Mitsubishi Electric MELFA RV-SD Series Installation Description page 73

Installation
Grounding the robot arm
Use a grounding cable with a minimum cross-section of 2.0 mm² (RV-2SD/RV-2SQ/RH-3SDHR/
RH-3SQHR) or 3.5 mm² (all other models).
Check the area around the grounding screw (A) for deposits and remove any using a file.
Fix the grounding cable with the grounding screw (M4 x 10) to the grounding connection of the
robot arm (see here Fig. 3-24).
grounding screw
grounding connection with at least 2.0 mm²
(not included in scope of delivery)
Fig. 3-24: Grounding the robot arm
SD-/SQ series
M4 x 10
grounding connection with at least
2.0 mm² (RV-2SD/RV-2SQ) or 3.5 mm²
(all other models).
(not included in scope of delivery)
Articulated arm robot
grounding screw
M4 x 10
A
SCARA robot
RH-3SDHR and RH-3SQHR
robot arm
grounding screw
M4 x 10
SCARA robot
RH-6SDH/12SDH/20SDH and
RH-6SQH/12SQH/20SQH
Grounding the robot system
R001300E, R001457E
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