Safety; Safety Symbols; Qualified Personnel; Safety Precautions - Danfoss VLT AutomationDrive FC 360 Quick Manual

Safety

2 Safety

2.1 Safety Symbols

The following symbols are used in this document:
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 frequency converter. Only
qualified personnel are allowed to install or operate this
equipment.
Qualified personnel are defined as trained staff, who are
authorised to install, commission, and maintain equipment,
systems, and circuits in accordance with pertinent laws and
regulations. Additionally, the personnel must be familiar
with the instructions and safety measures described in this
manual.

2.3 Safety Precautions

WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to perform installation, start-up, and maintenance
by qualified personnel can result in death or serious
injury.
•
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
MG06A602
Quick Guide
WARNING
UNINTENDED START
When the frequency converter is connected to AC mains,
DC supply, or load sharing, the motor may start at any
time. Unintended start during programming, service, or
repair work can result in death, serious injury, or
property damage. Start the motor with an external
switch, a fieldbus command, an input reference signal
from the local control panel (LCP), via remote operation
using MCT 10 software, or after a cleared fault condition.
To prevent unintended motor start:
•
•
•
WARNING
DISCHARGE TIME
The frequency converter contains DC-link capacitors,
which can remain charged even when the frequency
converter is not powered. Failure to wait the specified
time after power has been removed before performing
service or repair work, could result in death or serious
injury.
1.
2.
3.
Voltage [V]
380–480
High voltage may be present even when the warning LEDs are
off.
Table 2.1 Discharge Time
Danfoss A/S © 04/2015 All rights reserved.
Disconnect the frequency converter from the
mains.
Press [Off/Reset] on the LCP before
programming parameters.
Ensure that the frequency converter is fully
wired and assembled when it is connected to
AC mains, DC supply, or load sharing.
Stop the motor.
Disconnect AC mains, permanent magnet type
motors, and remote DC-link power supplies,
including battery back-ups, UPS, and DC-link
connections to other frequency converters.
Wait for the capacitors to discharge fully, before
performing any service or repair work. The
duration of waiting time is specified in Table 2.1.
Minimum waiting time (minutes)
4
0.37–7.5 kW
2 2
15
11–75 kW
7