Installing the Drive 3-39
DC590+ Series DC Digital Drive
AH470330 (Frame 2)
(2 Quad and 4 Quad)
Power supplies for the controller are generated
from the single phase auxiliary supply via a
Switched Mode Power Supply. The incoming
supply is directly rectified to provide a high
voltage dc power rail. A high voltage transistor
switches this rail on to the primary of a high
frequency transformer, the output of which is
rectified and smoothed to provide the dc power
supply rails. The +15V dc rail is monitored via a
reference element and a control signal returned via
an opto-isolator to the control element of the high
voltage switching transistor. The other dc rails
(-15V & +24V dc) are generated via separate
secondary windings which are rectified and
smoothed, with a separate SMPS element
providing a regulated +5V dc rail. The SMPS
operates over an input voltage range of 110V to
240V ac 10%, 50/60Hz.
Figure 3- 16 590+ Power Board
4 Quad (AH470330)
CONN 29
T5T2T3T6T1T4
T8T11T12T9T10T7
test points
TB 13
CONN 30 (heatsink thermistor))
CONN 47 (fan)
CONN 46 (fan)
transformer
SMPS
CONN 16
CONN 27
FS6
FS5
FS3
(to control board)
3 phase and
main contactor
coil
field fuses
aux.
fuse
transforme
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