ABBDCS880Hardware manual DCS880 Drives (20 A ... 5200 A)

Safety instructions What this chapter contains

y instructions What this chapter contains

This chapter contains the safety instructions which you must follow when installing, operating and servicing the drive. If ignored, physical injury or death may follow, or damage may occur to the drive, the motor or driven equipment. Read the safety instructions before you work on the unit.

To which products this chapter applies

The information is valid for the whole range of the product DCS880, the converter modules DCS880-S0x size H1 ... H8, field exciter units DCF80x, etc. like the Rebuild Kit DCS880-R00.

Use of warnings and notes

There are two types of safety instructions throughout this manual: warnings and notes. Warnings caution you about conditions which can result in serious injury or death and/or damage to the equipment and advice on how to avoid the danger. Notes draw attention to a particular condition or fact, or give information on a subject. The warning symbols are used as follows:

Dangerous voltage warning warns of high voltage which can cause physical injury and/or damage to the equipment. General danger warning warns about conditions, other than those caused by electricity, which can result in physical injury or death and/or damage to the equipment. Electrostatic sensitive discharge warning warns of electrostatic discharge which can damage the equipment

Installation and maintenance work These warnings are intended for all who work on the drive, motor cable or motor. Ignoring the instructions can cause physical injury or death and/or damage to the equipment.

WARNING – Only qualified electricians are allowed to install and maintain the drive! – Never work on the drive, motor cable or motor when main power is applied. – Always ensure by measuring with a multimeter (impedance at least 1 MOhm) that: Voltage between drive input phases U1, V1 and W1 and the frame is close to 0 V. Voltage between terminals C+ and D- and the frame is close to 0 V. – Do not work on the control cables when power is applied to the drive or to the external control circuits. Externally supplied control circuits may cause dangerous voltages inside the drive even when the main power on the drive is switched off. – Do not make any insulation resistance or voltage withstand tests on the drive or drive modules. – Isolate the motor cables from the drive when testing the insulation resistance or voltage withstand of the cables or the motor. – When reconnecting the motor cable, always check that the C+ and D- cables are connected with the proper terminal.

Notes: – The motor cable terminals on the drive are at a dangerously high voltage when the main power is on, regardless of whether the motor is running or not. – Depending on the external wiring, dangerous voltages (115 V, 220 V or 230 V) may be present on the relay outputs of the drive system (e.g. XRO1 ... XRO3). – DCS880 with enclosure extension: Before working on the drive, isolate the whole drive from the supply.

Grounding These instructions are intended for all who are responsible for the grounding of the drive. Incorrect grounding can cause physical injury, death and/or equipment malfunction and increase electromagnetic interference

WARNING – Ground the drive, motor and adjoining equipment to ensure personnel safety in all circumstances, and to reduce electromagnetic emission and pick-up. – Make sure that grounding conductors are adequately sized and marked as required by safety regulations. – In a multiple-drive installation, connect each drive separately to protective earth (PE ). – Minimize EMC emission and make a 360° high frequency grounding (e.g. conductive sleeves) of screened cable entries at the cabinet lead-through plate. – Do not install a drive equipped with an EMC filter to an ungrounded power system or a high resistance-grounded (> 30 Ohms) power system.

Notes: – Power cable shields are suitable as equipment grounding conductors only when adequately sized to meet safety regulations. – As the normal leakage current of the drive is higher than 3.5 mAAC or 10 mADC, a fixed protective earth connection is required. – This product can cause a DC current in the protective earthing conductor. Where a residual current-operated protective (RCD) or monitoring (RCM) device is used for protection in case of direct or indirect contact, only an RCD or RCM of Type B is allowed on the supply side of this product.

Printed circuit boards and fiber optic cables These instructions are intended for all who handle the circuit boards and fiber optic cables. Ignoring the following instructions can cause damage to the equipment.

WARNING – The printed circuit boards contain components sensitive to electrostatic discharge. Wear a grounding wrist band when handling the boards. Do not touch the boards unnecessarily. – Use grounding strip:

WARNING – Handle the fiber optic cables with care. The minimum allowed bend radius is 35 mm (1.38 in.). – When unplugging optic cables, always grab the connector, not the cable itself. – Do not touch the ends of the fibers with bare hands as the fiber is extremely sensitive to dirt.

Mechanical installation These notes are intended for all who install the drive. Handle the unit carefully to avoid damage and injury.