Mitsubishi Electric FR-A700 EC, Инструкция по эксплуатации

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Parameter Frequency/torque setting by analog input (terminals 1, 2 and 4)
FR-A700 EC 6 - 391
6.20.6 Bias and gain of torque (magnetic flux) setting voltage (current) [Pr. 241,
C16 (Pr. 919) to C19 (Pr. 920), C38 (Pr. 932) to C41 (Pr. 933)]
You can set the magnitude (slope) of the torque as desired in relation to the torque setting signal
(0 to 5VDC, 0 to 10V or 4 to 20mA).
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 torque at minimum set point signal, minimum output torque at
maximum set point signal)
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".
Change functions of analog input terminal
In the initial setting status, terminal 1 and terminal 4 used for analog input are respectively set
to speed setting auxiliary (speed limit auxiliary) and speed command (speed limit). To use an
analog input terminal as torque command, torque limit input or magnetic flux command input,
set Pr. 868 "Terminal 1 function assignment" and Pr. 858 "Terminal 4 function assignment" to
change functions. (Refer to section 6.20.1).
Pr.
No.
Name
Initial
Value
Setting
Range
Description Parameters referred to
Refer to
Section
241
Analog input display unit
switchover
0
0 Displayed in % Select the unit of
analog input
display.
20
73
267
79
858
868
Acceleration/
deceleration
reference
frequency
Analog input
selection
Terminal 4 input
selection
Operation mode
selection
Terminal 4 func-
tion assignment
Terminal 1 func-
tion assignment 6.11.1
6.20.2
6.20.2
6.22.1
6.20.1
6.20.1
1
Displayed in
V/mA
C16
(919)
Terminal 1 bias command
(torque/magnetic flux)
0 % 0–400%
Set the torque (magnetic flux) on
the bias side of terminal 1 input.
C17
(919)
Terminal 1 bias
(torque/magnetic flux)
0% 0–300%
Set the converted % of the bias
side voltage (current) of terminal1
input.
C18
(920)
Terminal 1 gain command
(torque/magnetic flux)
150% 0–400%
Set the torque (magnetic flux) of
the terminal 1 input gain
(maximum).
C19
(920)
Terminal 1 gain
(torque/magnetic flux)
100% 0–300%
Set the converted % of the gain
side voltage of terminal 1 input.
C38
(932)
Terminal 4 bias command
(torque/magnetic flux)
0% 0–400%
Set the torque (magnetic flux) on
the bias side of terminal 4 input.
C39
(932)
Terminal 4 bias
(torque/magnetic flux)
20% 0–300%
Set the converted % of the bias
side current (voltage) of terminal
4 input.
C40
(933)
Terminal 4 gain command
(torque/magnetic flux)
150% 0–400%
Set the torque (magnetic flux) of
the terminal 4 input gain
(maximum).
C41
(933)
Terminal 4 gain
(torque/magnetic flux)
100% 0–300%
Set the converted % of the gain
side current (voltage) of terminal
4 input.
Sensorless Sensorless Sensorless Vector Vector Vector