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The linear stepper motor requires a full step or microstepping driver with power supply that is rated with sufficient current and voltage to meet the motion requirements. With full stepping, the forcer will move .010" [.25 mm] for each step. With microstepping the forcer will divide the fullstep by the number of microsteps. With 256 microsteps / full step, the microstep will be .010" [.25 mm] / 256 = 0.00004" [1 micron]
The linear stepper motor is a precision device and should not be mounted in an environment that is wet or excessively dirty. Debris should not be allowed to accumulate on the platen.
The platen should be mounted to a flat (better than .003"/ ft [246 microns / m]) and stiff surface. Threaded holes on the bottom of the platen are present for mounting to the customers system. The forcer has threaded holes on the top surface for attaching the payload. The linear stepper motor may be mounted in any orientation. When mounting the platen with the forcer moving vertical, it should be noted that the forcer will be required to generate additional force due to gravity and that the ball bearing forcer will slide down to the bottom when power fails. Turning off the air to an air bearing forcer will lock the forcer in place.
Setting The Air Gap On Single Axis Linear Stepper with Roller Bearing:
The forcer air gap should be set to .0015-.002 inches [38 – 50 microns]. If the air gap is properly set, the stepper motor should be able to move freely along the entire length of the platen. If the forcer becomes difficult to move manually or it physically makes contact with the platen, the air gap will need to be reset. Instructions on how to properly set the motor airgap can be downloaded below: