Mitsubishi Electric SD Series Installation Description page 66

Connection of the connection cable
Connection of robot CPU Q172DRCPU to drive unit DU3
ATTENTION:
E
● Always place the protective cap on the SSCNET-III connection when no cable is connected.
Otherwise, soiling may lead to an impairment in the transmission and to malfunctions.
● Do not remove the SSCNET-III cable as long as the power supply of the CPU system or the
drive unit is switched on.
Never look directly into the light emitted from the robot CPU or the SSCNET-III connections
of the drive unit, or into the open end of the SSCNET-III cable. The light emitted from these
complies with the IEC60825-1 standard of laser class 1 and may result in an irritation to the
eyes if viewed directly.
DU3 drive unit
CNDISP
CON3
DCOUT
Fig. 4-4: Connection of robot CPU to drive unit DU2
NOTE Connect the shielding of the TU cable with a grounding clamp to the to the housing of the drive
unit to prevent electromagnetic disturbances. Connect the shielding on the side of the robot CPU
with a grounding clamp to the ground potential.
4 - 4
Booster unit 1
Robot CPU interface unit
Booster unit 2
OPT1A
Cable bushing
(floor of housing)
Robot CPU
EMI
EMI cable for robot
2Q-EMICBL 10M
Ferrite core
PLC power
supply
CN1
SSCNET-III cable
MR-J3BUS 10M-A
Ferrite
Remove 20 to 30 mm of wire insulation from the TU cable and
connect the shielding with a grounding clamp to the housing
of the drive unit.
Wire insulation
20–30 mm
Shielding
Connection
DISP I/F
DISP cable for robot
2Q-DISPCBL 10M
Rack
TU I/F
TU cable for robot
2Q-TUCBL 10M
2 ferrite cores
Robot CPU
Q172DRCPU
Wire insulation
R001510E