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PSBEN5024C/LCD
6
2.3 Description of PSU’s components and connectors.
Table 1. Elements of the PSU pcb (see Fig. 2).
Element no.
Description
[1]
PANEL – optical indication connector
[2]
P
BAT
– jumper; idle in this model
T
AC
– jumpers J1, J2; idle in this model
CAUTION. In this model, jumpers are operated from the LCD desktop’s level (see: chapter 3.4.2).
[3]
I
BAT
– battery charging current selection
J1=
, J2=
, J3=
I
BAT
=0,6 A
J1=
, J2=
J3=
I
BAT
=1,5 A
J1=
, J2=
J3=
I
BAT
=2,2 A
J1=
, J2=
J3=
I
BAT
=3,0 A
Caption:
jumper on,
jumper off
[4]
START – button (launching the PSU from a battery)
STOP – button (disconnection of the PSU during battery-assisted operation)
[5]
– pin; activation of acoustic indication
- indication on
- indication off
Caption:
jumper on,
jumper off
[6]
V
ADJ
– potentiometer, DC voltage adjustment
[7]
BUZZER – acoustic indicator
[8]
F
BAT
– fuse in the battery circuit
[9]
Connectors:
~AC~ – AC power input
+BAT – DC power battery output
+AUX – DC power output (+AUX= +U, -AUX=GND)
EPS FLT – technical output of AC network absence indication
open
= AC power failure
close
= AC power - O.K.
PSU FLT – technical output of PSU failure
open
= failure
close
= PSU working correctly - O.K.
APS FLT – technical output of battery failure
open
= battery failure
close
= battery O.K.
EXT IN – output of collective failure
[10]
V
EXT
pin – polarisation of EXT IN circuit
[11]
Communication connector
[12]
LEDs – optical indication:
AC
– presence of the AC power
AUX
– DC output voltage
OVL
– PSU overload
PSU
– PSU failure
APS
– battery failure
EXT
– EXT IN output’s status
LB
– battery charge
[13]
OVP
– optical indication for activating the over voltage system