Important notes

DANGER

Serious risk of injury through electric shock!

• Only staff qualified and trained in electrical engineering are allowed to wire up the motor.
• Check the assignment of the servo drive and servomotor. Compare the rated voltage and the rated current of the devices.
• Always make sure that the motors are de-energized during assembly and wiring, i.e. no voltage may be switched on for any piece of equipment which is to be connected. Ensure that the control cabinet remains turned off (barrier, warning signs etc.). The individual voltages will only be turned on again during commissioning.
• Never undo the electrical connections to the motor when it is live. Control and power leads may be live, even if the motor is not running.

Note

Smooth operation

• Ensure that there the servo drive and the motor are earthed properly. See below for further information regarding EMC shielding and earthing. Earth the mounting plate and motor housing. Information about the connection method can be found in the section entitled Connection with pre-assembled cables and connector box AL225x
• Use only cables approved by Beckhoff for the operation of the AL2xxx.
• Route the power and encoder cables as separately as possible from one another (separation > 20 cm). This will improve the immunity of the system to electromagnetic interference.
• Route all cables with an adequate cross-sectional area according to EN 60204. The recommended cross-sectional areas can be found in the technical data.
• Wiring:

Note

HF interference

The ground symbol , which you will find in the circuit diagrams, indicates that you must provide an electrical connection, with as large a surface area as possible, between the unit indicated and the mounting plate in the control cabinet. This connection is to suppress HF interference and must not be confused with the PE (protective earth) symbol (protective measure according to EN 60204).