￭
Measuring the insulation resistance of the brake resistor circuit
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or
death, or damage to the equipment can occur. If you are not a qualified
electrical professional, do not do installation, commissioning or
maintenance work.
1. Stop the drive and do the steps in section Electrical safety
precautions (page 16) before you start the work.
2. Make sure that the resistor cable is connected to the resistor and disconnected
from the drive output terminals.
3. At the drive end, connect the R+ and R- conductors of the resistor cable
together. Measure the insulation resistance between the conductors and the
PE conductor with a measuring voltage of 1000 V DC. The insulation resistance
must be more than 1 Mohm.
R-
R+
ohm
PE
1000 V DC,
> 1 Mohm
Grounding system compatibility check
￭
EMC filter
The drive ACS180-04S-...-1/4 has an internal EMC filter as standard. You can install
a drive that has the internal EMC filter connected to a symmetrically grounded
TN-S system (center-grounded wye). For other systems, refer to Compatibility of
EMC filter with the grounding system (page 64).
Note: If you disconnect the EMC filter, the electromagnetic compatibility of the
drive decreases.
Electrical installation 63
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