ABB ACS800-17 Manuale utente

ACS 800

Hardware Manual

ACS800-17 Drives (75 to 1120 kW)

Hardware Manual

3AFE 64681338 Rev B

EFFECTIVE: 10.3.2003

Safety instructions

What this chapter contains

This chapter contains safety instructions 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.

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 advise 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 voltages which can cause

physical injury and/or damage to the equipment.

General warning warns about conditions, other than those caused by

electricity, which can result in physical injury and/or damage to the

equipment.

Electrostatic discharge warning warns of electrostatic discharge which

can damage the equipment.

Safety instructions

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.

WARNING!

•Only qualified electricians are allowed to install and maintain the drive.

•Never work on the drive, the motor cable or the motor when main power is

applied. After switching off the input power, always wait for 5 min to let the

intermediate circuit capacitors discharge before you start working on the drive,

the motor or the motor cable. Measure the voltage between terminals UDC+

and UDC- with a multimeter (impedance at least 1 Mohm) to ensure that the

drive is discharged before beginning work.

•Apply temporary grounding before working on the unit.

•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 to exist inside the drive even when the main power of the

drive is switched off.

•Do not make any insulation tests without disconnecting the drive from the

cabling first.

•When reconnecting the motor cable, always check that the phase order is

correct.

•When joining shipping splits (if any), check the cable connections at the joints

before switching on the supply voltage.

•Live parts on the inside of the doors are protected against direct contact.

Special attention shall be paid when handling metallic shrouds.

Note:

•The motor cable terminals on the drive are at a dangerously high voltage when

the input power is on, regardless of whether the motor is running or not.

•The brake control terminals (UDC+, UDC-, R+ and R- terminals) carry a

dangerous DC voltage (over 500 V).

•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.

•The Prevention of Unexpected Start function does not remove the voltage from

the main and auxiliary circuits.

Safety instructions

WARNING!

•Make sure that dust from drilling does not enter the drive when installing.

Electrically conductive dust inside the unit may cause damage or lead to

malfunction.

•Fastening the cabinet by riveting or welding is not recommended. However, if

the cabinet is fastened by welding, connecting the return wire improperly may

damage electronic circuits in the cabinet. Ensure that welding fumes are not

inhaled.

•Ensure sufficient cooling. If the drive is equipped with a double roof, ensure that

the roof is lifted up from the transportation position to enable the cooling air flow

before starting the drive.

Air flow from below (from a cable conduit) to the cabinet must be prevented to

ensure the degree of protection and fire protection.

•Cooling fans may continue to rotate for a while after the disconnection of the

electrical supply.

•Some parts inside the drive cabinet, such as heatsinks of power

semiconductors, remain hot for a while after the disconnection of the electrical

supply.

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.

Safety instructions

Grounding

These instructions are intended for all who are responsible for the grounding of the

drive. Incorrect grounding can cause physical injury, death or equipment malfunction

and increase electromagnetic interference.

Fibre optic cables

WARNING!

•Ground the drive, the 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 as required by

safety regulations.

•In a multiple-drive installation, connect each drive separately to protective

earth (PE).

•Do not install a drive equipped with an EMC (line) filter to an ungrounded

power system or a high resistance-grounded (over 30 ohms) power system.

Note:

•Power cable shields are suitable for equipment grounding conductors only

when adequately sized to meet safety regulations.

•As the normal leakage current of the drive is higher than 3.5 mA AC or 10 mA

DC (stated by EN 50178, 5.2.11.1), a fixed protective earth connection is

required.

WARNING!

•Handle the fibre optic cables with care. When unplugging optic cables, always

grab the connector, not the cable itself. Do not touch the ends of the fibres with

bare hands as the fibre is extremely sensitive to dirt. The maximum allowed

bend radius is 25 mm (1 in.).

Safety instructions

Operation

These warnings are intended for all who plan the operation of the drive or operate

the drive. Ignoring the instructions can cause physical injury or death or damage the

equipment.

WARNING!

•If the drive is equipped with an optional brake unit, make sure there are

inverters connected to the intermediate circuit before start. As a rule of thumb,

the sum capacitance of the inverters connected must be at least 30% of the

sum capacitance of all inverters.

•Close the switch fuses of all parallel-connected inverters before start.

•Do not open the DC switch fuse of an inverter when the inverter is running.

•Do not use the Prevention of Unexpected Start feature for stopping the drive

when the inverter unit(s) is running. Give a Stop command instead.

WARNING!

•Before adjusting the drive and putting it into service, make sure that the motor

and all driven equipment are suitable for operation throughout the speed range

provided by the drive. The drive can be adjusted to operate the motor at

speeds above and below the speed provided by connecting the motor directly

to the power line.

•Do not activate automatic fault reset functions of the Standard Application

Program if dangerous situations can occur. When activated, these functions

will reset the drive and resume operation after a fault.

•Do not control the motor with the disconnecting device (means); instead, use

the control panel keys and , or commands via the I/O board of the drive.

The maximum allowed number of charging cycles of the DC capacitors (i.e.

power-ups by applying power) is five in ten minutes.

Note:

•If an external source for start command is selected and it is ON, the drive (with

Standard Application Program) will start immediately after fault reset unless the

drive is configured for 3-wire (a pulse) start/stop.

•When the control location is not set to Local (L not shown in the status row of

the display), the stop key on the control panel will not stop the drive. To stop

the drive using the control panel, press the LOC/REM key and then the stop

key .

Safety instructions

Permanent magnet motor

These are additional warnings concerning permanent magnet motor drives.

WARNING! Do not work on the drive when the permanent magnet motor is rotating.

Also when the supply power is switched off, a rotating permanent magnet motor

feeds power to the intermediate circuit of the drive and also the supply connections

become live (even when the inverter is stopped!).

Installation and maintenance work

• Disconnect the motor from the drive with a safety switch

and additionally, if possible,

• lock the motor shaft and ground the motor connection terminals temporarily by

connecting them together as well as to the PE.

Operation

Do not run the motor above the rated speed. Motor overspeed leads to overvoltage

which may result in explosion of the capacitors in the intermediate circuit of the drive.

Application program

Controlling a permanent magnet motor is only allowed using the ACS 800

Permanent Magnet Synchronous Motor Drive Application Program, or using other

application programs in scalar control mode only.

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