Mitsubishi Electronics QCPU Welding System User Manual


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Appendix 3 SPECIAL RELAY LIST
(1) Diagnostic Information
TableApp.3.2 Special relay
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU
SM0 Diagnostic errors
OFF : No error
ON : Error
• Turns ON if an error occurs as a result of diagnosis.
(Includes when an annunciator is ON, and when an
error is detected with CHK instruction)
• Remains ON even if the condition is restored to
normal thereafter.
S (Error) New
Qn(H)
QnPH
QnPRH
• Turns ON if an error occurs as a result of diagnosis.
(Includes when an annunciator is ON)
• Remains ON even if the condition is restored to
normal thereafter.
S (Error) New
Q00J/Q00/Q01
QnU
SM1 Self-diagnostic error
OFF : No self-diagnosis
errors
ON : Self-diagnosis
• Turns ON if an error occurs as a result of diagnosis.
(Does not include when an annunciator is ON or
when an error is detected by the CHK instruction)
• Remains ON even if the condition is restored to
normal thereafter.
S (Error) M9008
Qn(H)
QnPH
QnPRH
• Turns ON if an error occurs as a result of diagnosis.
(Does not include when an annunciator is ON)
• Remains ON even if the condition is restored to
normal thereafter.
S (Error) New
Q00J/Q00/Q01
QnU
SM5
Error common
information
OFF : No error common
information
ON : Error common
information
• When SM0 is ON, turns ON if there is error common
information
S (Error) New
QCPU
SM16
Error individual
information
OFF : No error individual
information
ON : Error individual
information
• When SM0 is ON, turns ON if there is error individual
information
S (Error) New
SM50 Error reset
OFF ON: Error reset
Conducts error reset operation U New
SM51 Battery low latch
OFF : Normal
ON : Battery low
• Turns ON if battery voltage at CPU module or
memory card drops below rated value.
• Remains ON even if the battery voltage returns to
normal thereafter.
• Synchronizes with the BAT. LED.
S (Error) M9007
Qn(H)
QnPH
QnPRH
QnU
• Turns ON if battery voltage at CPU module drops
below rated value.
• Remains ON even if the battery voltage returns to
normal thereafter.
Synchronous with ERR. LED
S (Error) New Q00J/Q00/Q01
SM52 Battery low
OFF : Normal
ON : Battery low
• Same as SM51, but turns OFF subsequently when
battery voltage returns to normal.
S (Error) M9006
QCPU
SM53
AC/DC DOWN
detection
OFF : AC/DC DOWN not
detected
ON : AC/DC DOWN
detected
Turns ON if an instantaneous power failure of within
20ms occurs during use of the AC power supply
module.
Reset when the power supply is switched OFF, then
ON.
S (Error) M9005
Turns ON if an instantaneous power failure of within
10ms occurs during use of the DC power supply
module.
Reset when the power supply is switched OFF, then
ON.