Start-up
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Connection the electrical connections (power cable, signal
cable) to the controller.
Check that the rotor can be turned freely. In doing so, pay
attention to any grinding noise.
Check that all required contact protection measures were
taken for moving and live parts.
1. Switch on the controller and start the commissioning software
MC demo.
2. Select the communication interface, establish communication
with the module and configure the converter.
3. Check the encoder signal and the signal of the temperature
sensor.
4. Control the STM and optimize the parameters.
5. Check the bearing noise at regular intervals.
Note
If the unit is referenced via the encoder's zero pulse, free motion
must be ensured within the range of ± 360°.
If the STM is used in a multiple axis system, it is recommended to
put the axes into operation individually.
To avoid collisions, prior to the first movement, check the align-
ment of the STM, the set direction of counting of the measuring
system and the motor's direction of rotation.
Note
In the MCS12 controllers, the stepper mode is used for commuta-
tion. So after turning on, all three phases are energized.
This aligns the magnetic field of the rotor to the stator's magnetic
field.
As a result, the drive moves abruptly by a few degrees.
The resulting change in position is measured by the sensor and
stored as an offset in the memory of the controller.To increase
the accuracy of this offset, the energization of the phases is
carried out several times in a row.
After switching on the controller , the motor can move jerkily in a
range of +/- 30°.
This stepping mode is used for incremental measuring systems
after each restart of the controller.
Starting up
the STM with any
controller
