Grounding Procedures; Grounding Methods - Mitsubishi Electric RH-FRH Series Instruction Manual

2Unpacking to Installation

2.2.4 Grounding procedures

(1) Grounding methods

1) There are three grounding methods as shown in
used for the robot arm and controller when possible. (Refer to the separate " Controller Setup, Basic
Operation and Maintenance" for details on the controller grounding.)
2) Use Class D grounding (grounding resistance 100Ω or less). Dedicated grounding separated from the other
devices should be used.
3) Use a AWG#11(4.2mm
close to the robot arm and controller as possible, and the length of the grounding wire should be short.
Fig.2-8 ： Grounding methods
(2) Grounding procedures
1) Prepare the grounding cable (AWG#11(4.2mm
2) If there is rust or paint on the grounding screw section (A), remove it with a file, etc.
3) Connect the grounding cable to the grounding screw section.
<RH-3FRH/6FRH/12FRH/20FRH series>
M4x10
Spring washer
Plain washer
Robot grounding cable
(Prepared by customer)
Fig.2-9 ： Connecting the grounding cable
Installation
2-19
2
) or more stranded wire for the grounding wire. The grounding point should be as
2
Spring washer
Plain washer
Fig. 2-8, but the dedicated grounding
) or more) and robot side installation screw and washer.
<RH-3FRHR series>
M4x10
Robot grounding cable
(Prepared by customer)
(Fig. 2-8 (a)) should be