Mitsubishi Electric FR-F800 Series Instruction Manual page 370

5.9.7
When current is input to the analog input terminal 2 or 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.
573
4 mA input check selection
T052
777
4 mA input fault operation
T053
frequency
A681
778
T054 4 mA input check filter
A682
 Analog current input loss condition (Pr.778)
• When the current input to terminal 4 (terminal 2) continues to be 2 mA or less for the period set in Pr.778, it is considered
as loss of 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 any parameter from Pr.190 to Pr.196 (Output terminal
function selection) to assign the function to the output terminal.
Set frequency
60Hz
Current input
decrease detection
∗1
2mA
*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.
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Checking of current input on analog input terminal
Initial
Name
value
9999
9999
0 s
When C3 (C6) = 0%
4mA 20mA
Normal use range
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Setting
range
Operation continues with output frequency before
1
the current input loss.
4 mA input fault (E.LCI) is activated when the
2
current input loss is detected.
The inverter output decelerates the motor to a stop
when the current input loss is detected. After the
3
motor is stopped, 4 mA input fault (E.LCI) is
activated.
4 Operation continues at the frequency set in Pr.777.
Operation continues at the output frequency before
11
the current input loss.
4 mA input fault (E.LCI) is activated when the
12
current input loss is detected.
The inverter output decelerates the motor to a stop
when the current input loss is detected. After the
13
motor is stopped, 4 mA input fault (E.LCI) is
activated.
14 Operation continues at the frequency set in Pr.777.
Operation continues with output frequency before
21
the current input loss.
4 mA input fault (E.LCI) is activated when the
22
current input loss is detected.
The inverter output decelerates the motor to a stop
when the current input loss is detected. After the
23
motor is stopped, 4 mA input fault (E.LCI) is
activated.
24 Operation continues at the frequency set in Pr.777.
9999 No current input check
Set the frequency to continue operation when current input is lost.
0 to 590 Hz
(Valid when Pr.573 = "4, 14, or 24")
9999 No current input check when Pr.573 = "4, 14, or 24"
0 to 10 s Set the current input loss detection time.
Analog input
Description
5. PARAMETERS
5.9 (T) Multi-function input terminal parameters
1
2
3
Check the
current input
on terminals 2
4
and 4.
5
Check the
6
current input
on terminal 4.
7
8
Check the
current input
on terminal 2.
9
10
369