Rockwell Automation MV SMC Flex Motor Controller (for Series K or later) User Manual
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Rockwell Automation Publication 1560E-UM051F-EN-P - June 2013
Chapter 1
Product Overview
Bulletin 1560E • Basic Control – With Controlled Stop
, the controller operates much the same as
described above for the Standard module. The control signal uses terminal 16
instead of 17, and a “coast” stop can be achieved by opening the connection to
terminal 17.
It is more important in this configuration to integrate the control circuit of the
1560E with the existing controller, for better control of the Stop option. The
“start signal” for this scheme cannot be a slave of the main contactor, since it must
remain closed to accomplish the option stop maneuver. The SMC Flex module
can be used to control the main contactor such that it will close when a start is
initiated, and remain closed until it has sensed the motor has stopped following
an option stop maneuver.
Bulletin 1560E • DPI Control – Controlled Start only
allows the MV SMC Flex to be
controlled using DPI. (Refer to
for Logic Command Word
bits assignment for DPI control.) This special usage of DPI includes provisions
for a “Local” mode of control as well.
With the Local-Off-Remote selector switch in the “Remote” position, and
closure of the existing starter main contactor, terminal 18 is energized, allowing a
start command to be executed via DPI. When a “Start” is executed, the “Aux #4”
contact closes, which serves as an interlock with the main contactor (or breaker)
in the existing starter.
As with the other control schemes, the SMC Flex module closes “Aux #1”,
energizing “B-IV”, as the motor approaches rated speed.
Local control is enabled with the selector switch in the “Local” position. Closure
of the “Start” relay, from the existing starter, allows the unit to initiate motor soft
starting.
A stop command can be generated via DPI or by opening “CR”, depending on the
control mode.
If possible, it is better to have the SMC Flex module control the main contactor
directly. In this case, the control circuit would look like, and function like, the
descriptions above for the Bulletin 1562E.