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Sigma II User's Manual
5.4.2
Using the Dynamic Brake
To stop the servomotor by applying the dynamic brake (DB), set the desired mode in
the following parameter. The servomotor will stop due to equipment friction if the
dynamic brake is not applied.
Parameter
Pn001.0
Servo OFF or Alarm Stop Mode
The SGDH servo amplifier turns OFF under the following conditions:
•
The Servo ON input signal (/S–ON, CN1–40) is turned OFF.
•
A servo alarm occurs.
•
Power is turned OFF.
Specify the Stop Mode if any of these occurs during operation.
Pn001.0 Setting
0
1
2
Note: * If the servomotor is stopped or moving at extremely low speed, it will coast to a stop.
Note: The dynamic brake is an emergency stop function. Do not repeatedly start and stop the servomotor
using the servo ON signal (/S–ON) or by repeatedly turning power ON and OFF.
Note: Dynamic brake (DB) is a common way of quickly stopping
a servomotor by electrically shorting its electrical windings.
The DB circuit is incorporated into the servo amplifier.
Signal
Servo
Stop mode
OFF
Pn001.0 = 0
or 1
Dynamic
brake stop
Pn001.0
= 2
Coast to a
stop
Uses the dynamic brake to stop the servomotor.
Maintains dynamic brake after the servomotor stops.
Uses the dynamic brake to stop the servomotor.
Releases dynamic brake after the servomotor stops, and the servomotor
coasts to a stop.
Coasts the servomotor to a stop.
The servomotor is turned OFF and motion stops due to equipment friction.
Chapter 5: Parameter Settings and Functions
Setting
(ms)
Default Setting: 0
After stopping
0
Hold dynamic brake
Coast status
1
Coast status
Result
5-61
Description
Speed/Torque Control,
Position Control
*
Servo amplifier
Servomotor
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