Safety; Safety Symbols; Qualified Personnel; Safety Precautions - Danfoss VLT FC 102 Installation Manual

Safety

2 Safety

2.1 Safety Symbols

The following symbols are used in this manual:
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, and installation are
required for the trouble-free and safe operation of the
®
VLT Parallel Drive Modules. Only qualified personnel are
allowed to install this equipment.
Qualified personnel are defined as trained staff, who are
authorized to install 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
The drive system contains high voltage when connected
to AC mains input. Failure to ensure that only qualified
personnel install the drive system can result in death or
serious injury.
•
Only qualified personnel are allowed to install the
drive system.
CAUTION
POTENTIAL HAZARD IN THE EVENT OF
INTERNAL FAILURE
There is a risk of personal injury when the drive modules
are not properly closed.
•
Before applying power, ensure that all safety
covers are in place and securely fastened.
MG37K302
Installation Guide
WARNING
UNINTENDED START
When the drive system is connected to AC mains, 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
via an external switch, a fieldbus command, an input
reference signal from the LCP, a cleared fault condition,
or remote operation using MCT 10 Set-up Software.
To prevent unintended motor start:
•
•
•
WARNING
DISCHARGE TIME
The drive module contains DC-link capacitors. Once
mains power has been applied to the drive, these
capacitors can remain charged even after the power has
been removed. High voltage can be present even when
the warning indicator lights are off. Failure to wait 20
minutes after power has been removed before
performing service or repair work can result in death or
serious injury.
1.
2.
3.
4.
WARNING
UNINTENDED MOTOR ROTATION
WINDMILLING
Unintended rotation of permanent magnet motors
creates voltage and can charge the capacitors in the
drive system, resulting in death, serious injury, or
equipment damage.
•
Danfoss A/S © 08/2017 All rights reserved.
Disconnect the drive system from AC mains.
Press [Off/Reset] on the LCP, before
programming parameters.
The drive system, motor, and any driven
equipment must be fully wired and assembled
when the drive is connected to AC mains.
Stop the motor.
Disconnect AC mains and remote DC-link
supplies, including battery back-ups, UPS, and
DC-link connections to other drives.
Disconnect or lock the PM motor.
Wait 20 minutes for the capacitors to discharge
fully before performing any service or repair
work.
Ensure that permanent magnet motors are
blocked to prevent unintended rotation.
2 2
5