YASKAWA Sigma-7 SGD7S Series

Set the speed limit for the motor in Pn407 (Speed Limit during Torque Control) or Pn480
(Speed Limit during Force Control). Also set Pn408 = n.X (Speed Limit Selection) to
specify using the maximum motor speed or the overspeed alarm detection speed as the
speed limit. Select the overspeed alarm detection speed to limit the speed to the equiva-
lent of the maximum motor speed.
Parameter Meaning When Enabled Classification
Pn408
n.0
(default
setting)
Use the smaller of the
maximum motor speed
and the setting of Pn407
or Pn480 as the speed
limit.
After restart Setup
n.1
Use the smaller of the
overspeed alarm detec-
tion speed and the set-
ting of Pn407 or Pn480
as the speed limit.
If you are using a Rotary Servomotor, set Pn407 (Speed Limit during
Torque Control). If you are using a Linear Servomotor, set Pn480 (Speed
Limit during Force Control).
n Rotary Servomotors
Speed Limit during Torque Control
Setting
Range
Setting Unit Default Set-
ting
When Ena-
bled
Classifica-
tion
Pn407 0 to 10,000
1 min
-1
10000 Immediately Setup
(applies to Torque Control)
n Linear Servomotors
Speed Limit during Force Control
Setting
Range
Setting Unit Default Set-
ting
When Ena-
bled
Classifica-
tion
Pn480 0 to 10,000 1 mm/s 10000 Immediately Setup
(applies to Force Control)
If the parameter setting exceeds the maximum speed of the Servomotor,
the Servomotor’s maximum speed or the overspeed alarm detection
speed will be used.
7.3 Operation for Momentary Power Interruptions
Even if the main power supply to the SERVOPACK is interrupted momentarily, power
supply to the motor (servo ON status) will be maintained for the time set in Pn509
(Momentary Power Interruption Hold Time).
Internal Speed Limiting
Sigma-7 Series SERVOPACKs
Application Functions
Operation for Momentary Power Interruptions
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