Response Level Of Analog Input And Noise Elimination; Frequency Setting Voltage (Current) Bias And Gain - Mitsubishi Electric FR-CS84-012 Instruction Manual

 Performing forward/reverse rotation with the analog input (polarity
reversible operation)
• Setting "10" in
Pr.73
Reverse
rotation
Pr.125
Reversible
Not
reversible
C2(Pr.902)
0 2.5V
C3(Pr.902) C4(Pr.903)
Reversible operation example
Parameters referred to
Pr.22 Stall prevention operation level
Pr.125 Terminal 2 frequency setting gain frequency, Pr.126 Terminal 4 frequency setting gain frequency
5.8.2 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.
Pr.
74
Input filter time constant
T002
 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 5 ms to 1
s.)
Parameters referred to
Pr.73 Analog input selection
Pr.125, C2 to C4 (bias and gain of the terminal 2 frequency setting)
5.8.3

Frequency setting voltage (current) bias and gain

The magnitude (slope) of the output frequency can be set as desired in relation to the frequency setting signal (0 to 5 VDC, 0
to 10 VDC, or 4 to 20 mA).
134
5. PARAMETERS
5.8 (T) Multi-function input terminal parameters
enables the polarity reversible operation.
Forward
rotation
Terminal 2
0 input
5V
page 119
Name Initial value
1
page 131
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.
page 134
page 134
Description