AKD 2800
Introduction to AKD
2800
■
High voltage warning
The voltage of the frequency converter
is dangerous whenever the converter is
connected to mains. Incorrect fitting of the
motor or frequency converter may cause damage to the
equipment, serious injury or death. Consequently, it is
essential to comply with the instructions in this manual
as well as local and national rules and safety regulations.
■
These rules concern your safety
1. The frequency converter must be disconnected
from the mains if repair work is to be carried
out. Check that the mains supply has been
disconnected and that the prescribed time has
passed before removing motor and mains plugs.
2. The [STOP/RESET] key on the control panel of
the frequency converter does not disconnect
the equipment from mains and is thus not to
be used as a safety switch.
3. The unit must be properly connected to the
earth, the user must be protected against the
supply voltage and the motor must be protected
against overloading pursuant to prevailing
national and local regulations.
4. The earth leakage currents are higher than 3.5 mA.
5. Protection against motor overload is not included
in the factory setting. If this function is required,
set parameter 128
Motor thermal protection
to
data value
ETR trip
or data value
ETR warning
. For
the North American market: The ETR functions
provide overload protection of the motor, class
20, 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 prescribed time has
passed before removing motor and mains plugs.
7. Note that the frequency converter has more voltage
inputs than L1, L2 and L3 when the DC bus
terminals are used. Check that all voltage inputs
are disconnected and that the prescribed time has
passed before repair work is commenced.
■
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
[STOP/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.
195NA300.10
Warning:
It can be extremely dangerous to touch the electrical parts
even when the mains supply has been disconnected.
Also ensure that other voltage inputs are disconnected
from load sharing through the DC bus.
Wait at least 4 minutes after the input power has been
removed before servicing the drive.
MG.28.H2.02 -
9