
4. SERVO FUNCTION DETAILS B-65150E/04
− 128 −
(6) Improvement in zero-width setting
(a) Series and editions of applicable servo software
Series 9080/K(11) and subsequent editions (Series 15-B, 16-C,
18-C)
Series 9090/C(03) and subsequent editions (Series 16i, 18i, 21i,
Power Mate i)
Series 90A0/A(01) and subsequent editions (Series 15i, 16i, 18i,
21i, Power Mate i)
(b) Setting parameters
To use the improvement, set the following parameter:
#7 #6 #5 #4 #3 #2 #1 #0
1742
−
DUAL0W
2202
−
DUAL0W (#4) The zero-width determination is performed with:
0: Setting = 0 only.
1: Setting. ← Set this value.
(7) Cautions on setting of the dual position feedback conversion coefficient
CAUTION
The dual position feedback conversion coefficient is
set as explained in Art. (4). With the conventional
calculation method, however, cancellation may occur
in the conversion coefficient of the servo software
depending on constants such as the machine
deceleration ratio. If cancellation in the conversion
coefficient occurs, feedback errors in the semi-closed
loop system are accumulated. In some cases, this
may result in motor oscillation.
To prevent this problem, calculate and set the dual
position feedback conversion coefficient by following
the procedure given below.