Using Servomotors With Holding Brakes - YASKAWA E Series Product Manual

8.1 Installation Conditions

8.1.5 Using Servomotors with Holding Brakes

8.1.5

Using Servomotors with Holding Brakes

This section gives precautions for using Servomotors with Holding Brakes
• The holding brakes have a limited service life. Although the quality and reliability of a holding
brake has been sufficiently confirmed, stress factors, such as emergency braking, can results
in problems in the holding operation. In applications in which safety is a concern, such as for
a load falling on a vertical axis, determine if safety measures are required on the machine,
such as adding a redundant fall-prevention mechanism.
• For a Servomotor with a Holding Brake, there is a small amount of rotational play in the motor
shaft (1.5° max. initially) because of the backlash in the holding brake, even when the brake
power is OFF.
• For a Servomotor with a Holding Brake, the brake's rotating disc may sometimes generate
murmur from friction during acceleration, stopping, and low-speed operation.
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