YASKAWA GA50U Series

14 European Standards
154 YASKAWA TOEPC71061752B GA500 Drive Installation & Primary Operation
WARNING
Electrical Shock Hazard. Ground the neutral point on the power supply of drive models
BxxxE, 2xxxE, and 4xxxE to comply with the EMC Directive before you turn on the EMC filter or if there is high
resistance grounding. If you turn ON the EMC filter, but you do not ground the neutral point, it can cause serious
injury or death.
Enable the Internal EMC Filter
On drive models BxxxE, 2xxxE, 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
BxxxE, 2xxxE, and 4xxxE to comply with the EMC Directive before you turn on the EMC filter or if there is high
resistance grounding. If you turn ON the EMC filter, but you do not ground the neutral point, it can cause serious
injury or death.
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 14.7 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 14.9 shows asymmetric grounding networks.