Polarity test

Note

Protection of the linear servomotor

Before the test, make sure that the linear motor system has suitable electrical and mechanical protection.

Ensure that the count direction of the feedback matches the traversing direction of the motor. If this is the case, the motor is connected correctly. If this is not the case, two phases (phases 1 and 3) of the motor cable can be swapped, in order to correct the traversing direction.

All linear servomotors from Beckhoff are wired and connected in exactly the same way, so that a single test is sufficient in order to determine the polarity of a motor/graduated rule combination. If more than one axis is being constructed in a similar way, the polarity will be identical.