5 Operation
58 SD780 Series Servo Technical Manual
2.
Stopping modes for type 2 alarms
Type 2 alarms can select zero speed stop in addition to the servo OFF method and type 1 alarm
stop method. See the description of parameter Pn053 for the torque limit at zero speed stop.
5.1.5 Electromagnetic Brake
A holding brake is a brake used to hold the position of the movable part of the machine when the
Servo unit is turned OFF so that movable part does not move due to gravity or external forces.
Holding brakes are built into servomotors with brakes. Please use it as shown below.
Vertical Axis Shaft with External Force Applied
Holding brake
Prevents the moving part from
falling due to gravity when the
power supply is OFF.
Moving part of machine.
External force servo motor
Servo motor Moving part of machine
Prevents the moving part from moving
due to an external force.
Holding brake
The brake has the following operation delay time. ON and OFF of the operation, please ensure the
brake operation time.
Cautions
！
The setting of zero speed stop method is only valid for position control and speed control.
