Nix Product Manual |
Wiring and Connections
INGENIA | 01/22/2019
56
7 Wiring and Connections
Proper wiring, and
especially grounding and shielding
, are essential for ensuring safe, immune and optimal servo
performance of Nix Servo Drive. Next pages show detailed connection recommendation as well as technical details
of each interface.
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•
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Motor and shunt braking resistor
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7.1 Protective earth
Connection of Nix Servo Drive and motor housing to Protective Earth (PE)
is required for
safety
reasons.
Electrical faults can electrically charge the housing of the motor or cabinet, increasing the risk of electrical
shocks. A proper connection to PE derives the charge to Earth, activating the installation safety systems
(differential protections) and protecting the users.
Moreover, a proper connection to PE prevents many of the noise problems that occur operating a servo drive.
Nix Servo Drive provides the following earth/ground connection points, which are internally connected
and decoupled to power ground:
•
Plated holes for standoffs.
A diagram of the recommended Earth wiring is shown following.
Reducing EMI susceptibility
Connecting the drive PE terminals
and cold plate screws
to your system Earth and to the motor
housing solves many noise and EMI problems.
The PE drive terminals are decoupled to power ground
through a safety capacitor. This provides a low impedance
preferential path for coupled common mode
noises that otherwise would be coupled to sensitive electronics like the encoders. A good
grounding of
the drive to the earth of the power supply
is also essential for a EMI reduction.
