Mitsubishi Electric FR-A800, Instruction Manual

Page: 266 / 1042

Speed control under Real sensorless vector control, vector control, PM sensorless vector control Parameters
5 - 86
Block diagram of torque limit
Selecting the torque limit input method (Pr. 810)
Use Pr. 810 "Torque limit input method selection" to select which method to use to limit the output
torque during speed control.
I001501E
Fig. 5-13: Torque limit block diagram
Pr. 810 setting
Torque limit input
method
Operation
0 (Initial value) Internal torque limit 1
Perform the torque limit operation using the parameter (Pr. 22, Pr. 812
to Pr. 814) settings.
If changing the torque limit parameters via communication is enabled,
the torque limit input can be performed via communication.
1 External torque limit
Torque limit using analog voltage (current) to terminal 1 or terminal 4 is
valid.
2 Internal torque limit 2
The torque limit by communication option (FR-A8NC/FR-A8NCE) is
enabled.
Tab. 5-28: Torque limit input
Vector control
Speed
command
Speed control
Torque limit
Iq current control
IM
Encoder