Danfoss VLT D1, VLT D2, VLT D3, VLT D4 Installation guide

INSTRUCTIONS

INSTALLATION OF LOAD-SHARE TERMINALS FOR VLT® DRIVES

This instruction sheet is for the field installation of load-share terminals for the VLT series
drives frames D1, D2, D3 and D4.

Kit Contents

• Bus Bars, terminals, insulator and

mounting bracket, nuts

• Instruction Sheet 175R5637

Kit Part Numbers

D1/D3 Frames: 176F8456
D2/D4 Frames: 176F8455

Required Tools

• Metric socket set 7—19 mm

• Socket extensions

• Torx driver set T10—T40

• Torque Wrench, 6—170 in-lbs

Torque Requirements

• M5 nuts: torque to 2.3 N-M (20 in-lbs)

• M6 Nuts: torque to 35 N-M (35 in-lbs)

• T25 Torx screws: torque to 2.3 N-M (20 in-lbs)

Parts for D1 and D3 Frame (not
including hardware)

Parts for D2 and D4 Frame (not in­cluding hardware)

WARNING

The frequency converter contains dangerous voltage. Disconnect power and follow lock­out/tag-out procedures before working on this equipment.

WARNING

Devices inside the frequency converter contain stored electrical energy. Wait a minimum
of 20 minutes after disconnecting power before working on this equipment.

WARNING

The input plate contains sharp edges. Use hand protection when removing and installing
the input plate.

MI.38.L1.02 - VLT® is a Danfoss Registered Trademark 1

The photo to the right shows a D2 frame with the basic input
plate. The wiring will vary depending on the installation.
The photos shown in this instructions are for a D2 frame,
however the instructions are applicable to any D-Frame VLT
drive.

1. Disconnect power and verify that the incoming power to
the VLT is off.

2. Disconnect the incoming power cables from the input
terminals. In multi-conductor applications, loosen or re­move cable clamps to allow the cables to be removed

Remove the three
13mm retaining nuts
that connect the input
plate to the input bus
bars of the VLT. Exer­cise caution to avoid
damaging control cables
that are located near
these connections.

The input plate is at­tached to the VLT frame
with five 10mm nuts.
Remove these retaining
nuts as shown. The in­put plate will be held in
place by five studs that
are attached to the VLT
frame.

Disconnect the fan
transformer wiring
harness using the
connector.

Remove the input
plate as shown.
ercise caution not to
damage control ca­bles that are located
near the top of the
input bus bars.

Ex-

MI.38.L1.02 - VLT® is a Danfoss Registered Trademark 2

Note: The upper load-share terminals on the D1/D3 frame drives are located behind the ca­pacitor bank. The gate-drive board and capacitor bank must be removed to gain access to the
upper load share terminals.

For D1/D3 Frames: Remove the gate-drive board
mounting plate (and the gate drive board) by re­moving the four electrical connectors from the
board and the four nuts that are securing the
mounting plate. The circuit board does not need
to be removed from the mounting plate. It is rec­ommended that the electrical connectors are
marked accordingly to ensure that the connectors
are re-connected to the proper receptacle.

For D1/D3 Frames: Remove the capacitor bank
to gain access to the upper load-share terminals.

WARNING

The capacitors contain stored electrical energy.
Wait a minimum of 20 minutes after disconnect­ing power before working on this equipment.

Location of upper load-share terminals for D1/D3
frame.

MI.38.L1.02 - VLT® is a Danfoss Registered Trademark 3