Safety; Safety Precautions - Danfoss VLT AutomationDrive FC 301 Programming Manual

VLT AutomationDrive FC 301/302
Programming Guide

2 Safety

2.1 Safety Precautions

LACK OF SAFETY AWARENESS
This guide provides important information on preventing injury and damage to the equipment or the system. Ignoring this infor-
mation can lead to death, serious injury, or severe damage to the equipment.
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Make sure to fully understand the dangers and safety measures present in the application.
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Before performing any electrical work on the drive, lock out and tag out all power sources to the drive.
HAZARDOUS VOLTAGE
AC drives contain hazardous voltage when connected to AC mains or connected on the DC terminals. Failure to perform installa-
tion, start-up, and maintenance by qualified personnel can result in death or serious injury.
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Only qualified personnel must perform installation, start-up, and maintenance.
UNINTENDED START
When the drive is connected to AC mains, DC supply, or load sharing, the motor may start at any time, causing risk of death,
serious injury, and equipment or property damage. The motor may start by activation of 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 condi-
tion.
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Press [Off] on the LCP before programming parameters.
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Disconnect the drive from the mains whenever personal safety considerations make it necessary to avoid unintended motor
start.
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Check that the drive, motor, and any driven equipment are in operational readiness.
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 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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Stop the motor.
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Disconnect all power sources, including permanent magnet type motors.
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Wait for capacitors to discharge fully. The discharge time is shown on the nameplate.
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Verify full discharge by measuring the voltage level.
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Safety