Yaskawa SGDB - Manual (Page 107)

3.2 Setting Parameters According to Host Controller
95
• This function cannot be used with the function for torque restriction by analog voltage
reference, described in Section 3.2.9 Using Torque Restriction by Analog Voltage Ref-
erence.
• For parameters and control modes, refer to Appendix C List of Parameters.
J Setting a Torque Feed-forward Value in Parameter Cn-13
The factory setting is Cn-13 = 30. If, for example, the torque feed-forward value is 3 V,
torque is restricted to 100% (rated torque).
Cn-13
TCRFGN
Torque Reference
Gain
Unit: 0.1
V/Rated
Torque
Setting
Range:
10 to 100
Factory
Setting:
30
For Speed/Torque
Control Only
3.2.9 Using Torque Restriction by Analog Voltage Reference
For speed control (analog reference) only.
This function restricts torque by assigning the T-REF terminal (1CN-9, 1CN-10) a torque
limit value in terms of analog voltage. Since torque reference input terminal T-REF is
used as an input terminal, this function cannot be used for torque control.
Torque limit value
Speed reference Speed loop
gain (Cn-04)
Integration
(Cn-05)
Torque limit value
Torque
reference
Speed feedback
Schematic Block Diagram for Torque Restriction by Analog Voltage Reference
J How to Use Torque Restriction by Analog Voltage Reference
To use this torque restriction function, set the following memory switch to 1.
Cn-02 Bit 8
Torque Restriction by Analog
Voltage Reference
Factory
Setting: 0
For Speed/Torque Control
Only
Enables this torque restriction function.
To use this function, input a speed reference to the V-REF terminal and a torque limit val-
ue to the T-REF terminal.
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