Danfoss VLT Compact Starter MCD 201, Installation Manual

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2 Safety
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.
2.1 Qualified Personnel
Correct and reliable transport, storage, installation,
operation, and maintenance are required for the trouble-
free and safe operation of the soft starter. Only qualified
personnel are allowed to install or operate this equipment.
Qualified personnel are defined as trained staff, who are
authorized to install, commission, and maintain equipment,
systems, and circuits in accordance with pertinent laws and
regulations. Also, the qualified personnel must be familiar
with the instructions and safety measures described in this
installation guide.
2.2 General Warnings
WARNING
ELECTRICAL SHOCK HAZARD
VLT
®
Soft Starter MCD 500 contains dangerous voltages
when connected to mains voltage. Only a qualified
electrician should carry out the electrical installation.
Improper installation of the motor or the soft starter can
cause death, serious injury, or equipment failure. Follow
the guidelines in this manual and local electrical safety
codes.
Models MCD5-0360C ~ MCD5-1600C:
Treat the busbar and heat sink as live parts whenever
the unit has mains voltage connected (including when
the soft starter is tripped or waiting for a command).
WARNING
PROPER GROUNDING
Disconnect the soft starter from mains voltage before
carrying out repair work.
It is the responsibility of the person installing the soft
starter to provide proper grounding and branch circuit
protection according to local electrical safety codes.
Do not connect power factor correction capacitors to the
output of the VLT
®
Soft Starter MCD 500. If static power
factor correction is employed, it must be connected to
the supply side of the soft starter.
WARNING
IMMEDIATE START
In auto-on mode, the motor can be controlled remotely
(via remote inputs) while the soft starter is connected to
mains.
MCD5-0021B ~ MCD5-961B:
Transportation, mechanical shock, or rough handling
may cause the bypass contactor to latch into the On
state.
To prevent the motor from starting immediately on first
commissioning or operation after transportation:
•
Always ensure that the control supply is applied
before the power.
•
Applying control supply before power ensures
that the contactor state is initialized.
WARNING
UNINTENDED START
When the soft starter is connected to AC mains, DC
supply, or load sharing, 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 with 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 condition.
To prevent unintended motor start:
•
Press [Off/Reset] on the LCP before
programming parameters.
•
Disconnect the soft starter from the mains.
•
Completely wire and assemble the soft starter,
motor, and any driven equipment before
connecting the soft starter to AC mains, DC
supply, or load sharing.
Safety Installation Guide
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