www.pulsar.pl POE084824B
GREEN POWER CCTV PoE
8
- L
FPS
red LED (Fig. 2, component 10) is not illuminated during normal operation (no failure). In case of activation of
the short circuit / overload protection at any output, the LED is permanently illuminated.
- L1 ÷ L8 green LEDs (Fig. 2, component 5) indicate voltage at the individual outputs of the module (L1 for AUX 1
etc.). Activation of the short circuit / overload protection of a given circuit is indicated by turning off one of the Lx
LEDs.
3.1. 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. 5. Electrical diagram of the OC output.
- relay output. In case of failure, relay contacts are switched automatically.
Fig. 6. Electrical diagram of the relay output
CAUTION! The arrangement of contacts at the figure 6 shows a potential-free status of the relay,
which is equivalent to a state with no voltage at any of the AUX1 ÷ AUX8 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÷ AUX8 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 t he PSU power), the output voltage is automatically
disconnected, which is indicated by turning off the green 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.
