Driver Interface Pcb Cs007I; Bypass Voltage Threshold Adjustment; Link And Jumper Functions - Powertronix Quasar Service Manual

Service Manual
5.3 -

Driver Interface PCB CS007I

The principle circuit functions of the driver interface PCB are:

5.3.1 - Bypass Voltage Threshold Adjustment

5.3.2 - Link and Jumper functions

3x3 UPS Functional description
Issue 2 - November 2001
a) Inverter and converter IGBT gate drives (connectors JI I J9 J12 for the inverter, J14 for
the converter)
b) Static bypass thyristors and inverter gate drives (connectors J3 J4 J5 for the inverter, JI
J2 J5 J6 for the static bypass)
c) Input thyristor driver (J16)
d) Converter DC feedback (+DC, DC)
e) Inverter feedback
f) Bypass supply circuit and bypass threshold (P1 and P2)
g) DC Bus unbalanced sensing (SI reset).
a) P1 = adjusts the maximum bypass voltage threshold (+10%)
b) P2 = adjusts the minimum bypass voltage threshold ( 10%)
a) J4A J5A sets the DC Bus voltage.
375V
750V (normal operation.)
b) JIA J2A J3A sets the UPS nominal bypass voltage;
DC V/Link
(
service maintenance mode
Link 380V
J1A close
J2A open
J3A open
Chapter 5 - Functional description
Driver Interface PCB CS007I
J4A
)
close
open
400V
open
close
open
J5A
close
open
415V
open
open
close
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