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Troubleshooting; Checking Communication Status Based On Led Display - Mitsubishi Electric FX5 User Manual

Melsec iq-f series.
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Parameter
Name
No.
C6
Terminal 4 frequency setting bias
126
Terminal 4 frequency setting gain frequency
C7
Terminal 4 frequency setting gain
C22
Frequency setting voltage bias frequency
(Built-in potentiometer)
C23
Frequency setting voltage bias
(Built-in potentiometer)
C24
Frequency setting voltage gain frequency
(Built-in potentiometer)
C25
Frequency setting voltage gain
(Built-in potentiometer)
FREQROL-V500 series
Second parameter specification codes for parameter numbers 902 to 905 and 917 to 920
Parameter No.
Name
902
Speed setting No. 2 bias
903
Speed setting No. 2 gain
904
Torque command No. 3 bias
905
Torque command No. 3 gain
917
No.1 terminal bias (speed)
918
No.1 terminal gain (speed)
919
No.1 terminal bias (torque/magnetic flux)
920
No.1 terminal gain (torque/magnetic
flux)
Specify inverter parameter number in (s2) ((s3) in IVBWR instruction) as show below.
• In the case of parameter number 0 to 999, write the parameter number as is.
• In the case of parameter number 1000 to 9999, write parameter number + 10000. (Example: When
parameter number is 1234, specify K11234)
4.9

Troubleshooting

This chapter explains troubleshooting and error codes.

Checking communication status based on LED display

Check the status of the LED display of [RD] and [SD] on the CPU module or the communication board/communication
adapter.
LED display status
RD
On
On
Off
Off
If signals are being sent and received normally for inverter communication, both LEDs flash brightly.
If they do not flash, check the wiring and the communication settings.
Second parameter specification code
[Value to be specified in (s2) in IVRD and IVWR instruction for parameter
No. (decimal)]
1904
905
1905
922
1922
923
1923
Second parameter specification code
[Value to be specified in (s2) in IVRD and IVWR instruction for parameter No.
(decimal)]
Offset/Gain (H00)
902
903
904
905
917
918
919
920
SD
On
Off
On
Off
Analog (H01)
1902
1903
1904
1905
1917
1918
1919
1920
Operation status
Data is being transmitted and received.
Data is being received but not being transmitted.
Data is being transmitted but not being received.
Data is neither being transmitted nor being received.
4 INVERTER COMMUNICATION
Analog value of
terminal (H02)
2902
2903
2904
2905
2917
2918
2919
2920
119
4.9 Troubleshooting
4

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