Mitsubishi Electric RD77MS2 User Manual page 586

Warning code Warning name
(Hexadecimal)
0989H Outside manual
pulse generator
speed limit value
0990H Deceleration/stop
speed change
0991H Speed limit value
over
0992H M code ON signal
ON
0993H Speed-position
switching (during
acceleration) signal
ON
0994H Insufficient remaining
distance
0995H Insufficient remaining
distance
14 TROUBLESHOOTING
584
14.4 List of Warning Codes
Error details and causes
The manual pulse generator speed exceeds "[Pr.123]
Manual pulse generator speed limit value".
[Operation status at warning occurrence]
• When the speed exceeds the detailed parameter 2
"Manual pulse generator speed limit value", the
manual pulse generator operation is executed
following the detailed parameter 2 "Manual pulse
generator speed limit mode".
• "In speed limit flag" is turned ON while the speed is
controlled with the detailed parameter 2 "Manual pulse
generator speed limit value".
The speed change request is issued during deceleration
stop.
[Operation status at warning occurrence]
The speed change is not carried out.
*2
• Setting speeds exceed the speed limit value when
starting/restarting the positioning or when changing
*3
the speed at the positioning . (At the interpolation
control, either of reference axes or interpolation axes
exceeds the speed limit value.)
• "[Cd.140] Command speed at speed control mode"
exceeds "[Pr.8] Speed limit value" during the speed
control mode.
• "[Cd.146] Speed limit value at torque control mode"
exceeds "[Pr.8] Speed limit value" during the torque
control mode.
• "[Cd.147] Speed limit value at continuous operation to
torque control mode" exceeds "[Pr.8] Speed limit
value" during the continuous operation to torque
control mode.
[Operation status at warning occurrence]
[Position control mode]
• The speed is controlled with the speed limit value.
• The "[Md.39] In speed limit flag" is turned ON.
[Speed control mode/Torque control mode/Continuous
operation to torque control]
• The speed is controlled with the speed limit value.
(The "[Md.39] In speed limit flag" is not turned ON.)
The M code ON signal is turned ON when the
positioning data is executed.
[Operation status at warning occurrence]
Continues executing the positioning data.
The switching signal for speed-position switching control
(INC mode) is turned ON during acceleration.
[Operation status at warning occurrence]
The operation is continued.
At a continuous operation interrupt request, the distance
required deceleration stop is not long enough.
[Operation status at warning occurrence]
• When a command speed is changed: Change to a
value as near a new speed value as possible.
• When a target position is changed: Adjust the speed
to a value as near the command speed as possible,
and then change to a target position.
(When the operation pattern is a continuous path
control, ignore the operations stated above.)
At a speed change request, the remaining distance is
shorter than the distance required for speed change.
[Operation status at warning occurrence]
• When a command speed is changed: Change to a
value as near a new speed value as possible.
• When a target position is changed: Adjust the speed
to a value as near the command speed as possible,
and then change to a target position.
(When the operation pattern is a continuous path
control, ignore the operations stated above.)
Remedy
Adjust speed of manual pulse generator or "[Cd.20]
Manual pulse generator 1 pulse input magnification"
not to exceed the speed limit value.
Do not carry out the speed change during deceleration
with a stop command, during stoppage, or during
automatic deceleration with position control.
Review each speed so that setting speeds do not
exceed the speed limit value.
Normalize the ON and OFF timings of the "M code
OFF request".
Do not turn ON the speed-position switching signal
during acceleration.
Give a request at the position where there is an
enough remaining distance.
Give a request at the position where there is an
enough remaining distance.