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

Operating Guide | VLT® Midi Drive FC 280

Electrical Installation

4

Safety Instructions

4.1
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.
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Simultaneously lock out/tag out all the drives.
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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
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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
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applications with multiple motors.
Input fusing is required to provide short-circuit and overcurrent protection. If not factory-supplied, the installer must provide fuses.
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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.
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Power connection wire recommendation: Minimum 75 °C (167 °F) rated copper wire. See
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wire sizes and types.

EMC-compliant Installation

4.2
To obtain an EMC-compliant installation, follow the instructions provided in
Motor, and chapter Control Wiring.
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WARNING
WARNING
4.3 Grounding, 4.4 Wiring
Electrical Installation
9.5 Cable Specifications for recommended
Diagram, 4.7.1 Connecting the
AQ381425076031en-000201 / 130R1223 | 23