Mitsubishi RV-2F Series Instruction Manual page 51

3) Connect the AIR IN "1" mark secondary piping coupler to the A port <4> of the No. 1 solenoid valve <3> with
an air hose (φ4 approx. 250mm, prepared by customer.)
In the same manner, connect the AIR IN "2" mark secondary piping coupler to the B port 5 of the No. 1
solenoid valve.
For a double valve (1E-VD02), connect the following:
Connect the AIR IN "3" mark secondary coupler to the A port <7> of the No. 2 solenoid valve <6>.
Connect the AIR IN "4" mark secondary coupler to the B port <8> of the No. 2 solenoid valve <6>.
4) Connect the GR1 plug from the No. 1 solenoid valve <3> to the GR1 connector on the back of the robot arm.
Connect the GR2 plug from the No. 1 solenoid valve <3> to the GR2 connector on the back of the robot arm.
For a double valve (1E-VD02), connect the following:
Connect the GR3 plug from the No. 2 solenoid valve <6> to the GR3 connector on the back of the robot arm.
Connect the GR4 plug from the No. 2 solenoid valve <6> to the GR4 connector on the back of the robot arm.
3Installing the option devices
Installing the solenoid valve set 3-42