Safety; General Warning - Danfoss VLT AQUA Drive FC 200 Operating Instructions Manual

Safety

2 Safety
2.1.1 Safety Note
WARNING
The voltage of the frequency converter is dangerous
whenever connected to mains. Incorrect installation of the
motor, frequency converter or fieldbus may cause damage
to the equipment, serious personal injury or death.
Consequently, the instructions in this manual, as well as
national and local rules and safety regulations, must be
complied with.
Safety Regulations
1. The frequency converter must be disconnected
from mains if repair work is to be carried out.
Check that the mains supply has been discon-
nected and that the necessary time has passed
before removing motor and mains plugs.
2. The [Off/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.
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 [ETR trip] (default value) or data value [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. Note that the frequency converter has voltage
inputs other 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.
Installation at High Altitudes
WARNING
At altitudes above 3 km, contact Danfoss regarding PELV
VLT AQUA Low Harmonic Drive Operating Instructions
Warning against Unintended Start
1. The motor can be brought to a stop by means of digital
commands, bus commands, references or a local stop,
while the frequency converter is connected to mains. If
personal safety considerations make it necessary to ensure
that no unintended start occurs, these stop functions are
not sufficient.
2. While parameters are being changed, the motor may
start. Consequently, the stop key [Reset] must always be
activated; following which data can be modified.
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.
Touching the electrical parts may be fatal - even after the
equipment has been disconnected from mains.
Also make sure that other voltage inputs have been
disconnected, such as external 24 V DC, load sharing
(linkage of DC intermediate circuit), as well as the motor
connection for kinetic back up.

2.1.2 General Warning

Touching the electrical parts may be fatal - even after the
equipment has been disconnected from mains.
Also make sure that other voltage inputs have been
disconnected, (linkage of DC intermediate circuit), as well
as the motor connection for kinetic back-up.
Before touching any potentially live parts of the frequency
converter, wait at least as follows:
380-480 V, 132-200 kW, wait at least 20 minutes.
380-480 V, 250-630 kW, wait at least 40 minutes.
Shorter time is allowed only if indicated on the nameplate
for the specific unit. Be aware that there may be high
voltage on the DC links even when the Control Card LEDs
are turned off. A red LED is mounted on a circuit board
inside both the frequency converter and the active filter to
indicate the DC bus voltages. The red LED will stay lit until
the DC link is 50 V DC or lower.
®
MG20T202 - VLT is a registered Danfoss trademark
WARNING
WARNING
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