Mitsubishi Electric F720PJ-11KF, Manual

Page: 46 / 96

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When setting parameters, refer to the instruction manual (applied) and understand instructions.
(2) Communication EEPROM write selection (Pr.342)
When parameter write is performed from PU connector
connected to the inverter, parameter’s storage device can be
changed from RAM to only RAM. When
performing parameter change frequently, set "1" in
Pr. 342 .
(3) MODBUS RTU communication specifications
(Pr.343, Pr.549)
(4) operation selection at communication error
(Pr.502, Pr.779)
For communication using RS-485 terminals, operation at a
communication error can be selected. The operation is
active under the Network operation mode.
You can set the magnitude (slope) of the output frequency as desired
in relation to the frequency setting signal (0 to 5VDC, 0 to 10V or 4 to
20mA).
The
C22(Pr.922) to C25(Pr.923) settings can be used when the
operation panel (PA02) of FR-E500 series is connected using a cable.
The built-in potentiometer of the operation panel can be calibrated.
(1) Change the frequency at maximum analog input.
(Pr.125, Pr.126)
Set a value in Pr. 125 (Pr. 126) when changing only the
frequency setting (gain) of the maximum analog input power
(current). (Other calibration parameter settings can be used
without any change.)
(2) Analog input bias/gain calibration
(C2(Pr.902) to C7(Pr.905))

The "bias" and "gain" functions are used to adjust the
relationship between the input signal entered from outside
the inverter to set the output frequency, e.g. 0 to 5V, 0 to
10V or 4 to 20mADC, and the output frequency.
(3) Analog input display unit changing (Pr.241)

You can change the analog input display unit (%/V/mA) for
analog input bias/gain calibration.
Pr.
Number
Setting
Range
Description
343

Display the number of communication
errors during MODBUS RTU
communication. (Reading only)
549
0 (initial
value)
Mitsubishi inverter (computer link) protocol
1 MODBUS RTU protocol
Pr.
Number
Setting
Range
Description
At error
occurrence
Indication
Fault
output
At error
removal
502
0
(initial
value)
Coasts to
stop
E.PUE Output
Stops
(E.PUE)
1
Decelerates
to stop
E.PUE
after stop Output
after stop Stops
(E.PUE)
2
Decelerates
to stop
E.PUE
after stop Without
output
Restarts
3
Continues
running at
Pr.779

Without
output Operates
normally
779
0 to
400Hz
Motor runs at the specified frequency at a
communication error.
9999
(initial
value)
Motor runs at the frequency used before the
communication error.
125, 126, 241, C2(902) to C7(905), C22(922) to C25(923)
Analog input frequency change and
adjustment (calibration)
Pr.125 Terminal 2 frequency setting gain frequency
Pr.126 Terminal 4 frequency setting gain frequency
Pr.241 Analog input display unit switchover
C2(Pr.902) Terminal 2 frequency setting bias frequency
C3(Pr.902) Terminal 2 frequency setting bias
C4(Pr.903) Terminal 2 frequency setting gain
C5(Pr.904) Terminal 4 frequency setting bias frequency
C6(Pr.904) Terminal 4 frequency setting bias
C7(Pr.905) Terminal 4 frequency setting gain
C22(Pr.922) Frequency setting voltage bias frequency (built-in potentiometer)
C23(Pr.922) Frequency setting voltage bias (built-in potentiometer)
C24(Pr.923) Frequency setting voltage gain frequency (built-in potentiometer)
C25(Pr.923) Frequency setting voltage gain (built-in potentiometer)
C2(Pr. 902)
C3(Pr. 902) C4(Pr. 903)
60Hz
Output frequency (Hz)
0
0
Frequency setting signal
100%
10V
Initial value
Bias
0 5V
Pr. 125
Gain
C5(Pr. 904)
C6(Pr. 904) C7(Pr. 905)
60Hz
Pr. 126
Frequency setting
signal
Initial value
Bias
Gain
0 100% 20
0 4 20mA
Output frequency (Hz)
0 1 5V
0 2 10V