6 Maintenance
6.7 Troubleshooting
6-12
162068-1CD
162068-1CD
MH-SERIES
POSITIONER
6.7
Troubleshooting
6.7.1
MH-Series SIGMA-5 Positioner
6.7.2
MotoMount
6.7.2.1
High Duty Cycles
High duty cycles under heavy loads and/or dirty operating conditions may
cause the drive bushing to wear. This may be indicated by an increase in
the tooling position repeatability. Call Yaskawa Motoman Customer
Service for details.
Table 6-4: Troubleshooting
Symptom
Probable Cause
Corrective Action
Motor does not start
Loose connection
Check all wire connections.
Incorrect wiring
Check that system has been
wired correctly.
Overload
Reduce load or reduce
unbalanced load.
Unstable operation
Incorrect wiring
Inspect and correct wiring
across motor terminals L1,
L2, L3, and PE.
Motor overheats
Excessive ambient
temperature
Reduce ambient
temperature below 40° C
(104° F). Positioner has an
operating range of 0 to 45°
C (32 to 113°F).
Motor surface is dirty
Clean motor surface.
Motor overloaded
Reduce load or unbalanced
load.
Unusual noise
Motor loosely mounted
Tighten mounting bolts.
Positioners misaligned
Realign headstock/tailstock
(see Section 4.4.3,
"Leveling the Tailstock")
Noisy bearing
Check alignment, noise of
bearing, lubrication. Call
Yaskawa Motoman
Customer Service.
Weld quality bad
Brushes misaligned
Remove brush(s) and
reinstall them properly.
Recheck as needed.
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