Safety; High Voltage Warning - Danfoss FC 100 Series Operating Instructions Manual

Safety

2 Safety
2.1.1 Symbols
Symbols used in this manual:
NOTE
Indicates something to be noted by the reader.
Indicates a general warning.
Indicates a high-voltage warning.
✮
Indicates default setting

2.1.2 High Voltage Warning

The voltage of the frequency converter and the MCO
101 option card is dangerous whenever it is connected
to mains. Incorrect installation of the motor or frequen-
cy converter may causedeath, serious injury or damage
to the equipment. Consequently, it is essential to
comply with the instructions in this manual as well as
local and national rules and safety regulations.
2.1.3 Safety Note
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.
®
VLT HVAC Drive Operating Instructions
Safety Regulations
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MG.11.AD.02 - VLT is a registered Danfoss trademark
The frequency converter must be disconnected 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.
The [STOP/RESET] key on the LCP of the frequency
converter does not disconnect the equipment from
mains and is thus not to be used as a safety switch.
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.
The earth leakage currents are higher than 3.5 mA.
Protection against motor overload is set by
par. 1-90 Motor Thermal Protection. If this function is
desired, set par. 1-90 Motor Thermal Protection to
data value [ETR trip] (default value) or data value
[ETR warning]. Note: The function is initialized 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.
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
passed before removing motor and mains plugs.
Please note that the frequency converter has more
voltage inputs than L1, L2 and L3, when load sharing
(linking of DC intermediate circuit) and external 24 V
DC have been installed. Check that all voltage inputs
have been disconnected and that the necessary time
has passed before commencing repair work.
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