Stopping Method For Servo Off; Servomotor Stopping Method For Alarms - YASKAWA SGD7S Product Manual

5.12 Motor Stopping Method for Servo OFF and Alarms

5.12.1 Stopping Method for Servo OFF

5.12.1 Stopping Method for Servo OFF

Set the stopping method for when the servo is turned OFF in Pn001 = n.X (Servo OFF or
Alarm Group 1 Stopping Method).
Pn001
Note: If Pn001 is set to n.0 (Stop the motor by applying the dynamic brake) and the Servomotor is stopped or
operates at a low speed, braking force may not be generated, just like it is not generated for coasting to a
stop.

5.12.2 Servomotor Stopping Method for Alarms

There are two types of alarms, group 1 (Gr. 1) alarms and group 2 (Gr. 2) alarms. A different
parameter is used to set the stopping method for alarms for each alarm type.
Refer to the following section to see which alarms are in group 1 and which are in group 2.
14.2.1 List of Alarms on page 14-5
Motor Stopping Method for Group 1 Alarms
When a group 1 alarm occurs, the Servomotor will stop according to the setting of Pn001 =
n.X. The default setting is to stop by applying the dynamic brake.
Refer to the following section for details.
5.12.1 Stopping Method for Servo OFF on page 5-36
Motor Stopping Method for Group 2 Alarms
When a group 2 alarm occurs, the Servomotor will stop according to the settings of the follow-
ing three parameters. The default setting is for zero clamping.
• Pn001 = n.X (Servo OFF or Alarm Group 1 Stopping Method)
• Pn00A = n.X (Motor Stopping Method for Group 2 Alarms)
• Pn00B = n.X (Motor Stopping Method for Group 2 Alarms)
If you set Pn00B to n.1 (Apply dynamic brake or coast Servomotor to a stop), you can
use the same stopping method as group 1. If you are coordinating a number of Servomotors,
you can use this stopping method to prevent machine damage that may result because of dif-
ferences in the stopping method.
The following table shows the combinations of the parameter settings and the resulting stop-
ping methods.
5-36
Servomotor Stop-
Parameter

n. 0
(default setting)
Dynamic brake

n. 1

n. 2 Coasting
Status after Servo-
ping Method motor Stops
Dynamic brake
Coasting
Coasting
Classifi-
When Enabled
cation
After restart Setup