www.pulsar.pl EN54C-LCD
RED POWER plus
8
3.2.
Block diagram.
The power supplies has been manufactured based on a high-efficiency system of AC/DC converter.
Applied microprocessor circuit is responsible for the full diagnostics of the PSU parameters and batteries.
The figure below shows a flowchart of the power supply, along with selected functional blocks which are essential
for the proper functioning of the unit.
Fig. 1. PSU block diagram.
3.3.
Description of components and power supply terminals.
Table 1. Elements of PSU (Fig. 2).
Compone
nt No.
Description
230 V supply connector with a terminal for connection of a protective conductor
Terminals:
TEMP
– input of the battery temperature sensor
TAMPER
– input of the microswitch tamper
Closed input = no indication
Open input = alarm
ALARM
– technical output of collective failure of the PSU - relay type
EPS
– technical output of AC power failure indication
open
= AC power failure
closed = AC power - O.K.
EXTi
– external failure input
closed input
= no indication
open input = alarm
+BAT-
–
terminals for connecting the battery
+AUX1-
– AUX1 power output ( - AUX=GND)
+AUX2-
– AUX2 power output ( - AUX=GND)
CAUTION!
In Fig. 2 the set of contacts shows a potential-free status of the relay, which corresponds to power
supply failure.