Rev B Jan 2020
Page 1
Chapter 1 Overview
Chapter 1 Overview
1.1 Description
These motor actuators offer 1" (25 mm) and 2” (50 mm) of travel, and when used with one of our stepper motor controllers, such
as the BSC201, can achieve a default maximum speed of 50 mm/s. They
provide sufficient torque for large loads up to 180 N.
The hybrid stepper motor, with its rotor consisting of 50 individual magnetic teeth, is ideally suited for micro-stepping
applications. Aside from the obvious increase in resolution resulting from increasing the steps per revolution from 200 to
409,600, micro-stepping also ensures smoother low-speed motion by allowing the discrete 1.8º step size, which produces
mechanical noise, to be reduced to much smaller steps with inherently lower resultant vibrational noise, achieving a theoretical
minimum step size of 2.4 X 10
-6
mm.
The Stepper Motor drive has been equipped with a trapezoidal screw thread for more efficient, high load operation than is
available from a standard threading.
The actuators are compatible with our 2" LNR50M and LNR50DD manual stages. To use the actuator with these stages,
remove the existing manual drive and mount the motor to the side of the stage using two M4 x 40 cap screws (included) - see
Section 3.2.
The knob on the rear shaft of the motor is an inertial damper. When the actuator is powered down, It can also be used to
position the actuator manually.
Note
Manually adjusting the actuator will cause the position to no longer be synchronized to the position display in the control
software - this can lead to overrunning travel limits unexpectedly. If the actuator is powered down and moved by hand, ensure
that it is homed immediately after power up.
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