from the power network.
The PSU does not require any specific maintenance; however, its interior should be cleaned with compressed air if used
in dusty conditions. In case of fuse replacement, use only compatible replacement parts.
