Design Guidelines
Transport System Design
MagneMover LITE User Manual 99
Rockwell Automation Publication MMI-UM002F-EN-P - October 2022
Physical Length
The physical length of the high flux magnet arrays can be measured using a non-ferrous mea-
suring tool. The physical length can also be calculated, if the number of cycles is known.
The equation to calculate the physical length of a high flux magnet array is:
MagnetArrayLength = (Cycles x 54.5) + 7.7 mm
Where:
MagnetArrayLength – The length of the array, in millimeters.
Cycles – The number of cycles in the array (all MM LITE arrays are 1 cycle).
7.7 mm is the additional length of the cover.
Magnet Array Length and Attractive Force
There is no magnetic attractive force present between the magnet array and the MagneMover
LITE motor.
Magnet array length is measured in three ways:
• Number of cycles.
• Physical length in millimeters.
• Number of poles.
Number of Cycles
The amount of thrust is reported as force per magnet array cycle. The more cycles in the mag-
net array, the greater the thrust force. All MagneMover LITE magnet arrays are one cycle long
and have a cycle length of 54.5 mm as shown in Figure 3-23. A magnet array cycle is:
• The distance from the edge of a half North oriented magnet to the opposite edge of a
half North oriented magnet as shown in Figure 3-23.
• With a 1 cycle G3 magnet array, the maximum Motor Gap is 1.0 mm.
With a 1 cycle G4.2 and later magnet array, the maximum Motor Gap is 1.5 mm.
• Two magnet arrays can be used in a dual array configuration to increase the thrust
available (see Dual Array (Tandem) Glide Puck on page 107).
Number of Poles
The number of poles in a magnet array is simply the number of North and South-oriented
poles in the magnet array. The number of poles is always an odd number (see Figure 3-23) as
it includes the half magnets at each end of the array. The number of poles can also be calcu-
lated from the number of cycles (poles = cycles * 2 + 1).
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