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3. Product description
48
Festo.P.BE-CMMS-ST-G2-HW-EN
1008NH
3.4.5
MTR-ST series stepper motors
The MTR-ST series stepper motors are two-phase hybrid stepper motors. They are
designed for controlled operation (open-loop).
3.4.6
EMMS-ST series stepper motors
The EMMS ST ... S
E
/ S
E
B is equipped with an encoder (500 lines/R), which is used for
current, speed and position control. Commutation of the motor is also controlled with the
encoder.
Step loss is avoided by building up a drag interval in case of overload and monitoring
takes place up to a maximum set amount.
In combination with the controller CMMS ST, 'Servo Light' operation is made possible
(closed loop).
The EMMS ST ... S
B
/ SE
B
possesses an integrated holding brake.
3.5
Function overview
3.5.1
Operating modes
-
Setpoint specification via increment generator signals, suitable for frequencies up to
150 kHz
-
Analogue speed specification with 12-bit resolution
-
Move to reference point
-
Simple connection via digital I/Os to a higher-order control system, e.g. a PLC.
-
Jolt-limited or time-optimised positioning absolutely or relative to a reference point via
the integrated trajectory generator.
-
Position specification via the integrated fieldbus CANopen with automatic
interpolation between the setpoints.