BECKHOFF AM8100 - Manual (Page 21)

Electrical installation
8 Electrical installation
8.1 Important notes
DANGER
Serious risk of injury through electric shock!
• Only staffs qualified and trained in electrical engineering are allowed to wire up the Mo­
tor.
Check the assignment of the servo terminal and the motor.Compare the rated voltage
and the rated current of the devices.
• Always make sure that the motors are de­energised during assembly and wiring, i.e. no
voltage may be switched on for any piece of equipment which is to be connected. En­
sure that the control cabinet remains turned off (barrier, warning signs etc.). The individ­
ual 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.
Attention
Failure free operation
• Ensure that the servo terminal and the motor are earthed properly.See below for further
information regarding EMC shielding and earthing.Earth the mounting plate and motor
housing.Further details of connection types can be found in Section Connection of mo‐
tors with pre‐assembled cables [
} 22]
• Only use cables approved by Beckhoff for operating the AM8100 with the “one­cable
technology” (OCT).
• Route the power and control cables as separately as possible from one another (sepa­
ration > 20 cm).This will improve the immunity of the system to electromagnetic interfer­
ence.If a motor power cable is used which includes integral brake control leads, then
these brake control leads must be shielded.The shielding must be connected at both
ends (see sectionShielding concept [
} 24])
• Install all cables carrying a heavy current with an adequate cross­section, as per EN
60204. The recommended cross­section can be found in the technical data.
• Wiring
ð Connect the feedback cable
ð Connect the motor cables
ð Connect shields to shield terminals or EMC connectors at both ends
ð Connect the motor holding brake
Attention
HF interference
The ground symbol , which you will find in the wiring 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 sup­
press HF interference and must not be confused with the PE (protective earth) symbol (pro­
tective measure according to EN 60204).
Synchronous servomotor AM8100 21 Version 1.1