Standard and Optional Equipment
13-13
590+ Series DC Digital Converter
AH466001U001, U101 (Frame H)
(590+ - 4 Quad and 591+ - 2 Quad; Low and High Volt)
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 5V 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 individual linear regulators providing ±15V dc rail. The SMPS operates over an
input voltage range of 110V to 240V ac
r
10%, 50/60Hz.
Power Board
Field Board
Swing-frame
TB9
TB6
TB8
PL6
PL5
PL3
PL11
PL12
PL13
SMPS
transformer
PL1
ACCTS
PL2
calibration
switches
SW1
PL4
PL7
(to 4Q trigger boards)
(to field board)
(motor voltage feedback)
armature
voltage
feedback
coding supply,
phase rotation
and 3-phase present
auxiliary supply
and main contactor
(to 4Q trigger boards)
(to 2Q trigger boards)
to control
board
to control
board
fuse
microswitch
Power Board