If The Module Ready Flag (Xn3) Does Not Turn On; If The Feram Write Failure Flag (Xna) Has Turned On; If Auto Tuning Does Not Start (If The Auto Tuning Status Flag (Xn4, Xn5) Does Not Turn On); If Auto Tuning Does Not Complete (If The Auto Tuning Status Flag (Xn4, Xn5) Remains To Be On And Does Not Turn Off) - Mitsubishi Q Series User Manual

8 TROUBLESHOOTING

8.8 If the Module READY Flag (Xn3) Does Not Turn ON

8.9 If the FeRAM Write Failure Flag (XnA) Has Turned ON

8.10 If Auto Tuning Does Not Start (If the Auto Tuning Status Flag (Xn4, Xn5) Does Not
Turn ON)
8.11 If Auto Tuning Does Not Complete (If the Auto Tuning Status Flag (Xn4, Xn5) Remains
to Be ON and Does Not Turn OFF)
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Check item
Has an error occurred on the programmable
controller?
Check item
Check item
Are start conditions for auto tuning met?
Has auto tuning been completed abnormally?
Check item
Is the FeRAM's PID constant read/write flag
(buffer memory address: 31) set to 1 (ON)?
Is the FeRAM's PID constant read command
(buffer memory address: 62, 94) set to 1 (With
command)?
Is the set value (SV) set correctly? (Does the
manipulated value (MV) remain 0% since the
set value (SV) is small?)
Corrective action
• Q62HLC hardware fault.
Please consult your sales representative.
Corrective action
• Execute writing into FeRAM again.
If the FeRAM write failure flag (XnA) does
not turn off, it represents Q62HLC hardware
fault.
Please consult your sales representative.
Corrective action
• Check whether the all conditions are met
with referring to Section 3.2.1 (2) (a).
• Check whether the auto tuning has
completed abnormally with referring to
Section 3.2.1 (2) (d).
Corrective action
• Set 0 (OFF) to the Automatic backup setting
after auto tuning of PID constants (buffer
memory address: 63, 95), and turn OFF the
FeRAM's PID constant read/write flag (buffer
memory address: 31).
• Set the FeRAM's PID constant read
command (buffer memory address: 62, 94)
to 0 (Without command).
• Set arbitrary control value to the set value
(SV).
MELSEC-Q
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