ABB ACS300 AC Drives User Manual (EN)

ACS 300 User’s Manual ACS 300 AC Drives for Speed Control of 1/2 Hp to 15 Hp Squirrel Cage Motors

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ACS 300 AC Drives for Speed Control of 1/2 Hp to 15 Hp Squirrel Cage Motors User’s Manual ACS300-US-04 Effective: 1/1/1998 Valid from software version CDS02E.1 / CDH02E.1 © 1996 ABB Industrial Systems All Rights Reserved.

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Safety Instructions Overview This chapter states the safety instructions which must be fol- lowed when installing, operating and servicing the ACS 300. If neglected, physical injury and death may follow, or dam- age may occur to the AC drive, the motor and driven equip- ment. The material in this chapter must be studied before attempting any work on or with the unit. Warnings and Notes This manual distinguishes two sorts of safety instructions. Warnings are used to inform of conditions which can, if proper steps are not taken, lead to a serious fault condition, physical injury and death.

Notes are used when the reader is required to pay special attention or when there is addi- tional information available on the subject. Notes are less crucial than warnings, but should not be disregarded. Warnings Readers are informed of situations that can result in serious physical injury and/or serious damage to equipment with the following symbols: Dangerous Voltage Warning warns of situations in which a high voltage can cause physical injury and/or damage equipment. The text next to this symbol describes ways to avoid the danger. General Warning warns of situations which can cause physical injury and/or damage equipment by means other than electrical.

The text next to this symbol describes ways to avoid the danger. ACS 300 User’s Manual v

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Safety Instructions Notes Readers are notified of the need for special attention or additional information available on the subject with the fol- lowing symbols: CAUTION! Caution emphasizes a matter in order to draw special attention to it. Note! Note gives additional information or points out more information available on the subject. General Safety Instructions These safety instructions are intended for all work on the ACS 300. WARNING! All electrical installation and maintenance work on the ACS 300 should be carried out by qualified electricians. The ACS 300 and adjoining equipment must always be properly grounded. The motor and all accessories must be grounded through ACS 300.

All the ACS 300 units include capacitors connected between the main circuit and the frame. These capacitors increase the ground leakage current through the ground connection to the power line and may cause some ground fault circuit breakers to trip. WARNING! All electrical installation and maintenance work on the ACS 300 should be carried out by qualified electricians. Do not attempt any work on a powered ACS 300. After switching off the power, always allow the DC bus capacitors 5 minutes to discharge before working on the AC drive, the motor or the motor wiring. It is good practice to check (with a voltage indicating instrument) that the AC drive is in fact unpowered before beginning work.

vi ACS 300 User’s Manual

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