Grounding Procedures; Grounding Methods - Mitsubishi Electric RH-3FH Series Instruction Manual

2Unpacking to Installation

2.2.4 Grounding procedures

(1) Grounding methods

Controller
and
Robot arm
personal
computer
(a) Dedicated grounding
(Optimum)
Fig.2-5 ： Grounding methods
(2) Grounding procedures
M4×10
ばね座金
Spring washer
平座金
Plain washer
本体接地用ケーブル (AWG #11（3.5mm
Robot grounding cable (AWG#11 (4.2mm
（お客様にてご手配ください）
(Prepared by customer)
Fig.2-6 ： Connecting the grounding cable
Installation
2-13
Controller
and
Robot arm Robot arm
personal
computer
(c) Common grounding
(b) Common grounding
(Good)
1) There are three grounding methods as shown in
Fig. 2-5, but the dedicated grounding
should be used for the robot arm and controller
when possible. (Refer to the separate " Controller
Controller
and
Setup, Basic Operation and Maintenance" for
personal
computer
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
the grounding wire. The grounding point should be
(Normal)
as close to the robot arm and controller as possi -
ble, and the length of the grounding wire should
be short.
1) Prepare the grounding cable (AWG#11(4.2mm
more) and robot side installation screw and washer.
2) If there is rust or paint on the grounding screw sec -
tion (A), remove it with a file, etc.
3) Connect the grounding cable to the grounding screw
section.
A
2
）以上）
2
) or more）
(Fig. 2-5
2
) or more stranded wire for
2
) or
(a))