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1.9.2 Installation Procedure
N O T I C E
The horizontal and vertical decoupling plates are only required for fieldbus connections (see illustrations 2.4 to 2.6).
Procedure
Identify the product variant using
1.1.5 Verifying the Shipment and the Contents
and
.
Ensure the installation environment criteria in
1.1.9.1 Installation Environment
are met.
Review the wiring schematic (see illustration 2.1). All wiring must comply with local and national regulations related to
cross-section and ambient temperature requirements. Loose connections can cause equipment faults or reduced perform-
ance. Tighten the terminals according to the torque value shown in
1.1.8 Connection Tightening Torques
The drive may be suitable for use on a circuit capable of delivering up to 100 kA short circuit current rating (SCCR) at 480 V.
For fuse, circuit breaker, and switch SCCR ratings, see the VLT
®
Midi Drive FC 280 Design Guide and the VLT
®
Midi Drive
FC 280 Operating Guide.
Install the drive following the numbered steps in the Illustrations chapter. Note that certain illustrations pertain to specific
enclosure sizes and are marked as such.
Attach accessory bag components to the drive.
Mount the drive vertically to a solid flat surface or to the optional backplate. Use the slotted mounting holes on the
unit for wall mounting. Allow 100 mm (3.9 in) clearance above and below the drive for natural convection cooling.
For electrical safety ensure the correct grounding of the FC 280 by a certified electrical installer in accordance with
applicable standards and directives.
Use a dedicated ground wire for input power, motor power, and control wiring.
Do not ground 1 drive to another in daisy-chain format.
Keep the motor and ground wire connections as short as possible.
Follow motor manufacturer wiring requirements.
Minimum cable cross-section for the ground wires: 10 mm
2
(7 AWG).
Minimum 200 mm (7.87 in) between control cables, motor cables, and mains cables.
Separately terminated individual ground wires, both complying with the dimension requirements.
Install the control wiring.
Install the motor, mains, and ground wiring.
Replace the cover.
Perform initial drive and motor set up. Consult the VLT
®
Midi Drive FC 280 Programming Guide.
1.10 Power Losses and Efficiency
For power loss data including part load losses, see
https://ecosmart.mydrive.danfoss.com
.
1.11 Safe Torque Off (STO)
1.11.1 Safety Precautions for STO
Only qualified personnel are allowed to install or operate this equipment.
Qualified personnel are defined as trained staff, who are authorized to install, commission, and maintain equipment, systems, and
circuits in accordance with pertinent laws and regulations. Also, the personnel must be familiar with the instructions and safety
measures described in this manual.
N O T I C E
Additional information on the Safe Torque Off safety feature can be found in the
VLT
®
Midi Drive FC 280 Operating Guide
.
N O T I C E
After installation of STO, perform a commissioning test as specified in
1.1.11.4 STO Commissioning Test
test is mandatory after first installation and after each change to the safety installation.
AN41533976851001-000101 /
130R1264
8
| Danfoss A/S © 2022.06
VLT® Midi Drive FC 280
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