Powertronix Quasar Service Manual page 109

Service Manual
Link and Jumper functions
3.
Potentiometer adjustment
4.
5.
3x3 UPS
Issue 2 - November 2001
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
c) J6 J7 J8 define the overload level related to the UPS ratings
Link
J6
J7
J8
d) J9 J10 J12 defines the inverter peak current limit for the appropriate UPS output rating.
Link
J9
J10
J12
e) J11 define the converter peak current limit. (normally closed for all UPS output ratings).
Carry out the Inverter and Converter functional test outlined on page 7-15.
It is unlikely that any potentiometer adjustment will be required on a replacement PCB
however the function is listed below.
a) P1 = adjust the inverter output voltage.
b) P2 = adjust the converter DC voltage.
c) P3 = adjust the UPS output threshold at ± 15%.
Refit all covers removed and return the UPS to its normal operating condition.
PCB Replacement Procedures
Close
On Line
Freq. Tolerance 1%
50Hz
J4
close
open
close
open
10K 20K
open close
close open
close close
10K 20K
open close
open open
open open
Open
Off line
Freq. Tolerance 4%
60Hz
J5
close
close
open
open
30K
open
close
open
30K
open
close
open
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