Mitsubishi Electronics FR-F700 Carrier frequency and SoftPWM selection, Analog input selection

Pr. 72, 240, 260

Carrier frequency and SoftPWM selection

Pr.72 PWM frequency selection			Pr.240 Soft-PWM operation selection
Pr.260 PWM frequency automatic switchover
You can change the motor sound.
Pr.	Setting		Description
Number	Range
		You can change the PWM carrier frequency. The
72	0 to 15/	setting displayed is in [kHz].
	0 to 6, 25 *	Note that 0 indicates 0.7kHz, 15 indicates
		14.5kHz and 25 indicates 2.5kHz.
	0	Soft-PWM is invalid
240	1	When "0 to 5" ("0 to 4" for the 75K or more) is set
		in Pr. 72, Soft-PWM is valid
		PWM carrier frequency is constant independently
	0	of load. When the carrier frequency is set to 3kHz
		or more (Pr. 72 ≥ 3), perform continuous operation
260
		at less than 85% of the rated inverter current.
	1	Decreases PWM carrier frequency automatically
		when load increases.

*The setting range varies according to the inverter capacity. (55K or less/75K or more).

(Note)When Pr. 260="1 (initial value)", if continuous operation is performed at 85% or more of the rated inverter current with Pr. 72 value set to “3” (3kHz) or more, the carrier frequency is automatically reduced. This may cause the motor noise to increase.

Pr. 73, 242, 243, 252, 253, 267

Analog input selection

Pr.73 Analog input selection

Pr.242 Terminal 1 added compensation amount (terminal 2)

Pr.243 Terminal 1 added compensation amount (terminal 4)

Pr.252 Override biasPr.253 Override gain

Pr.267 Terminal 4 input selection

￿You can select the function that switches between forward rotation and reverse rotation according to the analog input polarity, the override function and the input signal specifications.

￿For the terminals 1, 2, 4 used for analog input, voltage input (0 to 5V, 0 to 10V) or current input (4 to 20mA) can be selected.

￿The additional compensation and fixed ratio of analog compensation (override) using terminal 2 as an auxiliary input can be made to multi-speed operation or the speed setting signal (main speed) of the terminal 2 or terminal 4.

( indicates the main speed setting)

				Compensation
Pr. 73	Terminal 2	Terminal 1	Terminal 4 Input	Input Terminal	Polarity Reversible
				and
Setting	Input	Input		Compensation
				Method
0	0 to 10V	0 to ±10V
1	0 to 5V	0 to ±10V		Terminal 1	Not function
(Initial
				added	(Indicates that
value)
				compensation	a frequency
2	0 to 10V	0 to ±5V
					command
3	0 to 5V	0 to ±5V			signal of
4	0 to 10V	0 to ±10V		Terminal 2	negative
5	0 to 5V	0 to ±5V	When the AU	override	polarity is not
6	4 to 20mA	0 to ±10V			accepted. )
			signal is off
7	4 to 20mA	0 to ±5V
			×
10	0 to 10V	0 to ±10V		Terminal 1
				added
11	0 to 5V	0 to ±10V
				compensation
12	0 to 10V	0 to ±5V
13	0 to 5V	0 to ±5V			Function
14	0 to 10V	±		Terminal 2
		0 to 10V
15	0 to 5V	0 to ±5V		override
16	4 to 20mA	0 to ±10V		Terminal 1
17	4 to 20mA	0 to ±5V		added
				compensation

				Compensation
Pr. 73	Terminal 2	Terminal 1	Terminal 4 Input	Input Terminal	Polarity Reversible
				and
Setting	Input	Input		Compensation
				Method
0	0 to 10V	0 to ±10V
1		0 to ±10V		Terminal 1	Not function
(Initial
				added	(Indicates that
value)
	×			compensation	a frequency
2		0 to ±5V			command
3		0 to ±5V			signal of
4	0 to 10V	×	When the AU	Terminal 2	negative
5	0 to 5V		signal is on	override	polarity is not
6	×	0 to ±10V	According to the		accepted. )
7		0 to ±5V	Pr. 267 setting	Terminal 1
10		0 to ±10V	(Initial value)
				added
11		0 to ±10V	1:0 to 5V
				compensation
	×		2:0 to 10V
12		0 to ±5V
13		0 to ±5V			Function
14	0 to 10V	×		Terminal 2
15	0 to 5V			override
16		0 to ±10V		Terminal 1
17	×	0 to ±5V		added
				compensation

(1)Added compensation (Pr.242, Pr.243)

⋅A compensation signal can be added to the main speed setting for synchronous operation, etc.

Output frequency		Output frequency
	When voltage across		When voltage across
	terminals 2-5 is 2.5V		terminals 2-5 is 2.5V
	(5V)		(5V)
	When voltage			When voltage
				across terminals
	across terminals
				2-5 is 0V
	2-5 is 0V
-5V -2.5V	0 +2.5V +5V Terminal 1	-5V -2.5V	0 +2.5V	+5V Terminal 1
(-10V) (-5V)	(+5V) (+10V)	(-10V) (-5V)	(+5V)	(+10V)
	Forward rotation	Reverse rotation	Forward rotation
STF		STF
	Forward rotation	Reverse rotation Forward rotation
(a) When Pr. 73 setting is 0 to 5		(b) When Pr. 73 setting is 10 to 15

⋅The terminal 1 (frequency setting auxiliary input) signal is added to the main speed setting signal of the terminal 2 or 4.

(2)Override function (Pr.252, Pr.253)

⋅When an override is selected, the terminal 1 or 4 is used for the main speed setting and the terminal 2 for the override signal. (When the main speed of the terminal 1 or terminal 4 is not input, compensation by the terminal 2 is invalid.)

		200
	(%)	150
	value
Pr.252				Initial value
	Override	100
Pr.253				(50% to 150%)
		50
		0
		0V	2.5V	5V
			(5V)	(10V)

Voltage across terminals 2-5

⋅When an override is selected, the terminal 1 or 4 is used for the main speed setting and the terminal 2 for the override signal (50% to 150% at 0 to 5V or 0 to 10V). (When the main speed of the terminal 1 or 4 is not input, compensation by the terminal 2 is invalid.)

⋅When Pr. 22 Stall prevention operation level = "9999", the value of the terminal 1 is as set to the stall prevention operation level.

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