Motoman PX2750, Manual

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6.2 Robot Controller
6-4
HW0480633
6.2
Robot Controller
The robot controller has a built-in microcomputer that controls all motion of the robot by saving
motion signals when teaching and sending these signals to the manipulator. The power unit
that supplies power to the manipulator is also built into the robot controller.
6.3
Pneumatic Unit
The pneumatic unit supplies protective air or gas to the manipulator to prevent explosive gas
from entering the manipulator. Usually, the unit is attached to the side of the robot controller.
The circuit diagram and dimensions of the unit are shown in " Fig. 11 Pneumatic Unit Air Cir-
cuit " and " Fig. 12 Pneumatic Unit External View ". Set the air pressure so that the pressure
shown on the pressure gauge of each pressure reducing valve will be within the pressure
ranges shown in " Fig. 11 Pneumatic Unit Air Circuit ".
The power supply of the robot controller is 200/220 VAC. Be sure to turn OFF the primary
power supply of the controller before starting maintenance.
Failure to observe this warning may result in electric shock.
The pneumatic unit is used to provide a pressurized explosion-proof barrier for the manip-
ulator. Because the barrier is only ensured when the air supply is within the recom-
mended pressure range, a lower air pressure will reduce the barrier’s efficiency, and a
higher air pressure will damage the pneumatic unit. Be sure to keep the air pressure
within the specified range.
WARNING
CAUTION