Response Level Of Analog Input And Noise Elimination - Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual

• How to calculate the set frequency when the override function is used:
Set frequency (Hz) = Main speed setting frequency (Hz) ×
Main speed setting frequency (Hz): Terminals 1 or 4 input, multi-speed setting
Compensation (%): Terminal 2 input
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 473
5.12.4 Response level of analog input and noise
elimination
The response level and stability of frequency command/torque command using the analog input signal (terminal 1, 2, or 4) can
be adjusted.
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
480
5. PARAMETERS
5.12 (T) Multi-function input terminal parameters
Initial value
(50% to 150%)
2.5V 5V
(5V) (10V)
page 473
selectionpage 391
Name Initial value
1
9999
9999
9999
9999
100%
Compensation (%)
100(%)
• 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.
90
60
45
30
15
0
0 2.5
Terminal 1 input voltage (V)
for the setting.)
Setting range
Set the primary delay filter time constant to the analog input
0 to 8 command. If the setting is too large, response becomes
slow.
Set the primary delay filter time constant to the external
0 to 5 s
speed command (analog input command).
9999 As set in Pr.74.
Set the primary delay filter time constant to the external
0 to 5 s
torque command (analog input command).
9999 As set in Pr.74.
Second function of Pr.822 (enabled when the RT signal is
0 to 5 s, 9999
ON)
Second function of Pr.826 (enabled when the RT signal is
0 to 5 s, 9999
ON)
Set offset for the analog speed input (terminal 2). The motor
0 to 200% is prevented from rotating due to noise in the analog input
or other factors when a zero speed command is given.
Terminal 2 5VDC
input(150%)
Terminal 2 2.5VDC
input(100%)
Terminal 2 0V
input(50%)
5
Description