
4. SERVO FUNCTION DETAILS B-65150E/04
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(4) Improving overshoot compensation for machines using a 0.1-µm
detection unit
(a) Overview
Conventional overshoot compensation performs imperfect
integration only when the error is 0.
A machine using a 0.1-µm detection unit, however, has a very
short period in which the error is 0, resulting in a very short time
for imperfect integration.
The new function judges whether to execute overshoot
compensation when the error is within a predetermined range.
(b) Series and editions of applicable servo software
Series 9060/Q(17) and subsequent editions (Series 15-B, 16-A,
18-A, 20, 21, Power Mate)
Series 9066/A(01) and subsequent editions (Series 20, 21, Power
Mate)
Series 9070/E(05) and subsequent editions (Series 15-B, 16-B,
18-B)
Series 9080/A(01) and subsequent editions (Series 15-B, 16-C,
18-C)
Series 9081/C(03) 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)
(c) Setting parameters
1994
−
Overshoot compensation enable level
2101
−
[Valid data range] 0 to 32767
[Increment system] Detection unit
[Standard setting] 1 (detection unit: 1 µm)
10 (detection unit: 0.1 µm)
To set an error range for which overshoot compensation is enabled, set
∆, as indicated below, as the overshoot compensation enable level.
Fig. 4.7 (h) Relationship between error and overshoot compensation
Imperfect
integration enabled
Imperfect integration disabled
Error
Error = +
∆
Error = 0
Error =
− ∆
Imperfect integration disabled