Motor; Floating Network - ABB ACS 400 User Manual

H Motor
Check the compatibility of the motor. By default, the motor must be a three-phase induction motor,
with U from 380 to 480 V and f either 50 Hz or 60 Hz. If the motor values differ from these, the
N N
group 99 parameter values must be changed.
The motor nominal current, I , must not exceed the nominal output current of the ACS 400, I in
2N
N
constant torque applications or I in variable torque applications (See G and R).
2NSQ
Warning! Ensure the motor is suitable for use with the ACS 400. The ACS 400 must be
installed by a competent person. If in doubt, contact your supplier.
I Floating Network
Make sure that no excessive emission is propagated to neighbouring low voltage networks. In
some cases, the natural suppression in transformers and cables is sufficient. If in doubt, the supply
transformer with static screening between the primary and secondary windings can be used.
Note! Remove both grounding screws otherwise you may cause danger or damage the unit.
Location of the grounding screws is shown in Figure 15 and Figure 16.
Note! In IT networks do not use RFI filter. The mains becomes connected to earth through the filter
capacitors. In floating networks this may cause danger or damage the unit.
GND 1 GND 2
Figure 15 Removing the grounding screws from frame size R1 and R2 frequency converters.
GND 1 GND 2
Figure 16 Removing the grounding screws from frame size R3 and R4 frequency converters.
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