Name: Danfoss VLT AutomationDrive FC 300
Brand: Danfoss
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3.3.1 Power and Control Wiring for Non-shielded Cables

Induced Voltage!

Run motor cables from multiple drives separately. Induced voltage from output motor cables run together can charge equipment

capacitors even with the equipment turned off and locked out. Failure to run output cables separately could result in death or serious

injury.

Run drive input power, motor wiring, and control wiring in three separate metallic conduits or trays for high frequency noise isolation.

Failure to isolate power, motor, and control wiring could result in less than optimum controller and associated equipment performance.

Because the power wiring carries high frequency electrical pulses, it is important that input power and motor power are run in separate conduit. If the

incoming power wiring is run in the same conduit as the motor wiring, these pulses can couple electrical noise back onto the building power grid. Control

wiring should always be isolated from the high voltage power wiring.

When shielded/armored cable is not used, at least three separate conduits must be connected to the panel option (see figure below).

• Power wiring into the enclosure

• Power wiring from the enclosure to the motor

• Control wiring

Figure 3.2: Power and control wiring connection

3.3.2 Removal of Knockouts for Extra Cables

1. Remove the cable entry from the adjustable frequency drive (this prevents foreign parts from falling into the adjustable frequency drive when

removing knockouts)

2. The cable entry must be supported around the knockout you intend to remove.

3. The knockout can now be removed with a strong mandrel and a hammer.

4. Remove burrs from the hole.