Battery Charger Cs0074; Battery Charger Voltage Adjustment; Link And Jumper Functions - Powertronix Quasar Service Manual

Chapter 5 - Functional description

Battery Charger CS0074

5.4 - Battery Charger CS0074
The battery charger used in the UPS is a PWM controlled `Buck/Boost' DC DC converter which
produces a battery recharge float voltage of 230 Vdc.
The principals circuit components are:
The input mains voltage is rectified by the diode bridge PD1 and PD2, stepped down by the main power
components L1, D1, L2 with the voltage stabilised by the switching of IGBT Q2 the PWM gate drive signal
generated by U10. This configuration produces a stable battery recharging float voltage of 432 Vdc.

5.4.1 - Battery Charger Voltage Adjustment

5.4.2 - Link and Jumper Functions

Note: JP11 is always set closed.
5 - 4
a) Power section (PD1 2, LI, Q1, Dl, L2).
b) Supply section (+l5Vdc, 6.2 Vdc).
c) PWM generation and feedback section (U10 U3).
d) The battery test section (U4).
a) P1 = adjusts the float voltage level to 432 Vdc
b) P2 = adjusts the boost voltage level. This setting is dependant on the type of battery
fitted.
c) P3 = adjusts the float voltage when the temperature compensation option is enabled.
a) JPI JP2 sets the recharging current.
Link/Amper
b) JP3 enable/disables the boost charge.
c) JP4 enable/disables the temperature compensation circuit.
d) Jumpers JP5 to JPI0 set the capacity for the installed battery, this is used for the battery
test function.
Link
e) JP11 when selected open inhibits the battery test regime.
f) J4 J5 J6 set the automatic battery test interval
IA
e
JPI open
JP2 open
Link Boost Disable
JP3
Th Comp.
Link
Disable
JP4
JP10 JP9
2 x
7.2Ah
7.2Ah 7.2Ah
Link J4
Time 12 Hours
3x3 UPS Functional description
Service Manual
3A
open
close
Boost Enable
open close
Th. Comp.
Enable
open close
JP8 JP7 JP6
3 x 4 x
38Ah
7.2Ah
J5
24 Hours 48 Hours
Issue 2 - November 2001
5A
close
open
JP5
65Ah
J6