Mitsubishi Electric MELDAS MDS-B Series Instruction Manual page 170

Date error:
Alarm No.
An error was detected within one rotation position of an absolute position linear
2D
position linear scale connected to the MAIN side.
Investigation details
1 Check items 3 and following for alarm
No. "2A".
ROM/RAM error:
Alarm No.
A ROM/RAM error was detected in the absolute position linear scale connected to
2E
the MAIN side.
Investigation details
1 Check items 3 and following for alarm
No. "2A".
Serial detector communication error:
Alarm No.
Communication was cut off with detector of the absolute position linear scale
2F
connected to the MAIN side.
Investigation details
1 Check items 2 and following for alarm
No. "18".
Overspeed:
Alarm No.
Movement was carried out at a speed exceeding the linear motor's tolerable speed.
31
Investigation details
1 Check whether the machine was
operating when the alarm occurred.
2 Check whether the operation is normal
at low-speeds.
3 Check whether the rapid traverse speed
is too high.
4 Check whether the acceleration/
deceleration constant is too small.
•
Check the current value display on
the Servo Monitor screen.
5 Check items 2 and following for alarm
No. "18".
CAUTION
Chapter 11 Troubleshooting
Investigation results
Investigation results
Investigation results
Investigation results
The machine was operating.
The machine was not operating.
The machine was operating.
The machine was not operating.
The 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.
The value is 80% or less of the max.
value.
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.
Investigate item 4.
Investigate item 2.
Investigate item 3.
Check the precautions for turning the
power ON.
• Wiring check
• Parameter check
Lower the speed to below the rated
speed.
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.
Investigate item 5.
11–14
Alarm check timing
f1 f2 f3 f4
–
Remedies
Alarm check timing
f1 f2 f3 f4
–
Remedies
Alarm check timing
f1 f2 f3 f4
–
Remedies
Alarm check timing
f1 f2 f3 f4
–
Remedies