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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
; pin - adjustment of battery protection function UVP
•
P
BAT
= battery protection (disconnection) off
•
P
BAT
= battery protection (disconnection) on
T
AC
; pins J1, J2 - adjustable time lag of AC power failure indication
•
J1= , J2= time lag T= 5s
•
J1= , J2= time lag T= 140s
•
J1= , J2= time lag T= 17m
•
J1= , J2= time lag T= 2h 20m
Caption: jumper on, jumper off
[3]
I
BAT
– pin - 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
=2,2A
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 the acoustic indication
- indication on
- indication off Caption: jumper on, jumper off
[6] V
ADJ
– potentiometer, DC voltage adjustment
[7] BUZER – 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