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VLT Ea4 Parallel Drive Modules
Operating Guide
Indicates information considered important, but not hazard-related (for example, messages relating to property damage).
1.6 Safety Precautions
LACK OF SAFETY AWARENESS
This guide gives important information on preventing injury and damage to the equipment or the system. Ignoring this informa-
tion 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.
LIFTING HEAVY LOAD
The drive is heavy. Lifting heavy objects incorrectly can result in death, injury, or property damage.
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Follow local safety regulations on lifting.
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Check the weight of the drive. The weight is provided on the outside of the shipping box.
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If lifting equipment is used, ensure that it is in proper working condition and can safely lift the weight of the drive.
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Test lift the drive to verify the proper center of gravity lift point. Reposition if not level.
HAZARDOUS VOLTAGE
AC drives contain hazardous voltage when connected to the AC mains or connected on the DC terminals. Failure to perform
installation, 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.
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. See
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Verify full discharge by measuring the voltage level.
INTERNAL FAILURE HAZARD
An internal failure in the drive can result in serious injury when the drive is not properly closed.
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Ensure that all safety covers are in place and securely fastened before applying power.
Danfoss A/S © 2023.01
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Introduction and Safety
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