Summa Series Servodrive Product Manual
Application Functions
Document Version: V1.01
(Dec, 2019)
© 2019 ESTUN Automation Co., Ltd. All right reserved.
7-6
7.4.4
Reverse Brake Torque Limit Setting
If Pn004.0 is set to 3 or 4, the Motor will be decelerated to a stop using the torque set in Pn405 as the
maximum torque.
Parameter Name
Range
Unit
Default When Enabled
Pn405
Reverse Brake Torque Limit
0 to 350
%
300
Immediately
NOTE
This setting is a percentage of the rated torque (i.e., the rated torque is
100%).
The default setting is 800%. This setting is large enough to allow you to
operate the Motor at the maximum torque. However, the maximum
emergency stop torque that you can actually use is the maximum torque
of the Motor.
7.5
Holding Brake
7.5.1
Function Description
A holding brake is used to hold the position of the moving part of the machine when the Drive is turned
OFF so that moving part does not move due to gravity or an external force.
You can use the brake that is built into a Motor with a Brake, or you can provide one on the machine.
The holding brake is used in the following cases.
Vertical Axis
Prevents the moving part from
moving due to an external force.
Motor
Holding Brake
Moving part of machine
Prevents the moving part from
falling due to gravity when the
power supply is OFF.
Shaft with External
Force Applied
External force
Motor
Moving part of machine
Holding Brake
IMPORTANT
The brake built into a Motor with a Brake is a de-energization brake. It is
used only to hold the Motor and cannot be used for braking. Use the holding
brake only to hold a Motor that is already stopped.
