Rockwell Automation 1560E SMC Flex Smart Motor Controller - Manual (Page 39)

Product Overview 1-29
Bulletin 1562E • Basic Control – With Controlled Stop
When wired as shown in Figure 1.23, the controller operates in much the
same manner as in Figure 1.22.
Terminal 16 on the SMC-Flex module now controls the start and stop
maneuvers. Terminal 16 must remain energized for the module to run.
When the “Stop” button is pressed, and “CR” opens, the
SM C-Flex module
will initiate the option stop. An uncontrolled, or coast stop, is achieved by
opening the connection to terminal 17. This contact should remain open to
ensure all hold-in contacts clear, to prevent a re-start.
If the motor has started, the unit is in the bypass mode, and a trip occurs
within the SMC-Flex module or from an external protection relay; "AUX2"
will open the line contactor immediately, and "AUX1" will remain closed
for 10 seconds. A trip due to an overload or fault condition will result in a
“coast” stop.
Bulletin 1562E • DPI Control – Controlled Start only
The control scheme shown in Figure 1.24 allows the MV SMC-Flex to be
controlled using DPI (Drive Programming Interface). This special usage of
DPI includes provisions for a "Hand" mode of control as well.
With the Hand-Auto selector switch in the "Auto" position, terminal 18 of
the SMC-Flex module is energized, allowing a start command to be
executed via DPI. The "AUX2" contact closes, energizing both "M-IV"
and "MC".
When the motor approaches rated speed, the SMC-Flex module closes
"AUX1", energizing "B-IV", which closes the bypass contactor.
To run in "Hand" mode, the "CR" contact is used to initiate a start
sequence (similar to Figure 1.22).
A stop command can be generated via DPI or by opening "CR", depending
on the control mode.