Mitsumi electronic 55K, FR-F520-0.75K Acceleration/deceleration pattern Pr , Pr.140 to Pr.143

PARAMETERS

4.2.14 Acceleration/deceleration pattern (Pr. 29, Pr.140 to Pr.143)

Pr. 29 "acceleration/deceleration pattern"

Pr. 140 "backlash acceleration stopping frequency" Pr. 141 "backlash acceleration stopping time"

Pr. 142 "backlash deceleration stopping frequency" Pr. 143 "backlash deceleration stopping time"

Set the acceleration/deceleration pattern.

Related parameters

Pr. 3 "base frequency" Pr. 7 "acceleration time" Pr. 8 "deceleration time"

Pr. 20 "acceleration/deceleration reference frequency"

Pr. 44 "second acceleration/ deceleration time"

Pr. 45 "second deceleration time"

Also, you can suspend acceleration/deceleration at set frequencies and for the time period set in the parameters.

Parameter	Factory	Setting Range	Remarks
Number	Setting
29	0	0, 1, 2, 3	3: Backlash compensation
140	1.00Hz	0 to 120Hz	Valid when Pr. 29 = 3.
141	0.5 s	0 to 360 s	Valid when Pr. 29 = 3.
142	1.00Hz	0 to 120Hz	Valid when Pr. 29 = 3.
143	0.5 s	0 to 360 s	Valid when Pr. 29 = 3.

Set value 0

[Linear acceleration/deceleration]

Output (Hz)frequency Time

Set value 1

[S-shaped acceleration/deceleration A]

(Hz)
Output frequency	fb
	Time

Set value 2

[S-shaped acceleration/deceleration B]

(Hz)	f1
Output frequency	f2

Time

Output frequency (Hz)

Set value 3 [Backlash compensation function]

		∆ f2 Pr.142
∆ f1	Pr.140	Time
∆ t1 Pr.141		∆ t2 Pr.143

<Setting>

Pr. 29	Function	Description
Setting
	Linear
0	acceleration/	Linear acceleration/deceleration is made up/down to the preset frequency (factory setting).
	deceleration		4
	S-shaped	For machine tool spindles
		This setting is used when it is necessary to make acceleration/deceleration in a short time up to the
	acceleration/
1		60Hz or higher speed range. In this acceleration/deceleration pattern, fb (base frequency) is always the
	deceleration A
		inflection point of an S shape, and you can set the acceleration/deceleration time according to the
	(Note 1)
		reduction in motor torque in the 60Hz or higher constant-output operation range.
	S-shaped	Prevention of cargo collapse on conveyor, etc.
		This setting provides S-shaped acceleration/deceleration from f2 (current frequency) to f1 (target
2	acceleration/
		frequency), easing an acceleration/deceleration shock. This pattern has an effect on the prevention of
	deceleration B
		cargo collapse, etc.
	Backlash	Backlash compensation for reduction gear, etc.
		This function stops the speed change temporarily during acceleration/deceleration, reducing a shock
3	compensation
		generated when a reduction gear backlash is eliminated suddenly. Use Pr. 140 to Pr. 143 to set the
	(Note 2, 3)
		stopping times and stopping frequencies in accordance with the above diagrams.

Note: 1. For the acceleration/deceleration time, set the time required to reach the "base frequency" in

Pr. 3, not the "acceleration/deceleration reference frequency" in Pr. 20. For details, refer to Pr. 7 and Pr. 8.

2.Pr. 140 to Pr. 143 is accessible when "3" is set in Pr. 29.

3.The acceleration/deceleration time is increased by the stopping time.

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