Beckhoff EL7031 - Page 67

Mounting and wiring
EL70x1 67Version: 4.4
Unipolar motors
Bipolar control of a unipolar motor
Fig.44: Bipolar control of a unipolar motor
Only one half of each winding is controlled.
Encoder
Connecting an encoder (24V)
Fig.45: Connecting an encoder (24V)
The encoder is supplied from the power contacts via terminal points 3 (+24V) and 7 (0V).