WEG CFW501, Руководство пользователя, Страница: 21 / 149

16 | CFW501
Installation and Connection
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When using shielded cables to install the motor:
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Follow the safety recommendations of IEC 60034-25.
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Use the low impedance connection for high frequencies to connect the cable shield
to the grounding. Use parts supplied with the inverter.
„
The accessory “CFW500-KPCSx power and control cable shielding kit” can be mounted
in the lower part of the cabinet. Figure 3.3 shows a detailed example of the connection
of the power supply and the motor cable shield to the accessory CFW500-KPCSA.
Besides, this accessory allows the connection of the control cable shield.
Figure 3.3: Details of the connection of the power supply and the motor cable shield to the accessory
CFW500-KPCSA
3.2.4 Grounding Connections
DANGER!
„
The inverter must be connected to a protection grounding (PE).
„
Use grounding wiring with a gauge at least equal to that indicated in table B.1 .
„
The maximum tightening torque of the grounding connections is of 1.7 N.m
(15 lbf.in).
„
Connect the grounding points of the inverter to a specific grounding
rod, or specific grounding point or to the general grounding point
(resistance ≤ 10 Ω).
„
The neuter conductor that powers up the inverter must be solidly grounded;
however, this conductor must not be used to ground the inverter.
„
Do not share the grounding wiring with other equipment that operate
with high currents (e.g. high power motors, soldering machines, etc.).