Bias And Gain Of Frequency Setting Voltage (Current) [Pr. 125, Pr. 126, Pr. 241, C2 (Pr. 902) To C7 (Pr. 905), C12 (Pr. 917) Bis C15 (Pr. 918)] - Mitsubishi Electric FR-A700 Instruction Manual

Frequency/torque setting by analog input (terminals 1, 2 and 4)
6.20.5 Bias and gain of frequency setting voltage (current) [Pr. 125, Pr. 126,
Pr. 241, C2 (Pr. 902) to C7 (Pr. 905), C12 (Pr. 917) bis C15 (Pr. 918)]
You can set the magnitude (slope) of the output frequency as desired in relation to the frequency
setting signal (0 to 5V, 0 to 10V or 0/4 to 20mA DC).
These parameters can be used to configure the inverter precisely for set point signals that either
exceed or do not quite reach 5V or 10V or 20mA. These settings can also be used to configure
inverse control (i.e. high output frequency at minimum set point signal, minimum output
frequency at maximum set point signal).
Pr. No. Name
Terminal 2 frequency setting
125
gain frequency
Terminal 4 frequency setting
126
gain frequency
Analog input display unit
241
switchover
C2
Terminal 2 frequency setting
(902)
bias frequency
C3
Terminal 2 frequency setting
(902)
bias
C4
Terminal 2 frequency setting
(903)
gain
C5
Terminal 4 frequency setting
(904)
bias frequency
C6
Terminal 4 frequency setting
(904)
bias
C7
Terminal 4 frequency setting
(905)
gain
C12
Terminal 1 bias frequency
(917)
(speed)
C13
Terminal 1 bias (speed)
(917)
C14
Terminal 1 gain frequency
(918)
(speed)
C15
Terminal 1 gain (speed)
(918)
The parameter number in parentheses is the one for use with the parameter unit (FR-PU04
or FR-PU07).
The above parameter allow its setting to be changed during operation in any operation mode
even if "0" (initial value) is set in Pr. 77 "Parameter write selection".
6 - 382
Initial Setting
Description
Value Range
Set the frequency of terminal 2
50Hz 0–400Hz
input gain (maximum).
Set the frequency of terminal 4
50Hz 0–400Hz
input gain (maximum).
0 Displayed in %
0
Displayed in
1
V/mA
Set the frequency on the bias side
0Hz 0–400Hz
of terminal 2 input.
Set the converted % of the bias
0% 0–300% side voltage (current) of terminal
2 input.
Set the converted % of the gain
100% 0–300%
side voltage of terminal 2 input.
Set the frequency on the bias side
0Hz 0–400Hz
of terminal 4 input.
Set the converted % of the bias
20% 0–300% side current (voltage) of terminal
4 input.
Set the converted % of the gain
100 % 0–300 % side current (voltage) of terminal
4 input.
Set the frequency (speed) on the
0 Hz 0–400 Hz
bias side of terminal 1 input.
Set the converted % of the bias
0 % 0–300 %
side voltage of terminal 1 input.
Set the frequency (speed) of ter-
50 Hz 0–400 Hz
minal 1 input gain (maximum).
Set the converted % of the gain
100 % 0–300 %
side voltage of terminal 1 input.
Parameters referred to
20 Acceleration/
deceleration
reference
frequency
73 Analog input
selection
Select the unit of
267 Terminal 4 input
analog input
selection
display.
79 Operation mode
selection
Parameter
Refer to
Section
6.11.1
6.20.2
6.20.2
6.22.1