Appendix-62
2.3 Troubles and measures
No. Issue
1
Operation panel does not display anything.
Cause
・ CPU has not started up properly.
・ There is no power supply.
・ An instantaneous power cut exceeding the specification level may have occurred.
Measures
・ Check that the primary side’s power supply voltage is being supplied properly.
If that the same issue occurs when turning on the power supply, please contact the manufacturer.
・ If that C1850 error has occurred in the error history, it is possibly due to an instantaneous power cut..
2
When turning on the power supply of the controller, although the FAN of the controller is operating, the operation panel does not light
up and the operation of the robot cannot be done, or although the T/B has got the electricity, the operation of T/B cannot be done.
Cause ・ AC line inside the controller may have detected the abnormalities.
Measures ・ If the same issue occur when turning on the power supply again, please contact to the dealer.
3
An unusual noise can be heard (from the robot arm).
Cause
・Unusual noises can be caused by friction between movable parts, deformed parts, foreign matters getting inside, and
defects in belt tension.
An unusual noise is also made from the fan and the cover bolts became loosened.
Measures
・Identify the particular point from where the unusual noise is being made, and where necessary treat the problem by
replacing parts, etc.
・ When operating at slow speeds, a rattling sound can be heard from the brakes, but this is not unusual. However, if
the noise gets louder as the speed gets higher, contact the manufacturer.
4
An unusual noise can be heard (from RC)
Cause
・ A noise is made as the internally mounted fan and its casing resonate.
・ A noise is made by the fan catching internal wiring.
Measures
・ Check the state of the cover fastening.
・ Check to see whether or not the fan is interfering with cables, etc.
If no improvement is made after carrying out the above measures, please contact the manufacturer.
5
The tip of the robot is vibrating.
Cause
・ The load conditions exceed the specified values (mass, inertia)
・ The load condition settings are not suitable (HNDDAT and WRKDAT settings are not consistent with the load)
・ The tip is being used near a singular point.
・ Acceleration or deceleration is too sudden.
・ The installation stand is not rigid enough.
・ Vibrations from nearby equipment are being felt.
Measures
・Check the load conditions and the parameter settings. Please also try to adjust the acceleration/deceleration time,
the speed, and the teaching point where necessary.
・ Check the condition of the unit’s installation (including external vibrations).
If no improvement is made after carrying out the above measures, please contact the manufacturer.
6
The servo-on cannot be performed
Cause
・ A servo OFF signal (SRVOFF) is being input from an external source.
・ The operating right is not given. (IOENA parameters settings/exclusive input and output).
・ An error is occurring.
・ TB operation error (enabling switch, activate/deactivate)
Measures
・ Check for a servo OFF signal and check the operation rights.
・ Check how to operate the TB. Check that the 3 position enabling switch is set to the middle position.
・ If an error message is occurring please cancel it.
If no improvement is made after carrying out the above measures, please contact the manufacturer.
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