Mitsubishi Electric FR-A760 Series Instruction Manual page 353

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Communication operation and setting
Faults history
Register
40501
Fault history 1
40502
Fault history 2
40503
Fault history 3
40504
Fault history 4
40505
Fault history 5
40506
Fault history 6
40507
Fault history 7
40508
Fault history 8
Data
Description
H00
No alarm
H10
E.OC1
H11
E.OC2
H12
E.OC3
H20
E.OV1
H21
E.OV2
H22
E.OV3
H30
E.THT
H31
E.THM
H40
E.FIN
H50
E.IPF
H51
E.UVT
H52
E.ILF
H60
E.OLT
* Refer to page 389 for details of fault definition.
(7) Pr. 343 Communication error count
You can check the cumulative number of communication errors.
Parameters
343
CAUTION
The number of communication errors is temporarily stored into the RAM. As it is not stored into the EEPROM, performing
a power supply reset or inverter reset clears the value to 0.
(8) Output signal LF "alarm output (communication error warnings)"
During a communication error, the alarm signal (LF signal) is output by open collector output. Assign the used
terminal using any of Pr. 190 to Pr. 196 (output terminal function selection).
Master
Slave
Communication
Error count
(Pr. 343)
Signal LF
CAUTION
The LF signal can be assigned to the output terminal using any of Pr. 190 to Pr. 196. When terminal assignment is changed, the
other functions may be affected. Please make setting after confirming the function of each terminal.
342
Definition
Alarm code list
Data
Description
H70
E.BE
H80
E.GF
H81
E.LF
H90
E.OHT
H91
E.PTC
HA0
E.OPT
HA3
E.OP3
HB0
E.PE
HB1
E.PUE
HB2
E.RET
HB3
E.PE2
HC0
E.CPU
HC1
E.CTE
HC2
E.P24
Setting Range
(Read only)
Alarm data
Alarm data
Not increased
0
OFF
ON
Communication error count is increased in
synchronization with leading edge of LF signal
Read/Write
Read/write
Read
Being 2 bytes in length, the data is stored as
Read
"H00
Read
the low-order 1 byte.
Read
Performing write using the register 40501 batch-
Read
clears the faults history. Set any value as data.
Read
Read
Data
Description
HC4
E.CDO
HC5
E.IOH
HC6
E.SER
HC7
E.AIE
HC8
E.USB
HD0
E.OS
HD1
E.OSD
HD2
E.ECT
HD3
E.OD
HD5
E.MB1
HD6
E.MB2
HD7
E.MB3
HD8
E.MB4
HD9
E.MB5
Minimum Setting Range
1
Normal data
Reply data
1
OFF
Turns off when normal data is received
Alarm data :
Remarks
". The error code can be referrred to in
Data
Description
HDA
E.MB6
HDB
E.MB7
HDC
E.EP
HF1
E.1
HF2
E.2
HF3
E.3
HF6
E.6
HF7
E.7
HFB
E.11
HFD
E.13
Initial Value
0
Alarm data
Normal data
2
ON
Data resulting in
communication error.
Reply data
OFF

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