YASKAWA SGMPS - Page 159

5 Operation
5.5.4 Speed Limit in Torque Control
5-52
 Internal Speed Limit Function
If the internal speed limit function is selected in Pn002, set the limit of the maximum speed of the motor in
Pn407.
The limit of the speed in Pn408 can be selected from the maximum speed of the motor or the excessive speed
alarm detection speed. Select the overspeed alarm detection speed to limit the speed to the maximum or equiv-
alent speed of the motor.
Note: • The setting in this parameter is enabled when Pn002.1 is set to 0.
• The servomotor’s maximum speed will be used when the setting in this parameter exceeds the maximum speed of
the servomotor used.
 External Speed Limit Function
If the external speed limit function is selected in Pn002, set the V-REF input signal and Pn300.
Inputs an analog voltage reference as the servomotor speed limit value during torque control.
<Note>
• The smaller value of the speed limit input from the V-REF on the Pn407 (Speed Limit during Torque Con-
trol) is enabled when Pn002.1 is set to 1.
• The setting in Pn300 determines the voltage level to be input as the limit value. Polarity has no effect.
• When Pn300 is set to 6.00 (factory setting) and 6 V is input to V-REF (CN1-5, 6), the speed is limited to the
rated speed of the servomotor.
Pn407
Speed Limit During Torque Control
Classification
Setting Range Setting Unit Factory Setting When Enabled
0 to 10000
1 min
-1
10000 Immediately Setup
Torque
Parameter Meaning When Enabled Classification
Pn408
n.
0
Use the smaller value between maximum motor rota-
tion number and the value of Pn407 as speed limit
value.
After restart Setup
n.1
Use the smaller value between excessive speed alarm
detection speed and the value of Pn407 as speed limit
value.
Type
Signal
Name
Connector
Pin Number
Name
Input
V-REF CN1-5 External speed limit input
SG CN1-6 Signal ground for external speed limit input
Pn300
Speed Reference Input Gain
Classification
Setting Range Setting Unit Factory Setting When Enabled
150 to 3000 0.01 V/rated speed 600 Immediately Setup
Speed
Position
Torque