YASKAWA CR700

15 European Standards
94 YASKAWA TOEPC71061723A YASKAWA AC Drive CR700 Quick Start Guide
Enable the Internal EMC Filter
On drive models 2xxxB and 4xxxB, move the screw or screws to turn ON and OFF (enable and disable) the EMC
filter.
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 2xxxB/C and 4xxxB/C
to comply with the EMC Directive before you turn on the EMC filter. 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.
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.
Figure 15.7 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 15.8 shows asymmetric grounding networks.
Table 15.8 Asymmetric Grounding
Type of Grounding Diagram
Grounded at the corner of the delta connection
Grounded at the middle of the side