Mitsubishi Electronics FR-F700 Pr , 70 Selection of regeneration unit, Speed display and speed

Pr. 30, 70 Selection of regeneration unit

Pr.30 Regenerative function selection Pr.70 Special regenerative brake duty *

￿Use the high power factor converter (FR-HC) to reduce harmonics, improve the power factor, or continuously use the regenerative mode.

￿For the 75K or more, use the brake unit MT-BU5 or BR5 when the regenerative brake duty is need to be increased due to frequent starts and stops. Use the high power factor converter MT-HC to

reduce harmonics, improve the power factor, or continuously use the regenerative mode.

<55K or less>

Pr.30 Setting	Regeneration Unit
0 (initial value)	Brake unit (FR-BU, BU)

2High power factor converter (FR-HC),

power regeneration common converter (FR-CV)

<75K or more>

Pr.30 Setting	Pr.70 Setting *	Regeneration Unit
0 (initial value)		Not used
1	0%	Power regeneration converter (MT-RC)
	10%	Brake unit (MT-BU5)
2		High power factor converter (MT-HC)

*Pr.70 Special regenerative brake duty can be set for the 75K or more inverter.

Pr. Avoid mechanical resonance 31 to 36 points (frequency jump)

*1 Motor speed r/min conversion formula

....... Frequency × 120/number of motor poles (Pr. 144)

Machine speed conversion formula

...... Pr. 37 × frequency/60Hz

For Pr. 144 in the above formula, the value is “Pr. 144-100” when “102 to 110” is set in Pr. 144 and the value is “4” when Pr. 37=0 and Pr.144=0.

*2 The increments for Hz are 0.01Hz, machine speed are 1m/min and r/min are 1r/min

.

Pr. 41 to 43, 50	Detection of output frequency (SU,
	FU, FU2 signal)
Pr.41 Up-to-frequency sensitivity		Pr.42 Output frequency detection

Pr.43 Output frequency detection for reverse rotation

Pr.50 Second output frequency detection

The inverter output frequency is detected and output at the output signals.

￿If the set frequency is considered as 100%, output frequency can be adjusted between ±1% and ±100% with Pr. 41.

￿This parameter can be used to ensure that the running frequency has been reached to provide the operation start signal etc. for related equipment.

Output frequency	Running frequency		Adjustment
			range Pr.41
	(Hz)		Time
	OFF	ON	OFF
SU

￿ When the output frequency reaches or exceeds the setting of Pr.

Pr.31 Frequency jump 1A Pr.33 Frequency jump 2A Pr.35 Frequency jump 3A

When it is desired to avoid resonance attributable to the natural frequency of a mechanical system, these parameters allow resonant frequencies to be jumped.

Pr.32 Frequency jump 1B

Pr.34 Frequency jump 2B

Pr.36 Frequency jump 3B

	Frequency jump
(Hz)	Pr. 36
	Pr. 35
Set frequency	Pr. 34
	Pr. 33
	Pr. 32
	Pr. 31

42, the output frequency detection signal (FU) is output.

This function can be used for electromagnetic brake operation,

open signal, etc.

￿ When the detection frequency is set in Pr. 43, frequency detection

for reverse rotation use only can also be set. This function is

effective for switching the timing of electromagnetic brake

operation between forward rotation (rise) and reverse rotation

(fall) during vertical lift operation, etc.

￿ When outputting a frequency detection signal besides the FU

signal, set the detection frequency to Pr. 50 . The FU2 signal is

output when the output frequency reaches or exceeds the Pr. 50

setting.

￿Up to three areas may be set, with the jump frequencies set to either the top or bottom point of each area.

￿The value set to 1A, 2A or 3A is a jump point and operation in the jump zone is performed at these frequencies.

￿Frequency jump is not performed if the initial value is set to "9999".

￿During acceleration/deceleration, the running frequency within the set area is valid.

Pr. 37, 144	Speed display and speed
	setting
Pr.37 Speed display	Pr.144 Speed setting switchover

You can change the PU (FR-DU07) monitor display or frequency setting to motor speed or machine speed.

￿When the running speed monitor is selected, each monitor and setting are determined according to the combination of Pr. 37 and Pr. 144. (The units within the thick frame are the initial values.)

Pr. 37	Pr. 144	Output	Set	Running	Frequency
					Setting
		Frequency	Frequency	Speed
Setting	Setting				Parameter
		Monitor	Monitor	Monitor
					Setting
	0	Hz	Hz	r/min *1	Hz
0	2 to 10	Hz	Hz	r/min *1	Hz
	102 to	r/min *1	r/min *1	r/min *1	r/min *1
	110
	0	Hz	Hz	Machine	Hz
				speed *1
1 to	2 to 10	Machine	Machine	Machine	Machine
9998		speed *1	speed *1	speed *1	speed *1
	102 to	Hz	Hz	r/min *1	Hz
	110

Outputfrequency (Hz)		Forward		Pr.50
		rotation		Pr.42	Time
				Reverse	Pr.43
				rotation	Pr.50
Output
frequency OFF		ON	OFF	ON	OFF
FU
FU2	OFF	ON	OFF	ON	OFF

Pr.	44, 45		Refer to the section about Pr.7, Pr.8
Pr.	46	Refer to the section about Pr. 0.
Pr.	47	Refer to the section about Pr. 3.
Pr. 48, 49			Refer to the section about Pr. 22 and other
			relevant parameters.
Pr.	50	Refer to the section about Pr. 41 and other
		relevant parameters.
Pr.	51	Refer to the section about Pr. 9.

31 Pr. indicates simple mode parameters and Pr. indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions.