www.pulsar.pl POE044812B
GREEN POWER CCTV PoE
9
3.2. Technical outputs.
The PSU has the following indication outputs:
FPS
– technical output of the PSU status
:
- OC type output indicating failure (short-circuit, overload). During normal operation, shorted to ground
– L state
(0V). In case of power loss, the FPS technical output is switched into hi-Z state (high impedance) at least at one of
the AUX outputs.
Fig. 6. Electrical diagram of the OC output.
- relay output. In case of failure, relay contacts are switched automatically.
Fig. 7. Electrical diagram of the relay output.
CAUTION!
The arrangement of contacts at the figure 7 shows a potential-free status of the relay,
which is equivalent to a state with no v
oltage at any of the AUX1 ÷ AUX4 outputs.
TAMPER
– output indicating enclosure opening
:
-
volt free contact input indicating the status of the
power supply doors, PSU closed: contacts closed (NC), PSU open: contacts open (NO).
4. Service and operation.
4.1. Overload or short-circuit of the power supply output.
The AUX1÷AUX4 outputs of the PSU are protected against short-circuit and overload by
melting fuse
inserts or PTC polymer fuses. (The Fx / PTCx jumper position determines which fuse is used). If the power supply
load current exceeds Imax. (110% ÷ 150% @ 25°C of the PSU power), the output voltage is automatically
disconnected, which is indicated by turning off the Lx LED.
If the PTC polymer fuses are used, disconnect the load from the power supply output for approximately 1
minute to restore output voltage. (the time needed to cool down the PTC fuse). In case of melting fuse activation, it
should be replaced with a fuse of the same type and of the same rated current.
4.2. Battery operation
In case of mains power loss, the unit will instantly switch to battery operation.
The power supply is equipped with a discharged battery disconnection system. If
the battery voltage has dropped below 38V during the battery operation, the battery will be
disconnected.
4.3. 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. The battery status should be checked periodically. (battery capacity
loss, too high internal resistance) batteries should be replaced. In case of fuse replacement, use only compatible
replacement parts.
