
Operation
Controls and Indicators
MagneMover LITE User Manual
13
Rockwell Automation Publication MMI-UM002E-EN-P - March 2016
E-Stops
When using an NC-12 Node Controller, the Node Controller’s Digital I/O can be connected
directly to an E-Stop circuit. An E-Stop is a user-supplied button (typically locking) that can
be pressed by an operator if an emergency situation arises to halt all motion on the specified
Paths. When the Node Controller detects that the E-Stop button is activated, it commands all
Paths associated with that E-Stop to suspend vehicle (puck) movement. All motors on those
Paths suspend vehicle target requests and permissions and all vehicles come to a controlled
stop and are held in position by the motors. Stopping time for each vehicle is dependent on the
vehicle’s load and the acceleration setting of the vehicle’s current movement command.
Multiple E-Stop circuits may be connected to a single NC-12 Node Controller. Each Path can
then be configured to be associated with a specific E-Stop bit. Any or all Paths may be associ-
ated with the same E-Stop bit. Refer to the
MagneMover
®
LITE Configurator User’s Manual
to configure the MagneMover LITE transport system to use an E-Stop.
NOTE:
An external power supply for the E-Stop circuit must be provided by the user.
A single E-Stop circuit may have multiple buttons wired together in series as shown in
so that pressing any button will initiate an E-Stop. The same E-Stop circuit may be
used for multiple Paths on different Node Controllers by wiring the E-Stop circuit to each
Node Controller in series as shown in
to a maximum of eight Node Controllers and
referencing the appropriate Digital Input Bit on each Path. The E-Stop is cleared by releasing
the button that was pressed and issuing a Resume command.
NOTE:
Motion will not resume until the button is released and the Host Controller issues a
Resume command to the Paths associated with the E-Stop.
CAUTION
Electrical Hazard
The E-Stop only executes the actions described, it is not the
same as an EMO (Emergency Off), which removes power to
the transport system.
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