Design Guidelines
Transport System Design
66
MagneMotion
Rockwell Automation Publication MMI-UM007F-EN-P - September 2020
•
The magnetic attractive force between the magnet array and the QuickStick HT motors
is constant (assuming the Vehicle Gap is maintained) regardless of the power that is
applied to the motors (see
).
•
The Vehicle Gap (distance between magnet array and motor, see
) must be
maintained throughout the system.
•
Keep the Downstream Gap (distance between motors, see
) as small as pos-
sible to make sure that there is enough thrust to move the vehicle over the gap.
•
Do not locate process stations such that the center of the magnet array would be within
the Downstream Gap between motors as settling time and repeatability can be nega-
tively affected.
•
Make sure that the track system configuration accounts for power and communication
connections and all cables.
•
Make sure that the track system configuration accounts for points for grounding the
track to earth ground in the facility and for grounding of all motors.
•
When choosing the materials for the vehicle and guideway, consider the stresses
applied to the vehicle and guideway during use.
•
When choosing the materials for the vehicle and guideway, consider those materials
that provide low friction and low wear.
•
When choosing the materials for the vehicle and guideway, consider static electricity
dissipation between the vehicles and the guideway.
•
The vehicle (magnet array) must remain centered over the motors throughout the sys-
tem.
•
When choosing the materials for the wheels, consider the life expectancy of the wheel
material and the noise level as they move on the guideway. Noise can be created when
moving across the joints in a straight/curved guideway or into a switch.
•
Off-centered and/or large payloads can affect system performance.
Motors
The QuickStick HT motors can be mounted in any orientation: right side up, sideways, upside
down, and vertically. QSHT motors have a required direction, with an upstream end and a
downstream end (see
for identification). The Quick-
Stick HT motors must always be installed with the upstream end of one motor following the
downstream end of the previous motor. Forward vehicle motion for the QuickStick HT motors
is from upstream to downstream, however vehicles can move backwards (downstream to
upstream) if necessary.
NOTE:
If the motor is mounted on an incline or vertically, the motor does not hold a vehicle
in place during startup, restarts, or if power is lost.