Analog Input Responsiveness And Noise Elimination - Mitsubishi Electric FR-A820-00046 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
T002
822
T003
826
T004
832
T005
836
T006
849
T007
Block diagram
Terminal 1 (2, 4 ) input
Fig. 5-201:
5 - 416
Name
Input filter time constant
Speed setting filter 1
Torque setting filter 1
Speed setting filter 2
Torque setting filter 2
Analog input offset adjustment
RT-OFF
RT-ON
Terminal 1 (2, 4) input block diagram
Initial value Setting range
1 0 to 8
0 to 5 s
9999
9999
0 to 5 s
9999
9999
9999 0 to 5 s, 9999
9999 0 to 5 s, 9999
100% 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 ≠ 9999
Pr. 836 = 9999
Pr. 836 ≠ 9999
Parameters
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
Speed command
Pr. 832
Pr. 836
I002646E