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MELSEC-Q
15 TROUBLESHOOTING
Classification
of errors
Error
code
Error name Error
Operation status at error
occurrence
935
Speed-position
function selection
error
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.
936
External input signal
selection error
The set range of the detailed parameter
1 "External input signal selection" is
outside the setting range.
937
Forced stop
valid/invalid setting
error
The set range of the detailed parameter
1 "Forced stop valid/invalid setting" is
outside the setting range.
The QD75 READY signal (X0) is
not turned ON.
950
Acceleration time 1
setting error
The set range of the detailed parameter
2 "Acceleration time 1" is outside the
setting range.
951
Acceleration time 2
setting error
The set range of the detailed parameter
2 "Acceleration time 2" is outside the
setting range.
952
Acceleration time 3
setting error
The set range of the detailed parameter
2 "Acceleration time 3" is outside the
setting range.
953
Deceleration time 1
setting error
The set range of the detailed parameter
2 "Deceleration time 1" is outside the
setting range.
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.)
954
Deceleration time 2
setting error
The set range of the detailed parameter
2 "Deceleration time 2" is outside the
setting range.
955
Deceleration time 3
setting error
The set range of the detailed parameter
2 "Deceleration time 3" is outside the
setting range.
956
JOG speed limit
value error
• The set range of the detailed
parameter 2 "JOG speed limit value"
is outside the setting range.
• The set range of the detailed
parameter 2 "JOG speed limit value"
exceeds the speed limit.
957
JOG acceleration
time selection setting
error
The set range of the detailed parameter
2 "JOG acceleration time selection
setting" is outside the setting range.
958
JOG deceleration
time selection setting
error
The set range of the detailed parameter
2 "JOG deceleration time selection
setting" is outside the setting range.
Parameter
setting range
errors
959
Acceleration/
deceleration process
selection setting
error
The set range of the detailed parameter
2 "Acceleration/deceleration process
selection setting" is outside the setting
range.
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.)