3-46 Installing the Drive
DC590+ Series DC Digital Drive
AH466701U001, U002, U003 (Frames 4 & 5)
590+ 4 Quad and 591+ 2 Quad;
Low, Medium 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 +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- 22
590+/591+ Power Board
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