YASKAWA SGD7S-R70A20A023F40B Product Manual page 83

4.3 Table Parameter Settings for Speed/Torque (Pressure) Table Operation
4.3.3 Setting Condition for Changing from Speed Table Operation to Torque (Pressure) Table Operation
 Torque (Pressure) Table Operation Example 1 for Pn6A4 = n.1
During speed table operation, if the pressure feedback detection value falls to the setting for
Pn44C (Pressure Feedback Enable Level) or less, torque references are restricted to the setting
of Pn6A5 (Torque (Pressure) Reference during Speed Table Operation) or less. The pressure
reference in Pn6A5 functions as the maximum limit when the pressure feedback detection
value exceeds the value of Pn44C.
Speed table operation changes to torque (pressure) table operation when the motor position
exceeds the table operation switching position (Pn6A8). After operation changes to pressure
table operation, the pressure feedback control follows the setting in Pn44C.
In the following example, speed table operation is changed to torque (pressure) table operation
when the motor position exceeds Pn6A8 even if the pressure feedback detection value does
not exceed Pn44C.
Speed
Pn6B2
Pn6AE
Pn6A5
Pn6B0
Pn6AC
Pn44C
 Torque (Pressure) Table Operation Example 2 for Pn6A4 = n.1
During speed table operation, if the pressure feedback detection value falls to the setting for
Pn44C (Pressure Feedback Enable Level) or less, torque references are restricted to the setting
of Pn6A5 (Torque (Pressure) Reference during Speed Table Operation) or less. The pressure
reference in Pn6A5 functions as the maximum limit when the pressure feedback detection
value exceeds the value of Pn44C.
Speed table operation changes to torque (pressure) table operation when the motor position
exceeds the table operation switching position (Pn6A8). After operation changes to pressure
table operation, the pressure feedback control follows the setting in Pn44C.
In the following example, the pressure feedback detection value exceeds Pn44C, so the motor
operates at the pressure reference in Pn6A5. When the motor position exceeds Pn6A8, speed
table operation changes to torque (pressure) table operation.
Speed
Pn6B2
Pn6AE
Pn6A5
Pn6B0
Pn6AC
Pn44C
Pn44A
4-10
Speed table operation
Speed reference
Pn6C0 Pn6C4
Pn6C2
Even if the pressure feedback detection value exceeds the
setting of Pn6A5, speed table operation is continued.
Speed table operation
Speed reference
Pn6C0 Pn6C4
Pn6C2
Pn6A8
Torque (pressure) table operation
Feedback
Pressure feedback
speed
Pn6DE
Pn6DC
Pn6A8
Torque (pressure) table operation
Feedback
Pressure feedback
speed
Pn6DE
Pn6DC

Torque (pressure)
Pn6D6
Pn6D4
Pn6E0
Pn6D2

Torque (pressure)
Pn6D6
Pn6D4
Pn6E0
Pn6D2