Mitsubishi Electric FR-A700 Instruction Manual page 561

Parameter
Time constant of analog torque command input (Pr. 826, Pr. 836)
Set the time constant of the primary delay filter relative to the external torque command (analog
input command) using Pr. 826 "Torque setting filter 1".
Set a large time constant value when you want to delay the tracking of the torque command,
when the analog input voltage fluctuates, etc.
When you want to change time constant when switching two motors with one inverter, etc., use
Pr. 836 "Torque setting filter 2".
Pr. 836 "Torque setting filter 2" is made valid when the RT signal turns on.
Offset adjustment of analog speed command input (Pr. 849)
When speed command by analog input is set, create the range where the motor remains stop
to prevent malfunction at very low speed.
On the assumption that the Pr. 849 setting 100% as 0, the offset voltage is offset as follows:
100% < Pr. 849 ........positive side
100% > Pr. 849 ........negative side
The offset voltage is found by the following formula:
Offset voltage [V]
According to the Pr. 73 setting
0 %
FR-A700 EC
Frequency/torque setting by analog input (terminals 1, 2 and 4)
Voltage at 100 % Pr. 849 100
×
---------------------------------- -
=
( )
5 or 10 V
Slope determined
according to Pr.125
and C2 to C4
Slope does not
change
Pr.849 setting
0 % 100 %
(10 V or 5 V)
100 % 200 %
–
100
Fig. 6-185:
Offset-Einstellung
I001611E
6 - 381