Rockwell-automation 1395 Digital DC Drive User Manual Page 22

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Publication 2361-5.01 July 1998
1-10 Product Overview
Feedback Board
The feedback board receives status information from the drive
components, scales it to a signal level, and supplies it to the main
control board (through the power stage interface board).
Figure 1.7
Feedback Board
The feedback board has terminals for the 3-phase AC inputs (A, B,
and C) and for the armature power (VA+ and VA-), a series of jumper
connections to adjust for AC input voltage, jumper connections for
the field current, a bus connection to the power stage interface board,
two terminals blocks for placing burden resistors in parallel to the
circuit, and a Phoenix connection terminal block connected to other
drive components.
Note: Jumper settings are defined in the installation chapter of
this manual.
24V DC Power Supply
There are three 24V DC power supply units that may be installed in
the drive. There is a feedback board supply, an optional air flow
sensor supply, and an optional control board supply (used to power an
optional adapter board). These supply units are fed from the 115V
AC control power circuit.
576VAC
TO
690VAC
301VAC
TO
575VAC
150 VAC
TO
300 VAC
150 VAC
TO
300 VAC
301VAC
TO
575VAC
576VAC
TO
690VAC
150 VAC
TO
300 VAC
J40
576VAC
TO
690VAC
150 VAC
TO
300 VAC
301VAC
TO
575VAC
576VAC
TO
690VAC
301VAC
TO
575VAC
150 VAC
TO
300 VAC
TB2 TB3
FEEDBACK BURDEN RESISTOR FEEDBACK BURDEN RESISTOR ARMATURE
AB
C
VA+
TB1
(1) (2) (3) (4)
301VAC
TO
575VAC
576VAC
TO
690VAC
VA-
To Power Stage
Interface Board
Not Used
Jumper Connection
(Field Current)
Jumper Connections
(AC Input Voltage)
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