Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

Страница: 265 / 826

Parameter Speed control by real sensorless vector control, vector control
FR-A700 EC 6 - 85
Second torque limit level (TL signal, Pr. 815)
●
For Pr. 815 "Torque limit level 2" , the Pr. 815 value is a torque limit value regardless of Pr.
810 "Torque limit input method" selection when the torque limit selection signal (TL) is on.
●
Set "27" in Pr. 178 to Pr. 189 "Input terminal function selection" to assign a function to the
TL signal.
Set a torque limit value during acceleration and deceleration individually (Pr. 816, Pr. 817 )
You can set torque limit during acceleration and deceleration individually.
The following chart shows torque limit according to the settings of Pr. 816 "Torque limit level dur-
ing acceleration" and Pr. 817 "Torque limit level during deceleration".
I001505E
Fig. 6-11: Second torque limit level
NOTE Changing the terminal assignment using Pr. 178 to Pr. 189 "Input terminal function selec-
tion" may affect the other functions. Please make setting after confirming the function of
each terminal.
I001506E
Fig. 6-12: Individual torque limit value during acceleration and deceleration
Forward
driving
Forward
regeneration
Reverse
driving
Reverse
regeneration
Speed
Torque limit
quad4
Forward
rotation
Reverse
rotation
quad1
quad2 quad3
Pr. 815 Pr. 815
Pr. 815 Pr. 815
Pr. 816
"Torque limit level during
acceleration"
Pr. 817
"Torque limit level during
deceleration"
Pr. 22
"Torque limit level"
1s
Acceleration Constant speed Deceleration
Time
Set
frequency
Output
frequency [Hz]
After the state where dif-
ference between the set
speed and running
speed is within ±2Hz has
persisted for 1s, torque
limit level during acceler-
ation/deceleration (Pr.
816 or Pr. 817) shifts to
torque limit level during
constant speed (Pr. 22).