YASKAWA GA700 Technical Manual page 197

4.2 European Standards
Enabling the Internal EMC Filter
To turn on (enable) and off (disable) the EMC filter built in the drive models 2xxxB, 2xxxC, 4xxxB, and 4xxxC,
change the mounting position of the screw.
WARNING! Electrical Shock Hazard. Confirm that the power to the drive is OFF and the CHARGE LED light is off before
moving the EMC switch screws. Failure to comply could cause death or serious injury.
WARNING! Electrical Shock Hazard. Do not remove covers or touch the circuit boards while the power is on. Failure to comply
could cause death or serious injury.
WARNING! Electrical Shock Hazard. Ensure that the neutral point on the power supply of this product (model number 2xxxB/C,
4xxxA/B/C) is grounded for compliance with the EMC Directive before EMC filter is switched ON or if there is high resistance
grounding. Failure to comply could cause death or serious injury.
WARNING! Electrical Shock Hazard. Connect the ground cable correctly. Failure to comply could cause death or serious injury.
NOTICE: Do not completely remove the screws or tighten the screws to an incorrect torque when disabling the EMC filter.
Failure to comply could cause drive failure.
NOTICE: Move the EMC switch screws to the OFF position for networks that are not symmetrically grounded. Failure to comply
could cause damage to the drive.
To make this product comply with the EMC Directive, confirm that the symmetric grounding network is applied,
and mount the screw of the EMC filter switch to the ON position to turn on (enable) the built-in EMC filter. The
screw of the EMC filter switch is set to OFF position by default.
Figure 4.7 Symmetric Grounding
NOTICE: When using a drive with a non-grounding network, high resistance grounding, asymmetric grounding network, place
the screw for the EMC filter switch in the OFF position and disable the built-in EMC filter. Failure to follow the instructions may
damage the drive.
Table 4.8 shows the asymmetric grounding network.
Table 4.8 Asymmetric Grounding
Type of Grounding Description
Grounding on a corner of the delta connection
Grounding on a line of the delta connection
4
Grounding on an end of the single-phase connection
Thee-phase variable transformer without neutral grounding
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual 197