PSBS3024C
BLUE POWER
9
AC OK:
on
– The PSU supplied with 230V AC voltage
off
– no 230V AC mains supply
DC OK:
on
– DC voltage at the AUX output
off - no DC voltage at the AUX output
BAT OK:
on – battery voltage U
BAT
> 23V
off – battery voltage U
BAT
< 23V
3.
Power supply operation indication
.
3.1 Optical indication.
The PSU is fitted with 3 LED lights at the front panel
:
Additionally, the PSU is fitted with 3 LED lights indicating the operating status: AC, LB and AUX at the PCB
of the PSU:
AC- red LED
: is permanently illuminated during normal operation (AC power ON). No AC power is
indicated by turning off the LED.
LB- yellow LED
: indicates battery charging. The light intensity depends on the charging current.
AUX
-
green LED:
indicates DC power status at the PSU output. During normal operation, it is permanently
illuminated. In case of short-circuit or output overload the LED is off
3.2 Technical outputs.
The PSU has three indication outputs:
EPS - technical output indicating 230V AC power failure
.
The output indicates 230V AC power failure. Under normal status
– with the 230V 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 PSU failure
.
The output indicates PSU failure. 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 unit does not feature a battery detection function. In the case of no battery or non battery
connected, the output is in the normal mode.
The power supply technical outputs are open collector (OC) type, as shown schematically below.
Fig. 5. Electrical diagram of the OC technical outputs.
