www.pulsar.pl
MSRK series
7
Green LED AC:
on
– the PSU is supplied with 230V AC,
off
– no 230 V power, battery-assisted operation
Green LED DC:
on
– presence of DC voltage in the output of the PSU
off
– no voltage in the output of the PSU
Red LED APS:
off
– no failure
on
– indicates battery failure status
3. Operating status indication.
The power supply unit features LED and acoustic status indication. PSU status can be remote-controlled by two
technical outputs.
3.1. Optical indication.
Additionally, the PSU is fitted with 3 LED lights indicating the operating status: AC, LB and AUX at the PCB of
the PSU:
AC - green led
: under normal status (AC supply) the diode is permanently illuminated. The absence of AC
supply is indicated by the AC diode going off.
LB - red led
: indicates the battery charging process
AUX - green diode:
indicates the DC supply status in the output of the PSU module. Under normal status, the
diode is permanently illuminated and in case of a short-circuit or overload, the diode goes off..
Moreover, signalling can be extended with optional PKAZ168 module:
3.2. Technical outputs.
The PSU is equipped with indication outputs:
EPS FLT - technical output indicating 230 V power failure
.
The output indicates 230 V power failure. Under normal status
– with the 230 V supply on, the output is shorted to ground
GND. In case of power failure, the PSU will switch the output into hi-Z high impedance state after a time about 30s.
APS FLT - output indicating battery failure.
The output indicates the PSU failure. The output indicates failure PSU module. Under normal status (correct
operation) the output is shorted to ground GND. If there is failure, the output is switched into hi-Z high impedance
state.
PSU failure can be caused by the following events:
- defective or low battery
- battery fuse failure
- no continuity in the battery circuit
- battery voltage below 11,5 V during battery-assisted operation
A battery failure is detected within a maximum of 5 minutes - after each battery test
After switching from battery operation to electrical network operation, battery failure indication
is inactive until full recharge battery, or for 24 hours after power returns.
The power supply technical outputs are open collector (OC) type, as shown schematically below.
Fig. 4. Electrical diagram of OC outputs.
