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MELSEC-Q
15 TROUBLESHOOTING
Classification
of errors
Error
code
Error name Error Operation status at error occurrence
981 OPR direction error
The set range of the OPR basic
parameter "OPR direction" is outside
the setting range.
982
OP address setting
error
The set range of the OPR basic
parameter "OP address" is outside
the setting range.
983 OPR speed error
• The set range of the OPR basic
parameter "OPR speed" is outside
the setting range.
• The set range of the OPR basic
parameter "OPR speed" is smaller
than the bias speed at start.
984 Creep speed error
• The set range of the OPR basic
parameter "Creep speed" is
outside the setting range.
• The set range of the OPR basic
parameter "Creep speed" is larger
than the OPR speed.
• The set range of the OPR basic
parameter "Creep speed" is
smaller than the bias speed at
start.
985 OPR retry error
The set range of the OPR basic
parameter "OPR retry" is outside the
setting range.
990 OPR dwell time error
The set range of the OPR detailed
parameter "OPR dwell time" is
outside the setting range.
991
Setting for the
movement amount
after near-point dog
ON error
The set range of the OPR detailed
parameter "Setting for the movement
amount after near-point dog ON" is
outside the setting range.
992
OPR acceleration
time selection error
The set range of the OPR detailed
parameter "OPR acceleration time
selection" is outside the setting
range.
993
OPR deceleration
time selection error
The set range of the OPR detailed
parameter "OPR deceleration time
selection" is outside the setting
range.
995
OPR torque limit
value error
• The set range of the OPR detailed
parameter "OPR torque limit value"
is outside the setting range.
• The OPR detailed parameter "OPR
torque limit value" has exceeded
the detailed parameter 1 "Torque
limit setting value".
996
Deviation counter
clear signal output
time setting error
The set range of the OPR detailed
parameter "Deviation counter clear
signal output time" is outside the
setting range.
Parameter
997
Speed designation
during OP shift error
The set range of the OPR detailed
parameter "Speed designation
during OP shift" is outside the setting
range.
The QD75 READY signal (X0) is not
turned ON.