Sumitomo Drive Technologies Cyclo 6000 - 9 Troubleshooting; Reducer Troubleshooting; Motor Troubleshooting

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Cyclo® 6000 Operating and Maintenance Manual
Cyclo® 6000 Cyclo® 6000
Cyclo® 6000 Operating and Maintenance Manual
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9. TROUBLESHOOTING 9. TROUBLESHOOTING
Problem with the Reducer Possible Causes Suggested Remedy
Runs Hot
Overloading
Load exceeds capacity of the
reducer.
Check the rated capacity of the reducer, replace with unit of
sucient capacity or reduce the load.
Improper
lubrication
Insucient lubricant. Check lubricant level and increase to recommended level.
Excessive lubricant. Check lubricant level and reduce to recommended level.
Incorrect lubricant.
Flush old lubricant from the unit and rell with correct
recommended lubricant.
Vibration or
Noise
Loose foundation
bolts
Weak mounting structure.
Inspect mounting of reducer. Tighten loose bolts and/or
reinforce mounting & structure.
Loose hold-down bolts. Tighten bolts.
Worn reduction
components
Load exceeds capacity of
reducer.
If Cycloid discs are damaged, disassemble the Cyclo® portion
and replace discs.
Re-check the rated capacity of the unit.
Bearing failure
Insucient lubricant.
If bearings in Cyclo® portion are damaged, replace the aected
bearings. Clean & ush the reducer and ll with the correct
type and quantity of lubricant.
Load exceeds capacity of
reducer.
Check the rated capacity of the reducer. Replace with unit of
sucient capacity or reduce the driven load.
Insucient
lubricant
Insucient lubricant. Check lubricant level and adjust to recommended level.
Damaged Cyclo®
pins and rollers
Load exceeds capacity of
reducer.
Disassemble Cyclo® portion of reducer and replace ring
gear housing pins and rollers. Check load on reducer.
Output
Shaft Does
Not Turn
Motor shaft
broken
Load exceeds capacity of
reducer or repetitive shock
loading.
Replace broken shaft. Check rated capacity of reducer.
Key missing or
sheared o on
input shaft
Replace key.
Eccentric bearing
broken
Insucient lubricant.
Replace the Eccentric Bearing in the Cyclo® portion. Flush
and rell the unit with the recommended lubricant.
Motor does not
turn
Motor. Refer to the “Motor” portion of this Troubleshooting guide.
Coupling loose or disconnected. Properly align reducer and coupling. Tightening coupling.
Oil Leakage
Worn seals
Caused by dirt or grit entering
the seal area.
Replace the oil seals.
Leakage into
motor
Excessive lubricant.
Check the lubricant level and adjust to the recommended
level.
Air breather clogged.
Clean or replace element, being sure to prevent any dirt from
falling into the reducer.
Improper mounting position,
such as other than designed
mounting angle.
Mount the unit in its designed mounting angle.
9. Troubleshooting
9.1 Reducer Troubleshooting
9.2 Motor Troubleshooting
Problem with the Motor Possible Causes Suggested Remedy
Load Is
Disconnected
But Motor Does
Not Rotate
Makes a
“groaning” sound
Faulty switch contact Adjust the contact
Blown fuse Replace fuse
One phase wire of the power
supply open
Rewire connection
Stator coil open Repair by rewinding or replacing the stator assembly
Stator and rotor touching due to
bearing housing wear
Replace the bearing and bracket
Starts in either
direction when turned
by hand
Three-phase is operating as
singlephase
Consult the power source with a voltmeter
Doesn’t make any
noise
Stator coil open Repair by rewinding or replacing stator assembly
External power failure Contact the local power company
Open connection wire
Faulty Switch contact
Faulty Starter contact
Check the source wiring
Adjust the contacts
Rotates With
The Load
Disconnected
But:
Rotates in the wrong
direction
Connection error
Change any two of the three-phase source
connections
Fuse blows Shorted lead wire Replace fuse and rewire short
Speed does not
increase
Faulty starter contact Replace or adjust starter contact
Makes a “groaning”
sound
Overcurrent/Overheating due to
Rotor and Stator touching
Repair by rewinding or replacing stator assembly
Overcurrent due to one phase of
Stator Coil shorted
Replace the stator winding
Makes a highpitched
“metallic” noise
Faulty bearing Replace the bearing
Rotates When
The Load Is
Disconnected
But When The
Load Is
Connected:
Switch overheats
Insucient switch capacity Replace with switch having the rated capacity
Overload Decrease load to the rated value
Fuse blows Insucient fuse capacity Replace with fuse having the rated capacity
Overheats
Overload Decrease load to rated value
Voltage drop Consult with local power company
Speed suddenly drops
Voltage drop Consult with local power company
Overload Decrease load to rated value
Stops Bearing damaged by overheating Replace the bearings