Fanuc Power Mate i-D/H Maintenance Manual

B63175EN/03
7. TROUBLESHOOTING
433
(START)
Check whether position gain is greater than 128 pulses
(DGN 300) before or during reference position return.
128 or
more
Position error
amount : 300
Check feed rate command:
Parameter 1420 F : Rapid traverse rate (mm/min)
Parameter 1424 Manual rapid traverse rate (mm/min)
Parameter 1825 G : Servo loop gain (0.01sec1)
F 5000/3
Position error=
G detection unit [µm/PLUSE]
Detection unit : Move amount to a command pulse (usually 1µm)
In metric machine, if the no. of digits below decimal point is 4 on the
position display screen, detection unit is 0.1 µm.
Check rapid traverse override signals :
ROV1 DGN G14.0
ROV2 DGN G14.1
Parameter 1421 Fo rate
Check reference position return deceleration signal
DEC1 to DEC8
See Subsec. 7.1.2.
When reference position return is started from deceleration signal 0, feed rate
becomes FL rate.
Parameter 1425 FL rate
ROV1 ROV2
00
10
01
11
YES
NO
(1) Next page
Override
100%
50%
25%
Fo rate
Raise the speed
YES
NO
YES
NO
α absolute pulse?
Was the
motor rotated through
at least one turn, and was the
power turned off then
on again?
Ensure that, after the occur-
rence of a battery alarm (306),
the battery was restored to its
normal state, the motor was
rotated through at least one
turn, and that the power was
turned off then on again.
Rotate the motor through at
least one turn, then turn the
power off then on again.
Countermeasures

Leave a Reply

Your email address will not be published. Required fields are marked *