Mitsubishi FR-A800

Speed control under Real sensorless vector control, vector control, PM sensorless vector
control
PARAMETERS
187
5
Torque limit level using analog input (terminals 1, 4) (Pr.810 = "1", Pr.858,
Pr.868)
• The torque is limited with the analog input of terminal 1 or terminal 4.
• Torque limit using analog input is valid with a limit value lower than the internal torque limit (Pr.22, Pr.812 to Pr.814). (If the
torque limit using analog input exceeds the internal torque limit, the internal torque limit is valid.)
• When inputting the torque limit value from terminal 1, set Pr.868 Terminal 1 function assignment="4". When
inputting from terminal 4, set Terminal 4 function assignment="4".
• When Pr.858="4" and Pr.868="2", the torque for regenerative driving is limited with the terminal 1 analog input, and the
torque for power driving is limited with the terminal 4 analog input.
• The torque limit using analog input can be corrected with Calibration parameters C16 (Pr.919) to C19 (Pr.920), and C38
(Pr.932) to C41 (Pr.933). (Refer to page 421.)
NOTE
• When inputting an analog signal to the terminal 1, input a positive voltage (0 V to +10 V (+5 V)).
When a negative voltage (0 V to -10 V (-5 V)) is input, the torque limit value set by the analog signal becomes "0".
quad1
(Pr. 22)
quad4
(Pr. 814)
quad3
(Pr. 813)
quad2
(Pr. 812)
Reverse
rotation
Forward
rotation
Torque limit
Speed
+
-
Forward
driving
Forward
regeneration
Reverse
driving
Reverse
regeneration
∗
∗∗
∗
Rated speed
quad4
quad2
Forward rotation
Reverse rotation
Torque limit
Speed
+
-
Forward
regeneration
Forward
driving
Reverse
regeneration
Reverse
driving
quad3
quad1
Terminal 4 input or
internal torque limit
whichever is smaller
Terminal 4 input or
internal torque limit
whichever is smaller
Terminal 4 input or
internal torque limit
whichever is smaller
Terminal 4 input or
internal torque limit
whichever is smaller
Rated speed
When Pr. 858 =4, Pr. 868 =2
∗ Analog input (terminal 1, 4) or internal torque control (Pr. 22 etc.) whichever is smaller
Calibration example of terminal 1
400
150
0
0
Torque setting signal
100%
10V
Initial
value
Bias
05V
C18(Pr.920)
Gain
Torque(%)
C16(Pr.919)
C17(Pr.919) C19(Pr.920)
Calibration example of terminal 4
400
150
0
Torque setting signal
100%
Initial
value
Bias
0 20mA
C40(Pr.933)
Gain
Torque(%)
C38(Pr.932)
C39(Pr.932) C41(Pr.933)
20
4