www.pulsar.pl MSRK1024
6
10. Connect the ~ 230V AC power to the transformer. The corresponding LEDs on the PCB of the power supply module
should be ON: red AC and green AUX LED.
The yellow LB LED should be ON during battery charging.
11. Check the output voltage (the PSU voltage
without load should amount to 27,2V÷ 27,8V, during battery
charging 22V÷ 27,6V). If the value of the voltage requires adjustment, it should be set by the V
ADJ
potentiometer,
monitoring the voltage at the AUX output of the PSU module.
12. Check the current consumption of the receivers, taking into account the battery charging current, so as not to
exceed the total current efficiency of the PSU (section 1.1).
13. Once the tests and control operation have been completed, close the enclosure/cabinet.
3. Operating status indication.
3.1 LED indication.
The PSU module is equipped with three diodes indicating operating status: AC, LB, AUX.
AC- red diode
: under normal status (AC supply) the diode is permanently illuminated. The absence of AC
supply is indicated by the AC diode going off.
LB - yellow diode
: indicates the battery charging process; the intensity of illumination is dependent on the
charging current.
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.
3.2. Technical outputs.
The PSU module is equipped with indication outputs:
EPS - technical output indicating AC power failure
.
The output indicates AC power failure. Under normal status
– with the AC 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 set by the T
AC
jumper.
PSU
– output indicating failure PSU module
.
The output indicates failure PSU module. Under normal status (correct operation) the output is shorted to
ground GND. If there is no DC voltage at the output (eg short circuit), the output is switched into hi-Z high
impedance state.
PSU failure can be caused by the following events:
- Short circuit at the output
- Output overload
- DC/DC voltage converter failure
- Under voltage protection activation
LoB
– output indicating low battery voltage.
The output indicates low battery voltage. Under normal status (U
BAT
> 23V) the output is shorted to ground
GND, when the battery voltage drops too low (U
BAT
< 23V) the output is switched into hi-Z high impedance
state.
The power supply technical outputs are open collector (OC) type, as shown schematically below.
Fig. 3. Electrical diagram of OC technical outputs.
