EL7041 -General connection examples
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Risk of injury through electric shock and damage to the device! Bring the Bus Terminals system into a safe, de-energized state before starting mounting, disassembly or wiring of the Bus Terminals. |
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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.
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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)! |
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Use a buffer capacitor terminal (EL9570) for short deceleration ramps. Very short deceleration ramps may lead to temporarily increased feedback. In this case the terminal would report an error. To prevent this, one should connect a buffer capacitor terminal (EL9570) with a suitable ballast resistance (e.g. 10 Ohm) in parallel with the power supply of the motor in order to absorb energy being fed back. |
Connection types
The EL7041 Stepper Motor terminal has bipolar output stages and can control bipolar and unipolar motors.
Bipolar motors
 | 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.de/. |
Unipolar motors
Bipolar control of a unipolar motor
Only one half of each winding is controlled.
Encoder
Connecting an encoder (24 V)
The encoder is supplied from the power contacts via terminal points 3 (+24 V) and 7 (0 V).