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Chapter 11 Troubleshooting
11–14
Alarm check timing
f1 f2 f3 f4
Alarm No.
2D
Date error:
An error was detected within one rotation position of an absolute position linear
position linear scale connected to the MAIN side.
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{ { {
Investigation details Investigation results Remedies
1 Check items 3 and following for alarm
No. "2A".
Alarm check timing
f1 f2 f3 f4
Alarm No.
2E
ROM/RAM error:
A ROM/RAM error was detected in the absolute position linear scale connected to
the MAIN side.
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{ { {
Investigation details Investigation results Remedies
1 Check items 3 and following for alarm
No. "2A".
Alarm check timing
f1 f2 f3 f4
Alarm No.
2F
Serial detector communication error:
Communication was cut off with detector of the absolute position linear scale
connected to the MAIN side.
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{ { {
Investigation details Investigation results Remedies
1 Check items 2 and following for alarm
No. "18".
Alarm check timing
f1 f2 f3 f4
Alarm No.
31
Overspeed:
Movement was carried out at a speed exceeding the linear motor's tolerable speed.
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{ { {
Investigation details Investigation results Remedies
The machine was operating. Investigate item 4. 1 Check whether the machine was
operating when the alarm occurred.
The machine was not operating. Investigate item 2.
The machine was operating. Investigate item 3. 2 Check whether the operation is normal
at low-speeds.
The machine was not operating. Check the precautions for turning the
power ON.
• Wiring check
• Parameter check
The speed is too high. Lower the speed to below the rated
speed.
3 Check whether the rapid traverse speed
is too high.
The speed is set below the rated speed. Investigate item 4.
A value that is 80% or more of the max.
value is displayed.
Reduce the rapid traverse time constant
so that the current value on the Servo
Monitor screen is 80% or less of the max.
value during rapid traverse
acceleration/deceleration.
4 Check whether the acceleration/
deceleration constant is too small.
•
Check the current value display on
the Servo Monitor screen.
The value is 80% or less of the max.
value.
Investigate item 5.
5 Check items 2 and following for alarm
No. "18".
CAUTION
To prevent trouble, when changing the motor and driver combination, avoid
driving a driver with a larger capacity than the specified driver using the motor.
The motor could be demagnetized. Note that this combination can be used for
checking in the emergency stop state. The motor can be driven with a driver
with a capacity smaller than the specifications.