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5. Electrical Installation

5.1. Grounding the Drive

This manual is intended as a guide for proper installation. ABB Drives Ltd cannot assume responsibility for the compliance or the

non-compliance to any code, national, local or otherwise, for the proper installation of this drive or associated equipment. A

hazard of personal injury and/or equipment damage exists if codes are ignored during installation.

This ACS255 contains high voltage capacitors that take time to discharge after removal of the main supply. Before working on the

drive, ensure isolation of the main supply from line inputs. Wait ten (10) minutes for the capacitors to discharge to safe voltage

levels. Failure to observe this precaution could result in severe bodily injury or loss of life.

Only qualified electrical personnel familiar with the construction and operation of this equipment and the hazards involved should

install, adjust, operate, or service this equipment. Read and understand this manual and other applicable manuals in their entirety

before proceeding. Failure to observe this precaution could result in severe bodily injury or loss of life.

5.1.1. Recommended installation for EMC compliance.

Whenever possible use Shielded motor cables-

maintaining shield as far as possible along the cable.

=/>100mm

 Twisted-Pair shielded cables for analog control and motor

feedback signals.

 Ensure Filter chassis is making metal-metal contact with

Mounting panel.

RFI Filter

Option

Site Ground Bus-Bar bonded to Metal Back-Panel

panel which is bonded to main power ground.

Metal Back-Panel

U V W

360° bonding

EMC cable gland

(Best-Practice)

(Shield to Motor

Chassis)

 Avoid long parallel

runs of motor cables

with other cables

 Where control cables must cross power

cables make sure they are as near to 90

degrees as possible.

Other manuals for ABB ACS255

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