Warning against unintended start
1.
The motor can be stopped with digital
commands, bus commands, references or a local
stop, while the frequency converter is connected
to mains. If personal safety considerations (e.g.
risk of personal injury caused by contact with
moving machine parts following an unintentional
start) make it necessary to ensure that no
unintended start occurs, these stop functions are
not sufficient. In such cases the mains supply
must be disconnected.
2.
The motor may start while setting the
parameters. If this means that personal safety
may be compromised (e.g. personal injury caused
by contact with moving machine parts), motor
starting must be prevented, for instance by
secure disconnection of the motor connection.
3.
A motor that has been stopped with the mains
supply connected, may start if faults occur in the
electronics of the frequency converter, through
temporary overload or if a fault in the power
supply grid or motor connection is remedied. If
unintended start must be prevented for personal
safety reasons (e.g. risk of injury caused by
contact with moving machine parts), the normal
stop functions of the frequency converter are not
sufficient. In such cases the mains supply must be
disconnected.
4.
Control signals from, or internally within, the
frequency converter may in rare cases be
activated in error, be delayed or fail to occur
entirely. When used in situations where safety is
critical, e.g. when controlling the electromagnetic
brake function of a hoist application, these
control signals must not be relied on exclusively.
WARNING
High Voltage
Touching the electrical parts may be fatal - even after the
equipment has been disconnected from mains.
Make sure that all voltage inputs have been disconnected,
including load sharing (linkage of DC intermediate circuit),
as well as motor connection for kinetic back up.
Systems where frequency converters are installed must, if
necessary, be equipped with additional monitoring and
protective devices according to the valid safety regulations,
e.g law on mechanical tools, regulations for the prevention
of accidents etc. Modifications on the frequency converters
by means of the operating software are allowed.
NOTE
Hazardous situations shall be identified by the machine
builder/ integrator who is responsible for taking necessary
preventive means into consideration. Additional
monitoring and protective devices may be included, always
according to valid national safety regulations, e.g. law on
mechanical tools, regulations for the prevention of
accidents.
WARNING
The DC link capacitors remain charged after power has
been disconnected. Be aware that there may be high
voltage on the DC link. To avoid electrical shock hazard,
disconnect the frequency converter from mains before
carrying out maintenance. When using a PM-motor, make
sure it is disconnected. Before doing service on the
frequency converter wait at least the amount of time
indicated below:
Voltage
[V]
Minimum waiting time [minutes]
4
15
380-480
0.37-7.5 kW
11-75 kW
Table 1.2 Discharge Time
1.3.1 Disposal Instruction
Equipment containing electrical
components may not be disposed of
together with domestic waste.
It must be separately collected with
electrical and electronic waste according
to local and currently valid legislation.
1.4 Software Version
Design Guide
Software version: 1.0x
This Design Guide can be used for all FC 360 frequency
converters with software version 1.0x.
The software version number can be seen from
15-43 Software
Version
.
Introduction
VLT
®
AutomationDrive FC 360 Design Guide
MG06B202 - VLT
®
is a registered Danfoss trademark
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