Analog Input Responsiveness And Noise Elimination - Mitsubishi Electric 800 Series Instruction Manual

(T) Multi-Function Input Terminal Parameters
5.12.4
Analog input responsiveness and noise
elimination
The frequency command/torque command responsiveness and stability are adjustable by using the analog input
(terminals 1, 2, and 4) signal.
Pr.
74
Input filter time constant
T002
822
Speed setting filter 1
T003
826
Torque setting filter 1
T004
832
Speed setting filter 2
T005
836
Torque setting filter 2
T006
849 Analog input offset
T007 adjustment
Block diagram
Terminal 1 (2, 4) input
400
PARAMETERS
Name Initial value
1
9999
9999
9999
9999
100%
RT-OFF
RT-ON
Setting range
0 to 8
0 to 5 s
9999
0 to 5 s
9999
0 to 5 s, 9999
0 to 5 s, 9999
0 to 200%
Pr.74
Pr.822 = 9999
Pr.822
Pr.822 9999
Pr.74
Pr.826 = 9999
Pr.826
Pr.826 9999
Pr.832 = 9999
Pr.832
Pr.832 9999
Pr.836 = 9999
Pr.836
Pr.836 9999
Description
The primary delay filter time constant to
the analog input is selectable. The higher
the value, the lower the responsiveness.
Set the primary delay filter time constant
to the external speed command (analog
input command).
Use the Pr.74 setting.
Set the primary delay filter time constant
to the external torque command (analog
input command).
Use the Pr.74 setting.
Second function of Pr.822 (enabled when
the RT signal is ON)
Second function of Pr.826 (enabled when
the RT signal is ON)
Make the analog speed input (terminal 2)
have an offset. This prevents the motor
from rotating by noise to the analog input
or another cause on the speed 0
command.
Speed command
Torque command