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R812P
RACK POWER
7
3.2. Technical output.
The power supply is fitted with the ALARM output of collective failure (relay type). A collective failure can
be triggered by the following events:
- 230V AC mains power failure
- polymer fuses PTC activation
- Failure of the switch mode power supply
-Too high temperature of the switch mode power supply (>70°C)
Fig. 4. Electrical diagram of the ALARM collective output of failure.
CAUTION! In Fig.4 the set of contacts shows a potential-free status of the relay, which
corresponds to power supply failure.
3.3. Acoustic indication.
A collective failure is indicated by the piezoelectric indicator, 1 beep every second. The acoustic indication
can be turned off by changing the ON / OFF position of the switch .
switch in the up position, indication ON
switch in the down position, indication OFF
4. Operation and use.
4.1. Overload or short circuit of the PSU output.
The AUX1 ÷ AUX8 power supply outputs are protected against by polymer fuses PTC 1,5A. In the case of
fuse activation, it should cut off the load from the PSU output for approx. 1 minute.
4.2. Maintenance.
Any and all maintenance operations may be performed following the disconnection of the PSU from the
power supply network. The PSU does not require performing any specific maintenance measures. In case of fuse
replacement, use a replacement of the same parameters.