4
Safety instructions
3ADW000803R0101 DCS880 H4T (Tosa) manual en a
Safety instructions
What this chapter contains
This chapter contains the safety instructions you must follow when installing, operating and servicing
the drive/unit.
If ignored, physical injury or death may follow, or damage may occur to the drive/unit, the motor/load 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 line DCS880, the converter modules DCS880-
S0x size H1 … H8, field exciter units DCF80x, Rebuild Kit DCS880-R00, etc.
Usage 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 or death
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 devices 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/unit, motor/load cable or motor/load.
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/unit!
−
Never work on the drive/unit, motor/load cable or motor/load when mains power is
applied.
−
Always ensure by measuring with a multimeter (impedance at least 1 M
Ω
) that:
−
1. Voltage between drive/unit input phases U1, V1 and W1 and the frame is close
to 0 V.
−
2. 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/unit or to the
external control circuits. Externally supplied control circuits may cause dangerous
voltages inside the drive/unit even when the mains power on the drive/unit is switched
off.
−
Do not make any insulation resistance or voltage withstand tests on the drive/unit or
drive modules.
−
Isolate the motor/load cables from the drive/unit when testing the insulation
resistance or voltage withstand of the cables or the motor/load.
−
When reconnecting the motor/load cable, always check that the C+ and D- cables are
connected with the proper terminal.
