3-28 Installing the Drive 590 Series DC Digital Drive
Power Board Circuit Descriptions
590/591 (AH385851U002, U003, U004, U005)
All chassis sizes 35A to 270A
(2 Quad and 4 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 ±15V dc rails are generated via separate secondary
windings which are rectified, smoothed and stabilised by linear
regulators.
The SMPS operates over an input voltage range of 110V to
240V ac ±10%, 50/60Hz.
The auxiliary supply fuse FS1 provides protection of the high
voltage elements.
Figure 3- 6 591 Power Board 2 Quad
(AH385851U003, U004)
F8
F16
GK
GK
F19
F18
D1 D2
D3 D4
+24V
0V
RFI
GND
F25
F23
F24
F21
FS1
F22
F27
D5 D6
D7 D8
TRANSFORMER
PTR
PTY
(F14)
(F13)
(F17)
(TH1) (TH4) (TH3) (TH6) (TH5) (TH2)
F15
F9
FS2
FS3
FS4
A-A+
EX A-
EX A+
PLN
PLM
PLL
PLK
PLJ
(F+)
(F-)
A+
A-
L1 L2 L3
F26
F28
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