Mitsubishi Electric FR-F740 EC Instruction Manual page 360

Frequency setting by analog input (terminals 1, 2 and 4)
Fault output (Pr. 573 = "2")
When the analog input current drops to or below 2mA, the fault (E.LCI) is output and the inverter
output is shutoff.
Fault output after deceleration to stop (Pr. 573 = "3")
When the analog input current drops to or below 2mA, the alarm (LF) is output and the motor de-
celerates to stop.
After it is stopped, the fault (E.LCI) is output.
When the input current rises again during the deceleration (including the cases when the 4mA
current input is invalid or no check is performed for the input current), the motor accelerates
again to the set point and performs normal operation.
Output frequency
Fig. 6-128: During PID control (reverse action, Pr. 573 = 3)
Output frequency
PID signal
Fig. 6-129: During PID control (reverse action, Pr. 573 = 3)
6 - 210
20mA
Set point (fixed)
Measured value
4mA
STF
LF signal
PID signal
ALM signal
20mA
Set point (fixed)
Measured value
4mA
STF
LF signal
(Analog input current is restored during deceleration)
An input current drop is detected and the motor decelerates
E.LCI is output after the motor stops
Input current
decrease
Return
3mA
2mA
An input current drop is detected and the motor decelerates
Normal operation after the current is restored
Input current
decrease
Return
3mA
2mA
OFF during deceleration
Parameter
Time
I002303E
Time
I002304E