Fuji Electric ALPHA5 Smart, User Manual

Page: 390 / 636

CHAPTER 7 MAINTENANCE AND INSPECTION
7-22
Troubleshooting
7
Contact us.
Check the travel amount per pulse. Check the setting of electronic gear.
Abnormal
Not abnormal
Not abnormal
The position shifts from an
intended one in pulse operation.
There is a mechanical abnormality.
(1) Check the machine for overload or
mechanical slip, etc.
Abnormal
Check the pulses of PLC output and amplifier
command integration.
PLC output pulse = command integration pulse
PLC output pulse ≠ command
integration pulse (1) Check the wiring for pulses.
(2) Check noise occurrence.
(3) Check PA1_03 (command pulse form
selection).
Select "1" (semi auto) in PA1_13 (tuning
mode selection) and set the PA1_14
parameter appropriately.
Extend the acceleration/deceleration time.
(Reference: The acceleration/deceleration
torque becomes 250% or less.)
Not abnormal
Not abnormal
Check the machine for backlash or
mechanical slip, etc.
Contact us.
Check the acceleration/deceleration torque.
Max. 300% torque is required.
The motor does not operate in a
smooth manner (operates
choppily).
There is a mechanical abnormality.
Abnormal
Check PA1_14 (load inertia ratio).
Moment ratio ≧ 50
Moment ratio
＜
50
Inertia ratio ≥ 50
300% or more