Yaskawa Sigma-II Large Capacity - Manual (Page 35)

3-4. Notes on control panel installation
Please note the differences of the electrical conduction state of the frame ground when using an
attachment to accommodate the differences of the installation hole size. An alarm may occur and the
machine may operate improperly because the amount of noise changes when the electrical conduction
state changes.
Control Panel Side
Servo Amplifier
Control Panel Side
Servo Amplifier
Attachment
The frame ground of the control
panel and servo amplifier conduct
through the installation screw.
When painting and/or surface treatment is
given to the attachment for rust prevention,
electrical conduction between the attachment
and control panel may be impossible.
Conducting Part