Mitsubishi Electric FR-E800, Инструкция по эксплуатации

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13. (T) Multi-Function Input Terminal Parameters
13.3 Response level of analog input and noise elimination
13.3
Response level of analog input and noise
elimination
The response level and stability of frequency command / torque command using the analog input signal (terminal 2 or 4) can
be adjusted.
 Block diagram
 Analog input time constant (Pr.74)
• Use this parameter to eliminate noise on the frequency setting circuit.
• Increase the filter time constant if the operation is unstable due to noise or other factors.
If the setting is too large, response becomes slow. (The time constant can be between 0 and 8, which are about 2 ms to 1
s.)
Pr. Name Initial value Setting range Description
74
T002
Input filter time constant 1 0 to 8
Set the primary delay filter time constant to the analog input
command. If the setting is too large, response becomes
slow.
822
T003
Speed setting filter 1 9999
0 to 5 s
Set the primary delay filter time constant to the external
speed command (analog input command).
9999 As set in Pr.74 .
826
T004
Torque setting filter 1 9999
0 to 5 s
Set the primary delay filter time constant to the external
torque command (analog input command).
9999 As set in Pr.74 .
832
T005
Speed setting filter 2 9999 0 to 5 s, 9999
Second function of Pr.822 (enabled when the RT signal is
ON)
836
T006
Torque setting filter 2 9999 0 to 5 s, 9999
Second function of Pr.826 (enabled when the RT signal is
ON)
849
T007 Analog input offset
adjustment
100% 0% to 200%
Set offset for the analog speed input (terminal 2). The motor
is prevented from rotating due to noise in the analog input
or other factors when a zero speed command is given.
Pr.836
Speed command
Pr.822 = 9999
Pr.822 ≠ 9999
Pr.826 = 9999
Pr.826
Pr.74
Torque command
Pr.822
Pr.74
Pr.826 ≠ 9999
Pr.832 ≠ 9999
Pr.836 = 9999
Terminal 2 (4) input
RT-OFF
RT-ON
Pr.832 = 9999
Pr.836 ≠ 9999
Pr.832