Electrical Installation; Safety Notes; Guide For Electrical Installation - Kollmorgen AKM Serie Manual Del Producto

Electrical Installation

Electrical Installation
18
Wiring diagrams can be found in chapter "Wiring Diagrams" from p. 87. Pinout of the servo
amplifier's end can be found in the instructions manual of the servo amplifier.
18.1

Safety notes

Only staff qualified and trained in electrical engineering are allowed to wire up the motor.
Always make sure that the motors are de-energized during assembly and wiring, i.e. No vol-
tage may be switched on for any piece of equipment which is to be connected. 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 energised. A dangerous volta-
ge, resulting from residual charge, can be still present on the capacitors several minutes af-
ter switch-off of the mains supply. Measure the DC-link voltage and wait until it has fallen
below 40V. Even when the motor is not rotating, control and power leads may be live.
The ground symbol
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.
18.2

Guide for electrical installation

l
l
l
l
l
l
English - 36
06/2010
X
, which you will find in the wiring diagrams, indicates that you
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 instruc-
tions manual of the servo amplifier. The connections to the motor are shown in chapter
"Wiring Diagrams" from p.87.
Ensure that there is proper earthing of the servo amplifier and the motor. Use correct eart-
hing and EMC-shielding according to the instructions manual of the servo amplifier which is
used. Earth the mounting plate and motor casing.
Route the power and control cables as separately as possible from one another (separation
> 20 cm). This will improve the immunity of the system to electromagnetic interference.
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 instruc-
tions manual of the servo amplifier).
Cabling:
— Route power cables as separately as possible from control cables
— Connect up the resolver or encoder.
— Connect the motor cables, install motor chokes close to the servo amplifier
— Connect shields to shielding terminals or EMC connectors at both ends
— Connect the holding brake, if used
— Connect shielding at both ends.
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.
In case of long motor cables (>25m) and dependent on the type of the used servo am-
plifier a motor choke (3YL or 3YLN) must be switched into the motor cable (see in-
structions manual of the servo amplifier and accessory manual).
Connect up all shielding via a wide surface-area contact (low impedance) and metallized
connector housings or EMC-cable glands.
Kollmorgen
Servomotors AKM