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15 TROUBLESHOOTING
Classification
Error
of errors
code
Software stroke limit
922
lower limit
Software stroke limit
923
selection
Software stroke limit
924
valid/invalid setting
Command
925
in-position width
Illegal torque limit
926
setting value
M code ON timing
927
error
Speed changeover
928
mode error
Interpolation speed
Parameter
929
designation method
error
Current value update
930
request error
Manual pulse
932
generator input
mode error
Speed-position
935
function selection
error
Acceleration time 1
950
setting error
Acceleration time 2
951
setting error
Acceleration time 3
952
setting error
Deceleration time 1
953
setting error
Error name
• In the unit of degree, the set range of
the detailed parameter 1 "Software
stroke limit lower limit value" is outside
the setting range.
• In a unit other than degree, the
software stroke limit upper limit value
is smaller than the software stroke
limit lower limit value.
The set range of the detailed parameter
1 "Software stroke limit selection" is
outside the setting range.
The set range of the detailed parameter
1 "Software stroke limit valid/invalid
setting" is outside the setting range.
The set range of the detailed parameter
1 "Command in-position width" is
outside the setting range.
The set range of the detailed parameter
1 "Torque limit setting value" is outside
the setting range.
The set range of the detailed parameter 1
"M code ON signal output timing" is
outside the setting range.
The set range of the detailed parameter
1 "Speed changeover mode" is outside
the setting range.
The set range of the detailed parameter
1 "Interpolation speed designation
method" is outside the setting range.
The set range of the detailed parameter
1 "Current feed value during speed
control" is outside the setting range.
The set range of the detailed parameter
1 "Manual pulse generator input
selection" is outside the setting range.
The detailed parameter 1 "speed-
position function selection" is preset to
2 and the following three conditions are
not satisfied:
1) Unit is "degree".
2) Software stroke limits are invalid.
3) Update current feed value.
The set range of the detailed parameter
2 "Acceleration time 1" is outside the
setting range.
The set range of the detailed parameter
2 "Acceleration time 2" is outside the
setting range.
The set range of the detailed parameter
2 "Acceleration time 3" is outside the
setting range.
The set range of the detailed parameter
2 "Deceleration time 1" is outside the
setting range.
Error
15 - 26
MELSEC-Q
Operation status at error
occurrence
The QD75 READY signal (X0) is
not turned ON.
At start: The system will not
operate.
During operation:
The system stops with the
setting (deceleration
stop/sudden stop) of the
detailed parameter 2
sudden stop selection
(stop group 3).
(Note that the deceleration stop
only occurs during the manual
pulse generator operation.)
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Troubleshooting
