Mitsubishi Electric FR-A700 Technical Manual page 269

(6) Torque command by 16 bit digital input
[Pr. 804 = 4, Pr. 304, 305, 447, 448]
Torque command by 12 bit digital input is given when
[Pr. 304 = 4] and 16 bit digital input is given when [Pr.
304 = 14] using the FR-A7AX (plug-in option). When
[Pr. 804 = 4] and a value other than 4 or 14 is set in
[Pr. 304], torque command value = 0.
The digital torque command is input only by binary
input. The input signal uses the last 15 (11) bits as
torque command and the most significant bit as sign.
When 16bit is selected
Bit15
Sign bit
0 to 7FFF
0 : positive 1 : negative
Set the torque command value when the input signal
is "0" in [Pr. 447] and the torque command value
when the input signal is 7FFF
Torque command value
[Pr. 448] 150%
7FFF
H
(7FF )
H
0
-150%
Most significant bit = 1
The input signal is used as the torque command
value when [Pr. 448 = 9999].
Torque command value
400%
7FFF 190
H H
(7FF ) (400)
H
0
-400%
Most significant bit = 1
(7) Torque characteristic in the constant
power range [Pr. 803].
Due to the motor characteristics, torque is reduced at
or above the base frequency. Set "1" in [Pr. 803
Constant power range torque characteristic selection]
when you want to keep the torque to be constant
even at or above the base frequency.
Torque
Constant power range
Constant torque range
Base speed
Bit0
or 0 to 190 (400)
H
H
(7FF ) in [Pr. 448].
H H
Initial value
Digital
7FFF
H
input signal
[Pr. 447]
(7FF )
H
Most significant bit = 0
190 7FFF
H H Digital
(400) (7FF )
H input signal
Most significant bit = 0
[Pr.803 = 1]:
constant torque
command
[Pr.803 = 0]:
constant power
command
(torque reduction)
Speed
303
PARAMETER
2