Chapter 5 - Functional Description; Control Logic Pcb Cs0072; Potentiometer Adjustment; Link And Jumper Functions - Powertronix Quasar Service Manual

Chapter 5 - Functional description

This chapter describes the principal PCB `s fitted to the UPS, there function, and configuration of the
potentiometers, test points and jumpers.
Abbreviations
The following abbreviations are used throughout.
5.1 -

Control Logic PCB CS0072

The Control logic PCB integrates all the UPS'S functions, converter, inverter, static bypass. The control
is accomplished with programmable logic IC's fitted to the PCB. Their use significantly reduces the dis
crete components required, thus keeping any faults or problems to a minimum.
The principal circuit functions of the control logic are:

5.1.1 - Potentiometer adjustment

5.1.2 - Link and Jumper functions

3x3 UPS Functional description
Issue 2 - November 2001
P = potentiometer
TP = test point
JP = Jumper
a) Feedback circuits (inverter voltage, converter voltage, static bypass voltage, inverter
output current).
b) Peak limit current detector circuits (inverter current and converter current).
c) Control logic power supply detector.
d) Overload detector.
e) UPS status and alarms generated by the UPS's PCB's.
a) P1 = adjust the inverter output voltage.
b) P2 = adjust the converter DC voltage.
P3 = adjust the UPS output threshold at ± 15%.
c)
a) J1 J2 J3 define the UPS characteristics.
Link
J1
J2
J3
b) J4 J5 define the parameters of the inverter output voltage and DC Bus voltage.
Output V/Link
Service
380
400
415
Close
On Line
Freq. Tolerance 1%
50Hz
J4
close
open
close
open
Open
Off line
Freq. Tolerance 4%
60Hz
J5
close
close
open
open
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