Response Level Of Analog Input And Noise Elimination - Mitsubishi Electric FR-F820-00046 Instruction Manual

Fr-f800 series
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200
150
Pr.252
100
Pr.253
50
0
0V
Voltage across terminals 2 and 5
NOTE
• To use terminal 4, the AU signal needs to be turned ON.
• To make compensation input for multi-speed operation or remote setting, set Pr.28 Multi-speed input compensation
selection = "1" (with compensation) (initial value "0").
• After changing the Pr.73 setting, check the setting of the voltage/current input selection switch. Incorrect setting may cause a
fault, failure, or malfunction. (Refer to
Parameters referred to
Pr.28 Multi-speed input compensation
Pr.73 Analog input
selectionpage 330
5.9.4
Response level of analog input and noise
elimination
The response level and stability of frequency command using the analog input signal (terminal 1, 2, or 4) can be adjusted.
Pr.
Name
74
Input filter time constant
T002
822
Speed setting filter 1
T003
832
Speed setting filter 2
T005
849
Analog input offset
T007
adjustment
 Block diagram
Terminal 1 (2, 4) input
• Example) When Pr.73 = "5"
By the terminal 1 (main speed) and terminal 2 (auxiliary) input, the setting
frequency is set as shown in the figure below.
Initial value
(50% to 150%)
2.5V
5V
(5V)
(10V)
page 330
selectionpage 249
Initial value
Setting range
1
0 to 8
0 to 5 s
9999
9999
9999
0 to 5 s, 9999
100%
0 to 200%
Pr.822 = 9999
RT-OFF
Pr.822 ≠ 9999
RT-ON
Pr.832 = 9999
Pr.832 ≠ 9999
90
60
45
30
15
0
0
2.5
Terminal 1 input voltage (V)
for the setting.)
Set the primary delay filter time constant to the analog input
command. If the setting is too large, response becomes
slow.
Set the primary delay filter time constant to the external
speed command (analog input command).
As set in Pr.74.
Second function of Pr.822 (enabled when the RT signal is
ON)
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.74
Pr.822
Pr.832
5.9 (T) Multi-function input terminal parameters
Terminal 2 5VDC
input(150%)
Terminal 2 2.5VDC
input(100%)
Terminal 2 0V
input(50%)
5
Description
Speed command
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
337

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