Safety - Danfoss VLT AutomationDrive FC 302 Operating Instructions Manual

Safety

2 Safety
2 2
2.1 Safety
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input power. Qualified personnel
only should perform installation, start up, and
maintenance. Failure to perform installation, start up,
and maintenance by qualified personnel could result in
death or serious injury.
WARNING
UNINTENDED START
When the frequency converter is connected to AC mains,
the motor may start at any time. The frequency
converter, motor, and any driven equipment must be in
operational readiness. Failure to be in operational
readiness when the frequency converter is connected to
AC mains could result in death, serious injury,
equipment, or property damage.
WARNING
DISCHARGE TIME
Frequency converters contain DC-link capacitors that can
remain charged even when the frequency converter is
not powered. To avoid electrical hazards, disconnect AC
mains, any permanent magnet type motors, and any
remote DC-link power supplies, including battery back-
ups, UPS, and DC-link connections to other frequency
converters. Wait for the capacitors to fully discharge
before performing any service or repair work. The
amount of wait time is listed in the Discharge Time table.
Failure to wait the specified time after power has been
removed before doing service or repair could result in
death or serious injury.
Voltage [V]
3x400
3x400
3x500
3x500
3x525
3x525
3x690
3x690
Table 2.1 Discharge Time
8
Operating Instructions
Power range [kW] Minimum waiting time
[min]
90-250
110-315
110-315
132-355
75-250
90-315
90-250
110-315
Danfoss A/S © Rev. 2014-02-20 All rights reserved.
Table 2.2 Approvals
The frequency converter complies with UL508C thermal
memory retention requirements. For more information,
refer to the section Motor Thermal Protection in the Design
Guide.
NOTICE
Imposed limitations on the output frequency
(due to export control regulations):
From software version 6.72 the output frequency of the
frequency converter is limited to 590 Hz. Software
versions 6x.xx also limit the maximum output frequency
to 590 Hz, but these versions cannot be flashed, i.e.
neither downgraded nor upgraded.
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MG34U302