About Brake - CKD AX Series Instruction Manual

2
INSTALLATION
6)

About Brake

[H]
(1) About Built-in Pneumatic Brake
➀ The AX5000 and AX8000 series with built-in brake are provided with air clamp type
brake and a built-in air valve. Braking requires supply of clean compressed air to the
supply connector at the pressure of 0.5MPa. (Do not supply the pressure exceeding
0.7MPa.) The air valve requires power supply of 24V DC±10% to CN3. The valve
control shares power with I/O power.
NC codes (M68 and M69) are used in the NC program to apply or release the brake.
For details, refer to Chapter 3. "SYSTEM CONFIGURATION AND WIRING."
Fig 2.8 shows the recommended air circuit. (Make sure that no lubrication is
introduced using a lubricator.)
➁ The built-in pneumatic brake clamps the output axis if compressed air is supplied
with the power turned off. The retention force of the output axis is the brake torque
(air pressure: 0.5MPa) specified in Tables 14.6 and 14.7. If a larger torque is added,
slippage is caused at the brake, causing the output axis to rotate. As well, if the air
pressure drops or supply of compressed air is stopped, a sufficient retention force is
not maintained. To fix the output axis securely due to maintenance or the like, do not
rely on merely the built-in brake but take other measures to mechanically fix the
output axis.
[SMB-14E]
Discontinue
Air dryer Air filter 5µm
Fig. 2.8 Recommended Air Circuit
— 2-10 —
Pressure reducing valve
2
0.5MPa (5.1kgf/cm )