Yaskawa i80M Maintenance Manual - Manual (Page 98)

4 . 2
4.2.6
TROUBLESHOOTING BY ALARM CODES (Cent’d)
ALARMS 2071 TO 2078,2081 TO 2088
(REFERENCE POINT RETURN AREA ERROR)
Table 4.8
Cause of Trouble
This type of alarm results
when reference point
return performed
manually.
It also occurs by reference
point return at low speed
due to DECLS chattering.
Occurs at high speed by
error or reference point
pulse.
The alarm occurs at
automatic reference point
return.
Check Method
Observe DECLS chattering:
[/0 Signal
#3073 D O
#3073 (2nd-axis)
#3073 (3rd-axis)
#3073 (4th-axis)
#3o73 (5th-axis)
#3073 (6th-axis)
#3073 (7th-axis)
#3073 (8th-axis)
Observe reference point pulse:
[/0 Signal
In case of i80M #3610
#3611 (2nd-axis)
#3612 (3rd-axis)
#3613 (4th-axis)
#3614 (5th-axis)
In case of i80L #3620
#3621 (2nd-axis)
#3622 (3rd-axis)
#3623 (4th-axis)
to to
#3627 D2 (8th-axis)
In case of G28 : Same as above
In case of G27 : Programmed position
differs from reference
point.
Solution
Adjustment of replacement
LS
●
Failure of module
Replace AC servo drive.
Replace FC300B board.
Replace AC motor.
Replace PG cable.
Same as above
Check the program.
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