Mitsubishi Electric RH-FRH Series Instruction Manual page 73

2) Fix the solenoid valve to the plate in the position indicated in
primary piping connection joints (P, R ports) are located on the right hand side, and fix it securely using the
M4 screws included (tightening torque: 1.39 to 1.89N ・ m).
3) Connect the connector (GR1, GR2) of solenoid valve with connector of robot arm side (GR1, GR2). Connect
with the same names. The hand output signal cables of the robot arm side are located close to where the
solenoid valve is installed and are tied up with cable tie. Pull out and connect them to the connectors. Fix
the connectors so that they will not move along with the robot movement. (Refer to
tor protection when the option devices are
4) Connect the primary piping air hose (φ6). The air hoses are located close to where the solenoid valve is
installed and are tied up with cable tie. Cut the cable tie and connect them. Of the two air hoses, connect
the one marked "AIR IN" to the solenoid valve's P port, and the one marked "RETURN" to the R port.
Note) When connecting the RETURN air hose, be sure to remove the dust cap attached at the RETURN
joint on the robot base section. If the cap is not removed, exhaust air pressure will increase and
the solenoid valve may not operate properly.By connecting the exhaust air hose (φ6: customer
preparation) to this RETURN air joint, exhaust air from the solenoid valve is able to escape to the
designated point.
5) Connect the secondary piping air hose (φ4).
The optional hand curl tube, the hand internal wiring and piping set, or the air hose prepared by customer
can all be used, however when pulling the tip of the air hose out from the shaft please be sure to use the
optional hand internal wiring and piping set.
Connect the air hoses to solenoid valve port A and port B. Please refer to
necessary ports. Covers the unused solenoid valve joints with the plugs included.
Note) When pulling the tip of the air hose out from the shaft, please be sure to use the optional hand
internal wiring and piping set. Silicon grease to apply to friction points is included with the product
(please refer to
series)"). Further, when using the optional external wiring and piping box, the air hose can be
pulled out from the rear of the No. 2 arm (please refer to
Box (RH-3FRH/6FRH/12FRH/20FRH
6) If the hand output cable and the air hose have excess length, please tie the excess section by cable tie and
fix it to the plate. The plate have some holes for fixing the cable/hose with a cable tie.
Also, anchor the cables to the plate by a cable tie to prevent the cable connectors from moving freely.
Otherwise, the connectors may be damaged due to the impact of hitting devices near the connectors while
the robot is under operating condition.
7) Install securely the No.2 arm cover U as before with fixing screws (tightening torque: 1.39 to 1.89 Nm).
Note) The installation surface of the clean and the oil-mist specification covers is using sealing material.
In the event that the sealing material has been removed or has been bent or broken to the extent
that it cannot be return to the original form, be sure to replace the sealing material. Please inform
the dealer, if exchange is necessary.
The installing of the solenoid valve set is completed.
CAUTION
Page 84, "3.7 Hand internal wiring and piping set (RH-3FRH/6FRH/12FRH/20FRH
When installing the solenoid valve set, check that no cables are pinched and no air
hoses are bent.
Cable pinching may cause a break in a cable or damage of the solenoid valve cover. Air
hose bending may cause a malfunction of the solenoid valve.
Installing the solenoid valve set (RH-3FRH/6FRH/12FRH/20FRH series) 3-60
Fig. 3-1. Place it so that the solenoid valve's
installed").
Page 89, "3.8 External Wiring and Piping
series)").
3Installing the option devices
Page 91, "3.9 Connec -
Table 3-1 and connect to the