User Manual

Rockwell Automation Publication 20P-UM001K-EN-P - July 2014 53
Installation and Wiring Chapter 1
Armature Voltage Feedback Connections
When a DC output contactor or inverting fault breaker or fuse is used with the
drive, the Armature Voltage Feedback terminals can be used to monitor the
armature voltage at the motor regardless of the state of the contactor or inverting
fault device. When this terminal block is not connected to the motor armature
terminals, the terminals must be jumpered (as described in the Tab l e 12
) and the
armature voltage feedback is monitored internally within the drive. In this case,
when a DC contactor is used with the drive, a speed feedback device is not used,
and the contactor opens, the drive will no longer receive the armature voltage
feedback signal.
Note that this terminal block is not present on drives shipped from the factory
prior to those with version 3.001 firmware installed. However, new pulse
transformer circuit boards shipped as replacement parts from the factory contain
this terminal block and can be used with any firmware version.
Table 12 - Armature Voltage Feedback Terminal Jumper Positions
Table 13 - Armature Voltage Feedback Circuit Wire Sizes and Terminal Specifications
IMPORTANT
By default, these terminals are jumpered - 1A1 to A1 and 1A2 to A2. If these
terminals are not wired to the motor terminals, the jumpers must be installed.
Terminals Description
1A1 Jumpered to A1 when internal armature voltage feedback is used.
Not used when A1 is connected to motor terminal A1.
A1 Voltage feedback from motor terminal A1.
1A2 Jumpered to A2 when internal armature voltage feedback is used.
Not used when A2 is connected to motor terminal A2.
A2 Voltage feedback from motor terminal A2.
Frame Terminals Wire Size and Type
(1)
(1) Wire with an insulation rating of 600V or greater is recommended. See Cable and Wiring
Recommendations on page 43
for cable spacing information.
Tightening Torque
N•m (lb•in)
A, B & C 1A1, A1, 1A2, A2 24…10 AWG/kcmils 0.5…0.6 (4.4…5.3)
D 22…8 AWG/kcmils 0.8…1.6 (7.1…14.2)