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6.2. Trouble Symptoms and Possible Causes
As shown in [table 6-1], there may be many parts as the cause of one phenomenon.
Refer to next page to determine which part is malfunction.
Table 6-1 Trouble phenomenon and cause
Defect parts
Trouble phenomenon
Overload
Displacement
Abnormal sound occurrence
Noise in operation
Staggering at stop
Irregular twitching
Abnormal deviation
Free fall of an axis
Overheating
Incorrect action and out of
controll movement
[Note 1] Overload ---------
[Note 2] Noise in operation -- Phenomenon which occurs vibration on operation.
[Note 3] Staggering at stop - Phenomenon which gives oscillating motion when the
[Note 4] Irregular twitching --- Phenomenon which gives sporadic twitching when the
Reduction
gear
[Note1]
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[Note 2]
[Note 3]
[Note 4]
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Phenomenon occurring when a load exceeds the rated
motor load. In specific, thermal relay of circuit protector
is tripped.
robot stops.
robot is not in motion.
Brake
Motor
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6-3
6. Trobleshooting
Fulcrum
Encoder
bearing
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