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Feedback error
• Check signal wire if
feedback error 2 occurs.
• Check motor wire if
feedback error 4 occurs.
Check resistance between
wires (U-V, V-W, W-U).
MF7/MF15 : 6.5Ω
MF20 : 7.5Ω
MF30 : 8.3Ω
MF50 : 3.6Ω
MF75 : 3.1Ω
MF100 : 1.0Ω
Enter teaching mode in
emergency stop and check
current position display.
5
Check robot number on HPB
screen while referring to SR1
controller user's manual.
If replacement controller is
available, check by
exchanging the controllers.
5-2
Feedback error 2
Feedback error 4
Poor wiring connection or
connector is disconnected.
NO
Wiring or cable is broken.
(Electrical discontinuity)
NO
Motor resistance is abnormal.
NO
Current position display on HPB
fluctuates. *
* Current reading varies even though
slider is stopped.
NO
Robot number parameter is incorrect.
NO
Controller is defective.
NO
External noise is large.
NO
Consult us.
YES
Securely connect wires and
connectors.
YES
Replace the cable.
YES
Repair
YES
Repair
YES
Initialize parameters.
YES
Replace the controller.
YES
Take noise reduction measures.
Requires repair or parts replacement.
Contact us.
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