PACMotion™ Rotary Servo Motors Installation and User Manual
Section 4
GFK-3169B
October 2020
Electrical Installation
18
Section 4:
Electrical Installation
Note: Pinout for the connector can be found in chapter "Connector Pinout". Pinout of the servo amplifier's
end can be found in the instructions manual of the servo amplifier.
4.1
Important notes
Note: Only staff qualified and trained in electrical engineering are allowed to wire up the motor.
4.1.1
Dangerous voltage!
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.
There is a risk of death or severe injury from touching exposed contacts. Ensure that the switch cabinet
remains turned off (barrier, warning signs etc.). The individual voltages will only be turned on again
during setup.
Never undo the electrical connections to the motor while it is energized. Risk of electric shock! In
unfavorable circumstances, electric arcs can arise causing harm to people and damaging contacts.
A dangerous voltage, resulting from residual charge, can be still present on the capacitors up to 10
minutes after switch-off of the mains supply. Even when the motor is not rotating, control and power
leads may be live.
Measure the DC-link voltage and wait until it has fallen below 60V.
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 switch cabinet. This connection is to suppress HF interference and must not be
confused with the PE (protective earth) symbol
(protective measure to EN 60204).
To wire up the motor, use the wiring diagrams in the Installation and Setup Instructions of the servo
amplifier which is used.
4.2
Guide for electrical installation
•
Check that the servo amplifier and motor match each other. Compare the rated voltage and
rated current of the unit. Carry out the wiring according to the wiring diagram in the instructions
manual of the servo amplifier. The connections to the motor are shown in chapter "Connector
Pinout".
•
Install all cables carrying a heavy current with an adequate cross-section, as per
EN 60204. The recommended cross-section can be found in the Technical data.
Note: In case of long motor cables (>25m) and dependent on the type of the used servo amplifier a motor
choke (3YL or 3YLN) must be switched into the motor cable (see instructions manual of the servo
amplifier and accessory manual).
•
Ensure that there is proper earthing of the servo amplifier and the motor. Use correct earthing
and EMC-shielding according to the instructions manual of the servo amplifier which is used.
Earth the mounting plate and motor casing.
•
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 instructions
manual of the servo amplifier).
