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

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).
Parameter

n.
(default setting)
Pn001

n.

n.
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 5-35
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.
Servomotor Stop-
ping Method
0
Dynamic brake
1
2 Coasting
5.12 Motor Stopping Method for Servo OFF and Alarms

5.12.1 Stopping Method for Servo OFF

Status after Servo-
When Enabled
motor Stops
Dynamic brake
After restart
Coasting
Coasting
Classifi-
cation
Setup
5
5-35