Daikin ACS320 - Safety; Use of Warnings; Safety in Installation and Maintenance; Electrical Safety

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This section contains 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, motor or driven equipment. Read the
safety instructions before you work on the drive.
Use of Warnings
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. The following warning
symbols are used in this manual:
DANGER
Electricity warning warns of hazards from electricity which
can cause physical injury or death and/or damage to the
equipment.
WARNING
General warning warns about conditions, other than those
caused by electricity, which can result in physical injury and/
or damage to the equipment.
Safety in Installation and
Maintenance
These warnings are intended for all who work on the drive,
motor cable or motor.
Electrical safety
DANGER
Ignoring the following instructions can cause physical injury or
death, or damage to the equipment.
Only qualied electricians are allowed to install and
maintain the drive!
• Never work on the drive, motor cable or motor when input
power is applied. After disconnecting the input power,
always wait for 5 minutes to let the intermediate circuit
capacitors discharge before you start working on the
drive, motor or motor cable.
Always ensure by measuring with a multimeter
(impedance at least 1 Mohm) that there is no voltage
between the drive input phases U1, V1 and W1 and the
ground.
• 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 carry dangerous voltage
even when the input power of the drive is switched off.
• Do not make any insulation or voltage withstand tests on
the drive.
• If a drive whose EMC lter is not disconnected is installed
on an IT system (an ungrounded power system or a high
resistance-grounded [over 30 ohms] power system), the
system will be connected to ground potential through the
EMC lter capacitors of the drive. This may cause danger
or damage the drive.
• If a drive whose EMC lter is not disconnected is installed
on a corner grounded TN system, the drive will be
damaged.
• All ACS320 Drive End Grounding screws are removed at
the factory. See Product Overview for location details.
OM 1190-1 • MD4 VFD 4 www.DaikinApplied.com
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