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Speed control operation
(3) Torque restrictions during acceleration and deceleration
You can set torque restrictions during acceleration and deceleration individually.
The following chart shows torque restrictions according to the settings of Pr. 816 "acceleration torque restriction"
and Pr. 817 "deceleration torque restriction".
4.1.6 Gain adjustment
As a simple tuning method, the Pr. 819 "easy gain tuning" function is available. (Refer to page 43.)
Related parameters
TL signal terminal assignment ⇒ Set "26" in any of Pr. 180 to Pr. 183 and Pr. 187 (input terminal function selection).
(Refer to page 61)
REMARKS
• When an analog signal is used to make external torque restriction, refer to page 47 for calibration of the No. 3 terminal (Pr.
904 "torque command No.3 bias" and Pr. 905 "torque command No.3 gain").
• When an analog signal is used to make regenerative torque restriction from the No. 1 terminal, perform calibration of the No.
1 terminal. (Pr. 919 "No. 1 terminl a bias (torque/magnetic flux)", Pr. 920 "No. 1 terminl gain (torque/magnetic flux)") Refer to
page 47.
REMARKS
• For fine adjustment of gain, refer to the Instruction Manual (detailed))
• Manual gain adjustment (Pr. 820, Pr. 821, Pr. 830, Pr. 831)
• Speed feed forward control and model adaptive speed control are also available.
After -60<preset speed-speed<60r/min
status has persisted for one second,
acceleration/deceleration ends and it
is judged as constant speed operation.
Pr. 816 "acceleration torque
restriction"
Acceleration Constant speed Deceleration
Constant speed
torque restriction
Torque restriction
value
-60r/min preset speed-speed
is judged as deceleration.
Pr. 817 "deceleration torque
restriction"
Speed
Preset speed-speed 60r/min
is judged as deceleration.