Festo Контроллеры двигателя CMMS-ST - Manual (Page 48)

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 ... SE/ SEB 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 ... SB/ SEB 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.