Considerations On Grounding - WEG SCA06 User Manual

Installation and Connection
ATTENTION!
If a disconnect switch or a contactor is installed at the power supply of the servomotor, never operate
it with the servomotor spinning or with voltage at the servo drive output.
Instructions for the servomotor cables:
WEG offers a complete range of cables to interconnect the servo drive and servomotor. The complete list with the
characteristics and applications of each model are in
Below are shown the installation details of the servo drive cable.
3
Installation:
The cables supplied by WEG are designed for a fast, safe and reliable installation. The connection to the servo drive
is done by connecting the motor feedback cables U-V-W to the plug-in type connector X8 and the connection of
the PE cable to the frame of the servo drive. The cable shield must be connected to the frame by means of the
clamp. The details of the power cable installation can be observed in
If the shield connection is not in accordance with the directions of this manual or is not done, that may cause
electromagnetic interference (RFI).

3.2.3.3 Considerations on Grounding

DANGER!
Do not share the grounding wiring with other equipment that operate with high currents (e.g. high
power motors, soldering machines, etc.). When installing several servo drive, follow the procedures
presented in
DANGER!
Ne pas partager le câblage de mise à la terre avec d'autres équipements opérant avec des intensités
élevées (par ex: moteurs haute puissance, postes de soudure, etc.). Lors de l'installation de plusieurs
Entraînement d'asservissement, appliquer les procédures présentées dans l'illustration
page 3-17
ATTENTION!
The neutral conductor of the supply that powers up the servo drive must be solidly grounded; however,
this conductor must not be used to ground the servo drive.
DANGER!
The servo drive must be connected to a protective earth (PE). The location of the grounding point of
the SCA06 is shown in
Observe the following:
Use grounding wire of a gauge at least equal to the indicated in
„
there are local standards that require different gauges, they must be observed.
Connect the grounding points of the servo drive to a specific grounding rod, or specific grounding
„
point or to the general grounding point (resistance ≤ 10 Ω).
For compatibility with standard IEC 61800-5-1, use at least a copper cable of 10 mm² or two cables
„
with the same gauge as the grounding cable specified in
servo drive to the protective earth, since the leakage current is greater than 3.5 mAac.
3-16 | SCA06
Figure 3.9 on page 3-17
pour la connexion de mise à la terre.
Figure 3.4 on page
item 8.3.2 Cables for Servomotors on page
Figure 3.8 on page
for the grounding connection.
3-8.
Table 3.1 on page 3-10
8-18.
3-15.
Figure 3.9 on
Table 3.1 on page 3-10. In case
to connect the