YASKAWA SGDV User Manual page 125

Internal Speed Limit Function
If the internal speed limit function is selected in Pn002.1, set the limit of the maximum speed of the servomo-
tor in Pn407. The limit of the speed in Pn408.1 can be either the maximum speed of the servomotor or the
overspeed alarm detection speed. Select the overspeed alarm detection speed to limit the speed to the maxi-
mum speed of the servomotor or the equivalent.
Speed Limit During Torque Control
Pn407
Setting Range
0 to 10000
Note: The servomotor's maximum speed or the overspeed alarm detection speed will be used when the setting in this
parameter exceeds the maximum speed of the servomotor used.
Parameter
n. 0
[Factory setting]
Pn408
n. 1
External Speed Limit Function
If the external speed limit function is selected in Pn002.1, set the V-REF input signal and Pn300.
Signal
Type
Name
V-REF CN1-1
Input
SG CN1-2
Inputs an analog voltage reference as the servomotor speed limit value during torque control.
Notes:
• The smaller value of the speed limit input from the V-REF and the value of Pn407 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 (CN1-1, 2), the speed is limited to the
rated speed of the servomotor used.
Speed Reference Input Gain
Pn300
Setting Range
150 to 3000
Setting Unit Factory Setting
-1
1 min
Meaning
Uses the smaller value of the maximum motor speed
and the value of Pn407 as the speed limit value.
Uses the smaller value of the overspeed alarm detec-
tion speed and the value of Pn407 as speed limit value.
Connector
Pin Number
External speed limit input
Signal ground for external speed limit input
Setting Unit Factory Setting
0.01 V
5.5 Torque Control (Analog Voltage Reference)
Torque
When Enabled
10000 Immediately
When
Enabled
After restart
Name
Speed Position Torque
When Enabled
600 Immediately
Classification
Setup
Classification
Setup
Classification
Setup
5
5-45