Electrical Installation; Safety Instructions; Emc-Compliant Installation - Danfoss VLT FC 280 Operating Manual

VLT® Midi Drive FC 280
Operating Guide

4 Electrical Installation

4.1 Safety Instructions

See chapter Safety for general safety instructions.
INDUCED VOLTAGE
Induced voltage from output motor cables that run together can charge equipment capacitors, even with the equipment turned
off and locked out/tagged out. Failure to run output motor cables separately or to use shielded cables could result in death or
serious injury.
-
Run output motor cables separately or use shielded cables.
-
Simultaneously lock out/tag out all the drives.
ELECTRICAL SHOCK AND FIRE HAZARD – RCD COMPLIANCE
The drive can cause a DC fault current in the PE conductor. Failure to use a Type B residual current-operated protective device
(RCD) can lead to the RCD not providing the intended protection and therefore can result in death, fire, or other serious hazard.
-
When an RCD is used for protection against electrical shock or against fire, only a Type B device is allowed on the supply side.
Overcurrent protection
• Extra protective equipment, such as short-circuit protection or motor thermal protection between drive and motor, is required
for applications with multiple motors.
• Input fusing is required to provide short-circuit and overcurrent protection. If not factory-supplied, the installer must provide
fuses. See maximum fuse ratings in chapter Fuses and Circuit Breakers.
Wire type and ratings
• All wiring must comply with local and national regulations regarding cross-section and ambient temperature requirements.
• Power connection wire recommendation: Minimum 75 °C (167 °F) rated copper wire. See
mended wire sizes and types.

4.2 EMC-compliant Installation

To obtain an EMC-compliant installation, follow the instructions provided in
the Motor, and chapter Control Wiring.
Danfoss A/S © 2022.02
W A R N I N G
W A R N I N G
4.3 Grounding,
Electrical Installation
9.5 Cable Specifications for recom-
4.4 Wiring Schematic, 4.7 Connecting
AQ381425076031en-000101 / 130R1223 | 21