Specifications

2 Product Overview
2.1 Safety
2.1.1 Safety Note
WARNING
DANGEROUS VOLTAGE
The voltage of the frequency converter is dangerous
whenever connected to mains. Incorrect installation of
the motor, frequency converter or fieldbus may cause
death, serious personal injury or damage to the
equipment. Consequently, the instructions in this
manual, as well as national and local rules and safety
regulations, must be complied with.
Safety Regulations
1. Disconnect the frequency converter from mains, if
repair work is to be carried out. Check that the
mains supply has been disconnected and that the
necessary time has passed before removing
motor and mains plugs.
2. The [Off/Reset] key does not disconnect the
equipment from mains and is thus not to be used
as a safety switch.
3. Correct protective earthing of the equipment
must be established, the user must be protected
against supply voltage, and the motor must be
protected against overload in accordance with
applicable national and local regulations.
4. The earth leakage currents are higher than 3.5
mA.
5. Protection against motor overload is set by
1-90 Motor Thermal Protection. If this function is
desired, set 1-90 Motor Thermal Protection to data
value [4], [6], [8], [10] ETR trip] or data value [3],
[5], [7], [9]ETR warning.
Note: The function is initialised at 1.16 x rated
motor current and rated motor frequency. For the
North American market: The ETR functions
provide class 20 motor overload protection in
accordance with NEC.
6. Do not remove the plugs for the motor and
mains supply while the frequency converter is
connected to mains. Check that the mains supply
has been disconnected and that the necessary
time has elapsed before removing motor and
mains plugs.
7. Check that all voltage inputs have been discon-
nected and that the necessary time has elapsed
before commencing repair work.
Installation at high altitudes
CAUTION
At altitudes above 2 km, contact
Danfoss regarding PELV.
WARNING
UNINTENDED START
1. The motor can be brought to a stop with digital
commands, bus commands, references or a
local stop, while the frequency converter is
connected to mains. These stop functions are
not sufficient to avoid unintended start and
thus prevent personal injury.
2. While parameters are being changed, the motor
may start. Consequently, always activate the
stop key [Off/Reset] before modifying data.
3. A motor that has been stopped may start if
faults occur in the electronics of the frequency
converter, or if a temporary overload or a fault
in the supply mains or the motor connection
ceases.
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input power. Installation, start
up, and maintenance should be performed by qualified
personnel only. 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.
Product Overview
VLT
®
HVAC Basic Drive FC 101 Design Guide
MG18C502 - Rev. 2013-09-06 9
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