Warnings - Danfoss MCD500 Service Manual

Warnings

1 Warnings
When reading this manual you will come across different
symbols that require special attention. The symbols used are
the following:
NOTE
Indicates something to be noted by the reader
CAUTION
Indicates a general warning
WARNING
Indicates a high voltage warning
The examples and diagrams in this manual are included
solely for illustrative purposes. The information contained in
this manual is subject to change at any time and without
prior notice. In no event will responsibility or liability be
accepted for direct, indirect or consequential damages
resulting from the use or application of this equipment.
NOTE
Before changing any parameter settings, ensure that the
current parameter set is saved to an internal file. Refer to
MCD 500 Operating Instructions, MG.17.KX.YY, for more
information.
WARNING
WARNING - ELECTRICAL SHOCK HAZARD
MCD 500 soft starters contain dangerous voltages when
connected to mains voltage. Only a competent electrician
should carry out the electrical installation. Improper instal-
lation of the motor or the soft starter may cause equipment
failure, serious injury or death. Follow this manual and local
electrical safety codes.
Models MCD5-0360C - MCD5-1600C: The bus bar and
heatsink are live while the unit is operating (starting, running
or stopping). If the starter is installed without a main
contactor, the bus bar and heatsink are live whenever mains
voltage is connected (including when the starter is ready or
tripped).
MCD 500 Service Manual
Disconnect the soft starter from mains voltage before
carrying out repair work.
It is the responsibility of the user or 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 MCD 500 soft starters. If static power factor
correction is employed, it must be connected to the supply
side of the soft starter.
MCD5-0021B - MCD5-0105B: After transportation,
mechanical shock or rough handling there is possibility that
the bypass contactor may have latched into the on state. To
prevent the possibility of the motor starting immediately, on
first commissioning or operation after transportation, always
ensure that the control supply is applied before the power,
so that the contactor state is initialised.
In Auto On mode, the motor can be stopped using digital or
bus commands while the soft starter is connected to mains.
These stop functions are not sufficient to avoid unintended
start.
A motor that has been stopped may start if faults occur in
the electronics of the soft starter, or a temporary fault in the
supply mains or the motor connection ceases.
CAUTION
Use the auto-start feature with caution. Read all the notes
related to auto-start before operation.
®
MG.17.L4.02 - VLT is a registered Danfoss trademark
WARNING
CAUTION
Equipment containing electrical
components may not be disposed of
together with domestic waste.
It must be collected separately as
electrical and electronic waste
according to local and currently valid
legislation.
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