Dr300 Options; The Shunt500 Regulator Board; Figure 1-3. Shunt500 Wiring - Aerotech DR300 Operation & Technical Manual

DR300 Operation and Technical Manual
1.2.

DR300 Options

A variety of options may be purchased with the DR300 drive chassis to enhance its
standard operation. The following sections discuss the available options.

1.2.1. The SHUNT500 Regulator Board

The SHUNT500 regulator board provides shunt regulated bus voltage. Figure 1-3 shows
the interconnections of the SHUNT500 regulator board.
UNIDEX 500
Shunt Regulator Board
690C1488
EFN169
P2
12 OHM, 95 W
Figure 1-3.
The SHUNT500 board, shown in Figure 1-5, is an integral option to the DR300 used to
regulate either one of the bus power supplies (Both if Supplies are connected together).
Typically, the SHUNT500 board is required for motors operating from a 160 VDC bus
with large inertial loads, which on deceleration return the energy back into the power
supply, possibly damaging the drive module. The SHUNT500 board prevents the power
from pumping up the bus supplies by dissipating the excess energy into a 95 watt resistive
load.
The SHUNT500 board has an adjustable voltage set point and fusing. The set point for
the regulator is factory set and should not require user adjustment. However, it may be
necessary to change the fuse for the regulator circuit. This is accessible by removing the
top cover to access the fuse. The mounting location for the SHUNT500 board is shown
in Figure 1-4.
Version 1.5
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BW6
Bus #1
BW4
P1
P4
BW9
Bus #2
BW7
P3
SHUNT500 Wiring
Aerotech, Inc.
DR300
Drive Interface Board
690D1557
EFN01012
Introduction
1-3