Safety; Safety Symbols; Qualified Personnel; Safety Precautions - Danfoss VLT AutomationDrive FC 302 Operating Manual

Safety

2 Safety

2.1 Safety Symbols

The following symbols are used in this guide:
WARNING
Indicates a potentially hazardous situation that could
result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation that could
result in minor or moderate injury. It can also be used to
alert against unsafe practices.
NOTICE
Indicates important information, including situations that
can result in damage to equipment or property.

2.2 Qualified Personnel

Correct and reliable transport, storage, installation,
operation, and maintenance are required for the trouble-
free and safe operation of the drive. Only qualified
personnel are allowed to install or operate this equipment.
Qualified personnel are defined as trained staff, who are
authorized to install, commission, and maintain equipment,
systems, and circuits in accordance with pertinent laws and
regulations. Also, the personnel must be familiar with the
instructions and safety measures described in this manual.

2.3 Safety Precautions

WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, load sharing, or permanent motors.
Failure to use qualified personnel to install, start up, and
maintain the drive can result in death or serious injury.
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Only qualified personnel must install, start up,
and maintain the drive.
MG34U502
Operating Guide
WARNING
UNINTENDED START
When the drive is connected to the AC mains, DC supply,
or load sharing, the motor can start at any time.
Unintended start during programming, service, or repair
work can result in death, serious injury, or property
damage. The motor can start with an external switch, a
fieldbus command, an input reference signal from the
LCP or LOP, via remote operation using MCT 10 Set-up
Software, or after a cleared fault condition.
To prevent unintended motor start:
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•
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WARNING
DISCHARGE TIME
The drive contains DC-link capacitors, which can remain
charged even when the drive is not powered. High
voltage can be present even when the warning LED
indicator lights are off. Failure to wait the specified time
after power has been removed before performing service
or repair work can result in death or serious injury.
•
•
•
•
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WARNING
LEAKAGE CURRENT HAZARD
Leakage currents exceed 3.5 mA. Failure to ground the
drive properly can result in death or serious injury.
•
Danfoss A/S © 09/2018 All rights reserved.
Press [Off/Reset] on the LCP before
programming parameters.
Disconnect the drive from the mains.
Completely wire and assemble the drive, motor,
and any driven equipment before connecting
the drive to the AC mains, DC supply, or load
sharing.
Stop the motor.
Disconnect AC mains and remote DC-link power
supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
Disconnect or lock PM motor.
Wait for the capacitors to discharge fully. The
minimum waiting time is 20 minutes.
Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that the capacitors are fully
discharged.
Ensure the correct grounding of the equipment
by a certified electrical installer.
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