Mitsubishi Electric 800 Series Instruction Manual (Function page 240

 S-pattern acceleration/deceleration B (Pr.29 = "2")
• This is useful for preventing collapsing stacks such as on a conveyor. S-pattern acceleration/deceleration B can reduce
the impact during acceleration/deceleration by accelerating/decelerating while maintaining an S-pattern from the present
frequency (f2) to the target frequency (f1).
[S-pattern acceleration
/deceleration B]
f1
f2
Time
NOTE
• When the RT signal turns ON during acceleration or deceleration with the S-pattern acceleration/deceleration B enabled, a
pattern of acceleration or deceleration changes to linear at the moment.
• When acceleration/deceleration time (such as Pr.7 and Pr.8) is set to "0 s" under Real sensorless vector control, linear
acceleration and deceleration are performed for the S-pattern acceleration/deceleration (Pr.29 ="1 or 2").
• Set linear acceleration/deceleration (Pr.29 = "0" (initial setting)) when torque control is performed under Real sensorless vector
control. When acceleration/deceleration patterns other than the linear acceleration/deceleration are selected, the protective
function of the inverter may be activated.
Parameters referred to
Pr.3 Base frequencypage 470
Pr.7 Acceleration time, Pr.8 Deceleration time, Pr.20 Acceleration/deceleration reference frequencypage 232
10. (F) Settings for Acceleration/Deceleration
10.2 Acceleration/deceleration pattern
1
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9
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