User manual

3 Installation

3.5 EMC installat ion

DC1 Variable Frequency Drive 04/16 MN04020003Z-EN www.eaton.com 67

Figure 34: Cable routing

Figure 35: Separate routing

a Power cable: mains voltage, motor connection

b Control and signal lines, fieldbus connections

￫

Route mains and motor cables in the control cabinet as close to

the ground potential as possible. This is because free moving

cables act as antennas.

￫

If routed in parallel, cables carrying high frequencies (e.g.,

screened motor cables) and clean cables (e.g., mains supply

cable, control and signal cables) should be installed at a distance

of at least 100 mm from each other in order to avoid

electromagnetic interference. You should also use separate

cable entries if there is a great difference in voltage potentials.

If control cables and power cables need to cross, they should

always do so at a right angle (90°).

￫

Do not route the control and signal cables  in the same

conduit as the power cables .

Analog signal cables (measured values, setpoints, and

correction values) must be routed inside screened conduit.

≧ 100 mm

(≧ 3.34“)

②①