Mitsubishi Electronics FR-S500 instruction manual Acceleration/deceleration pattern Pr, Setting

Explanation of functions (parameters)

2.3.14 Acceleration/deceleration pattern (Pr. 29 )

Set the acceleration/deceleration pattern.

	Set value 0		Set value 1
[Linear		[S-pattern
acceleration/deceleration]		acceleration/deceleration A]
(Hz)		(Hz)
Output frequency		Output frequency	fb
	Time			Time

Set value 2

[S-pattern acceleration/deceleration B]

(Hz)f1
Output frequency
f2	Time

Parameter	Name	Factory	Setting	Remarks
		Setting	Range
29	Acceleration/	0	0, 1, 2	Setting is enabled when Pr. 30 = "1".
	deceleration pattern
<Setting>
Pr. 29	Function			Description
Setting
	Linear	Acceleration is made to the set frequency linearly.
0	acceleration/
		(Factory setting)
	deceleration
		For machine tool spindle applications, etc.
		Used when acceleration/deceleration must be made in a short
	S-pattern	time to a high-speed region of not lower than the base
		frequency. Acceleration/deceleration is made in a pattern
1	acceleration/
		where fb (base frequency) acts as the inflection point of an S
	deceleration A (*)
		shape, and you can set the acceleration/deceleration time
		which matches the motor torque reduction in the constant-
		output operation region of not lower than the base frequency.
	S-pattern	For prevention of load shifting in conveyor and other
		applications. Since acceleration/deceleration is always made in
2	acceleration/	an S shape from f2 (current frequency) to f1 (target frequency),
	deceleration B	this function eases shock produced at acceleration/
		deceleration and is effective for load collapse prevention, etc.

CAUTION

2

*As the acceleration/deceleration time, set the time taken to reach the Pr. 3 "base frequency" value, not the Pr. 20 "acceleration/deceleration reference frequency" value.

♦Related parameters♦

•Base frequency (acceleration/deceleration time setting) setting ⇒ Pr. 3 "base frequency" (refer to page 65)

•Pr. 20 "acceleration / deceleration reference frequency" ⇒ refer to page 67

•For setting of "1" (S-pattern acceleration/deceleration A)

⇒Pr. 44 "second acceleration/deceleration time", Pr. 45 "second deceleration time" (refer to page 67)

FUNCTIONS

79