Mitsubishi Electric FR-A800 Series Instruction Manual page 519

*1 When Pr.573 ≠ "9999" and the terminal 4 (terminal 2) input is calibrated to 2 mA or less in C2 (Pr.902) (C5 (Pr.904)), the operation set in Pr.573
is applied to the frequency at the input of 2 mA or less.
NOTE
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
 Continuing operation when the analog current input is lost (Pr.573 = "1,
4, 11, 14, 21, or 24", and Pr.777)
• When Pr.573 = "1, 11, or 21", operation continues at the output frequency before the current input loss.
• When Pr.573 = "4, 14, or 24" and Pr.777 ≠ "9999", operation continues at the frequency set in Pr.777.
• When the start command is turned OFF during current input loss, the inverter output decelerates the motor to a stop
immediately, and the operation is not restarted even if a start command is input again.
• When the current input is restored, the LF signal is turned OFF, and operation is performed according to the current input.
• The following is the operation example during External operation.
Output frequency
Analog input
20mA
4mA
STF
LF signal
• The following is the operation example during PID control (reverse action) operation.
Output frequency
20mA
Set point (fixed)
Measured value
4mA
STF
LF signal
PID signal
NOTE
• When the setting is changed to the continuous operation (Pr.573 = "1, 4, 11, 14, 21, or 24") after the input current loss, the
frequency before loss is regarded as 0 Hz.
 Fault output (Pr.573 = "2, 12, or 22")
• When the analog current input becomes 2 mA or lower, the protective function E.LCI (4 mA input fault) is activated and the
output is shut off.
518
5. PARAMETERS
5.12 (T) Multi-function input terminal parameters
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2mA
On during input decrease
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Pr.573=1, 11, 21 : Operation continued with the frequency before being lost
Pr.573=4, 14, 24 : Operation continued with Pr.777 setting
Return
Input current
decrease
3mA
Pr.573=1, 11, 21 : Operation continued with the frequency before being lost
Pr.573=4, 14, 24 : Operation continued with Pr.777 setting
Input current
decrease
Return
3mA
2mA
Time
Time