Carrier Frequency And Softpwm Selection; Analog Input Selection - Mitsubishi Electric FR-F700 Manual

Pr.
72, 240, 260

Carrier frequency and SoftPWM selection

Pr.72 PWM frequency selection
Pr.260 PWM frequency automatic switchover
You can change the motor sound.
Pr. Setting
Number Range
You can change the PWM carrier frequency. The
0 to 15/ setting displayed is in [kHz].
72
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
When "0 to 5" ("0 to 4" for the 75K or more) is set
1
in Pr. 72, Soft-PWM is valid
PWM carrier frequency is constant independently
of load. When the carrier frequency is set to 3kHz
0
or more (Pr. 72 ≥ 3), perform continuous operation
260
at less than 85% of the rated inverter current.
Decreases PWM carrier frequency automatically
1
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 bias
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
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)
Pr. 73 Terminal 2 Terminal 1
Setting Input Input
0 0 to 10V 0 to ±10V
1
0 to ±10V
(Initial 0 to 5V
value)
0 to ±5V
2 0 to 10V
3 0 to 5V 0 to ±5V
0 to 10V 0 to ±10V
4
5 0 to 5V 0 to ±5V
6 4 to 20mA 0 to ±10V
4 to 20mA 0 to ±5V
7
10 0 to 10V 0 to ±10V
11 0 to 5V 0 to ±10V
0 to ±5V
12 0 to 10V
13 0 to 5V 0 to ±5V
0 to 10V 0 to ±10V
14
0 to ±5V
15 0 to 5V
16 4 to 20mA 0 to ±10V
17 4 to 20mA 0 to ±5V
35
indicates simple mode parameters and
Pr.
Pr.240 Soft-PWM operation selection
Description
Pr.253 Override gain
and fixed ratio of
Compensation
Input Terminal
Terminal 4 Input Polarity Reversible
and
Compensation
Method
Not function
Terminal 1
(Indicates that
added
a frequency
compensation
command
signal of
negative
Terminal 2
polarity is not
override
When the AU accepted. )
signal is off
×
Terminal 1
added
compensation
Function
Terminal 2
override
Terminal 1
added
compensation
indicates extended parameters. When setting parameters, refer to the instruction manual (applied) and understand instructions.
Pr.
Pr. 73 Terminal 2
Setting Input
0 to 10V 0 to ±10V
0
1
(Initial
value)
×
2
3
4 0 to 10V
5 0 to 5V
6
×
7
10
11
×
12
13
14 0 to 10V
15 0 to 5V
16
×
17
(1) Added compensation (Pr.242, Pr.243)
⋅ A compensation signal can be added to the main speed
setting for synchronous operation, etc.
Output frequency
When voltage across
terminals 2-5 is 2.5V
(5V)
-5V -2.5V 0 +2.5V
(-10V) (-5V) (+5V)
Forward rotation
STF
Forward rotation
(a) When Pr. 73 setting is 0 to 5
⋅ 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
analog
is not input, compensation by the terminal 2 is invalid.)
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 (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.
Compensation
Input Terminal
Terminal 1
Terminal 4 Input
and
Input
Compensation
Method
Terminal 1
0 to ±10V
added
compensation
0 to ±5V
0 to ±5V
Terminal 2
When the AU
×
override
signal is on
0 to ±10V
According to the
0 to ±5V Pr. 267 setting
Terminal 1
(Initial value)
0 to ±10V
added
1:0 to 5V
0 to ±10V
compensation
2:0 to 10V
0 to ±5V
0 to ±5V
Terminal 2
×
override
0 to ±10V
Terminal 1
added
0 to ±5V
compensation
Output frequency
When voltage across
terminals 2-5 is 2.5V
(5V)
When voltage
across terminals
2-5 is 0V
+5V Terminal 1 -5V -2.5V 0 +2.5V
(+10V) (-10V) (-5V) (+5V)
Reverse rotation Forward rotation
STF
Reverse rotation
Forward rotation
(b) When Pr. 73 setting is 10 to 15
200
150
Initial value
100
(50% to 150%)
50
0
0V 2.5V
(5V)
Voltage across terminals 2-5
Polarity Reversible
Not function
(Indicates that
a frequency
command
signal of
negative
polarity is not
accepted. )
Function
When voltage
across terminals
2-5 is 0V
+5V Terminal 1
(+10V)
5V
(10V)