Safety; Safety Symbols; Qualified Personnel; Safety Precautions - Danfoss VLT AQUA Drive FC 202 Operating Instructions 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, 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 qualified personnel must be
familiar with the instructions and safety measures
described in these operating instructions.

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.
•
Installation, start-up, and maintenance must be
performed by qualified personnel only.
MG20MC22
Operating Instructions
WARNING
UNINTENDED START
When the adjustable frequency drive is connected to AC
line power, 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. The motor can start via an external
switch, a serial bus command, an input reference signal
from the LCP, 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.
Danfoss A/S © 01/2015 All rights reserved.
Disconnect the adjustable frequency drive from
line power.
Press [Off/Reset] on the LCP before
programming parameters.
Fully wire and assembly the adjustable
frequency drive, motor, and any driven
equipment before connecting the adjustable
frequency drive to AC line power, DC supply, or
load sharing.
Stop the motor.
Disconnect the 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.
2 2
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