www.pulsar.pl
BNC08128C
G
REEN POWER CCTV BNC
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.
Figure 6. Electrical diagram of the OC output.
- relay output. In case of failure, relay contacts are switched automatically.
Figure 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 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 by
melting fuse inserts or PTC
fuses. In case of melting fuse replacement, use only compatible replacement parts. If the PTC polymer fuses are
used, then automatic disconnection of the output voltage, indicated by switching off the green LED, takes place. In
such case, disconnect the load from the power supply output for approximately 1 minute.
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 voltage at the battery terminals has dropped below 9.5 V during battery operation, the
batteries will be disconnected.
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.
