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MELSEC-Q
15 TROUBLESHOOTING
15.3 List of warnings
The following table shows the warning details and remedies to be taken when a
warning occurs.
15.3.1 QD75 detection warning
Classification
of warnings
Warning
code
Warning name Warning
Operation status at warning
occurrence
— 000 (Normal status) — —
100
Start during
operation
The start request is issued while the
axis is BUSY.
Continue the operation.
104 Restart not possible
The restart command is issued when
the axis operation status is not
"Stopped".
Continue the operation.
109 Teaching in BUSY
The teaching request is issued while
the axis is BUSY.
The warning is issued for the axis
designated at the time of the teaching
request.
110
Less than minimum
speed
The overridden speed becomes “0”.
The system is controlled with the
currently executing unit of 1.
111 In PLC READY
The request for writing to the flash
ROM is issued when the PLC
READY is turned ON (at the time of
teaching request).
The warning for axis 1 is issued.
112
Illegal override
value
A value other than 1 to 300 is set for
the override value.
• Controlled at a setting value of
0 : 100.
• Controlled at a setting value of
301 or over : 300.
113
Outside new torque
value range
A value other than 1 to 500 is set for
the new torque value.
The torque change is not carried out.
Common
warnings
114 Below bias speed
The command speed is below the
bias speed at start.
Programming error between QD75P
and QD75M.
Operate by the bias speed at start.
300
Speed change
during deceleration
The speed change request is issued
during deceleration stop with JOG
start signal OFF.
The speed change is not carried out.
JOG
operation
warnings
301
JOG speed limit
value
The new speed value exceeds the
JOG speed limit value when the
speed is changed during operation.
• When the speed exceeds the JOG
speed limit, the JOG operation is
carried out with the JOG speed limit
value.
• While the speed is limited by the
JOG speed limit value, the "Speed
limiting flag" is turned ON.
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