Danfoss VLT Setup guide

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VLT Installation

Rev.02 1

North America

Motion Controls

Confidential / Property of Danfoss Drives A/S

Danfoss Drives

VLT®Installation

General Installation

Danfoss Drives, VLT - Installation Startup Check List

General Installation

This presentation deals with the start-up of a Danfoss Drive, also known as a VLT. It

is designed to help handle the start-up of the drive for general installation in normal

applications. Because of the flexibility of these drives, there may be some specialized

applications that are not covered by these instructions. In that case, refer to the

Instruction Manual that came with the drive for specific information.

VLT Installation

Rev.02 2

North America

Motion Controls

Confidential / Property of Danfoss Drives A/S

VLT®Installation

General Installation

Introduction & Objectives

1. Warning

2. Reference material

3. Pre-Installation Checks

4. Installation Checks

5. Wiring

General Installation

This training module covers the checks and installation for any VLT. This section

starts with warnings, reference material, pre-installation checks, installation checks

and then covers general information about wiring. Control Wiring, Programming and

Startup of the VLT are covered in greater detail in following module designed for a

specific drive and application.

VLT Installation

Rev.02 3

North America

Motion Controls

Confidential / Property of Danfoss Drives A/S

Student is able to…

• State the main danger and precaution to be taken

when working with a VLT.

• Identify the Reference Material needed for an

installation and where that material may be found.

• Locate and explain each of the 9 steps needed during

the pre-installation checks.

• Identify the 4 installation checks for proper operation.

• Identify the correct terminals and general instructions

concerning the wiring of the power input, motor

output, control, external 24Vdc, brake and load-

sharing.

Objectives

These objectives are listed as a goal for this training module. A review at the end of

this module tests the student concerning these objectives.

VLT Installation

Rev.02 4

North America

Motion Controls

Confidential / Property of Danfoss Drives A/S

Touching the electrical parts of the VLT may be fatal.

The largest models can require a significant amount of

time to discharge it’s internal circuitry to a safe level after

being disconnected from the incoming AC line power.

Check Instruction Manual for further warnings.

Warning

Touching the electrical parts of the VLT may be fatal — even after it has been

disconnected from the AC line. Even after power has been removed, the DC Link

Capacitors may take up to 50 minutes to fully discharge. The larger the drive the

larger the electrolytic capacitors in its power circuitry, which can maintain a

dangerous voltage level for up to 50 minutes on the largest power models, even

after power has been removed. Always be sure that power has been removed from

the drive for at least 50 minutes before working with the power circuitry of the drive.

Smaller drives can discharge sooner, refer to the instruction manual for more

details.

It is always wise to use a voltmeter to measure any potentially dangerous electrical

circuit before working on it.

It is important that the installer review additional warnings found in the instruction

manual for each Danfoss Drive.

VLT Installation

Rev.02 5

North America

Motion Controls

Confidential / Property of Danfoss Drives A/S

a. Instruction Manual

with each Drive

Other Useful Information

b. Connection Diagram

c. Schematic Diagram

2) Reference Material

These three pieces of reference material may be available to you when you are

starting up a drive.

a) The VLT Instruction Manual provides general information on topics like mounting

clearances, fuses, terminal tightening torques, and drive parameters. An instruction

Manual is shipped with each drive.

From the Customer, a Connection Diagram may be available which provides a sketch

indicating the layout and use of the equipment in the system.

c) A Schematic Diagram from the customer could also provide details of the wiring

between the drive, any options, and the control system.

VLT Installation

Rev.02 6

North America

Motion Controls

Confidential / Property of Danfoss Drives A/S

a. Visual Inspection

b. Proper Handling

c. Remove IM and kits from box

d. Check that VLT matches what was ordered

e. Check Incoming Power, Drive and Motor that they are

the same voltage range.

f. Insure that all hand tools, auxiliary equipment and kits

are available.

g. Insure Drive can handle maximum current of motor

h. Record Motor Data

i. Check Motor Wiring

3) Pre-Installation Checks

This next section covers the 9 steps necessary in the pre-installation check.

VLT Installation

Rev.02 7

North America

Motion Controls

Confidential / Property of Danfoss Drives A/S

• Make a visual inspection for damage to the drive.

• Take into account the weight and size of the drive

and have proper equipment to lift the drive from its

container and to mount it safely.

a. Inspection and b. Handling

3) Pre-Installation Checks

a. Once you have opened the box, check the VLT for any visual damage. If there is

major damage, please contact the organization that sold you the drive.

b. Some of the VLTs are very large, which require special equipment to remove it

from its container and mount it safely. It is important that a qualified material

handler removes the VLT from its packaging. It might also be necessary to

investigate the pathway the VLT takes to its mounting to insure it can fit around

each turn and under doorways.

VLT Installation

Rev.02 8

North America

Motion Controls

Confidential / Property of Danfoss Drives A/S

• Remove the Instruction Manual (IM) from

the box; and the Accessory Kit if present.

3) Pre-Installation Checks

c. Remove IM and kits

3) Pre-Installation Checks

c. It is important that all extra material, such as the Instruction Manual and

accessory kit be removed from the drive’s container. These are used later. If you

can not find the Instruction Manual, contact the person who originally opened the

container.

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