
10/11
Descri
tion
Design.
DateEd
01.04.20
Taka
ama
Newly designed
Notice of the update of Digital
Servo Software 90B0 series
A-62449E-084
FANUC LTD
Attached 3. About Soft Phase alarm on tandem axes
with Motor Feedback Sharing Function.
(1)
(1)(1)
(1) Overview
Overview Overview
Overview
We found that the following phenomenon may occur when we use Motor
feedback sharing function. We report the correction of the function in this
update of digital servo software.
(2)
(2)(2)
(2) Condition
ConditionCondition
Condition
-
90B0/G (07) or earlier edition servo software is used.
-
Servo HRV2, or Servo HRV3 - High speed current control is used.
-
Motor feedback sharing function is enable.
No.1960, bit7=1 (Series 15
i
), No.2018, bit7=1 (Series 16
i
, 18
i
, 21
i
)
(3)
(3)(3)
(3) Phenomenon
PhenomenonPhenomenon
Phenomenon
Soft phase alarm may occur at crossing the first Z-signal point after we connect
a pulsecoder to a servo amplifier.
NOTE
This phenomenon doesn’t occur when the machine position is corresponding to
absolule position on absolute type pulsecoder (APZ=1).
(4)
(4)(4)
(4) Countermeasure
CountermeasureCountermeasure
Countermeasure
Please change servo software to 90B0/H (08) or later.