YASKAWA CIPR-GA50C series Technical Manual page 173

5.2 European Standards
Enable the Internal EMC Filter
On drive models 2xxxE, BxxxE, and 4xxxE, move the screw or screws to turn ON and OFF (enable and disable)
the EMC filter.
Make sure that the symmetric grounding network is applied, and install the screw or screws in the ON position to
enable the built-in EMC filter in compliance with the EMC Directive. The EMC filter switch screw or screws are
installed in the OFF position by default.
WARNING! Electrical Shock Hazard. Disconnect all power to the drive, wait for the time specified on the warning label, and
check the drive for dangerous voltages before you remove covers or touch EMC filter screws. If you touch the screws when
there are dangerous voltages, it will cause serious injury or death.
WARNING! Electrical Shock Hazard. Do not remove covers or touch circuit boards while the drive is energized. If you touch the
internal components of an energized drive, it can cause serious injury or death.
WARNING! Electrical Shock Hazard. Ground the neutral point on the power supply of drive models 2xxxE, BxxxE, and 4xxxE to
comply with the EMC Directive before you turn on the EMC filter or if there is high resistance grounding. If the EMC filter is
switched ON without the neutral point being grounded or if there is high resistance grounding, it can cause death or serious
injury.
WARNING! Electrical Shock Hazard. Connect the ground cable correctly. If you touch electrical equipment that is not grounded,
it can cause serious injury or death.
NOTICE: To disable the internal EMC filter, move the screws from ON to OFF and then tighten to the specified torque. If you
fully remove the screws or tighten the screws to an incorrect torque, it can cause drive failure.
NOTICE: Move the EMC switch screw or screws to the OFF position for networks that are not symmetrically grounded. If the
screws are not in the correct position, it can cause damage to the drive.
Figure 5.7 Symmetric Grounding
NOTICE: When you use the drive with a non-grounding, high-resistance grounding, or asymmetric-grounding network, put the
EMC Filter screw or screws in the OFF position to disable the built-in EMC filter. Failure to obey the instructions can damage the
drive.
Table 5.8 shows asymmetric grounding networks.
Table 5.8 Asymmetric Grounding
Type of Grounding Diagram
Grounded at the corner of the delta connection
Grounded at the middle of the side
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YASKAWA SIEPC71061753A GA500 Technical Manual 173