Checking Of Current Input On Analog Input Terminal - Mitsubishi Electric FR-CS82S-025 Instruction Manual

5.8.4

Checking of current input on analog input terminal

When current is input to the analog input terminal 4, the input current can be checked and the operation when the input falls
below the specified level (the analog current input is lost) can be selected. The operation can be continued even when the
analog current input is lost.
Pr. Name
573
4 mA input check selection
T052
778
4 mA input check filter
T054
 Analog current input loss condition (Pr.778)
• When the current input to terminal 4 continues to be 2 mA or less for the period set in
analog current input and the Alarm (LF) signal is turned ON. The LF signal turns OFF when the current input becomes 3
mA or higher.
• For the LF signal, set "98 (positive logic) or 198 (negative logic)" in
function.
Set frequency
50Hz
Current input
decrease detection
*1
2mA 4mA
Normal use range
*1 When Pr.573 ≠ "9999" and the terminal 4 input is calibrated to 2 mA or less in C2 (Pr.902), 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.195 (Output terminal function selection) may affect the other functions. Set
parameters after confirming the function of the terminal.
 Continuing operation when the analog current input is lost (Pr.573 = "1")
• When = "1", operation continues at the output frequency before the current input loss.
Pr.573
• 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.
Initial Setting
value range
1
2
9999
3
9999
0 s 0 to 10 s
C6 = 0%
20mA
Analog input
Description
Operation continues with output frequency before the current
input loss.
The protective function E.LCI (4 mA input fault) is activated
when the current input loss is detected.
The inverter output decelerates the motor to a stop when the
current input loss is detected. The protective function E.LCI (4
mA input fault) is activated after the motor is stopped.
No current input check
Set the current input loss detection time.
Pr.778
Pr.195 (Output terminal function selection)
5.8 (T) Multi-function input terminal parameters
, it is considered as loss of
to assign the
139
5. PARAMETERS
2
2
3
4
5
6
7
8
9
10