General connection examples

WARNING

Risk of injury through electric shock and damage to the device!

Bring the Bus Terminal system into a safe, de-energized state before starting mounting, disassembly or wiring of the Bus Terminals.

Note

Connect the motor strands correctly!

Connect the windings of a motor strand only to the terminal points of the same output driver of the stepper motor terminal, e.g.:

  • one motor strand to terminal points A1 and A2,
  • the other motor strand to terminal points B1 and B2.
  • Connecting a motor strand to the terminal points of different output drivers (e.g. to A1 and B1) can lead to destruction of the output drivers of stepper motor terminal!

Note

Use a brake chopper terminal (EL9576) for short deceleration ramps!

Very short deceleration ramps may lead to temporarily increased feedback. In this case the terminal would report an error. In order to avoid this, a brake chopper terminal (EL9576) should be connected in parallel to the power supply for the motor so that any energy being fed back is absorbed.

Note

Fuse protection of the supply voltage

The electrical protection of the load voltage must be selected in such a way that the maximum flowing current is limited to 3 times the rated current (max. 1 second)!

Connection types

The EL7047 Stepper Motor terminal has bipolar output stages and can control bipolar and unipolar motors.

Bipolar motors

General connection examples 1:
Bipolar control (serial) of a bipolar motor
General connection examples 2:
Bipolar control (parallel) of a bipolar motor
General connection examples 3:

Documentation for stepper motors from Beckhoff

These two examples show the connection of the bipolar Beckhoff motors AS1010, AS1020, AS1030, AS1050 or AS1060. Further information on stepper motors from Beckhoff can be found in the associated documentation available for download from our website at http://www.beckhoff.com.

Unipolar motors

Bipolar control of a unipolar motor

General connection examples 4:
Bipolar control with only one half of each winding is controlled

Encoder

Connecting an encoder (24 V)

General connection examples 5:
The encoder is supplied from the power contacts via terminal points 3 (+24 V) and 7 (0 V).