
B-65150E/04 4. SERVO FUNCTION DETAILS
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4.8 HIGH-SPEED POSITIONING FUNCTION
High-speed positioning is used in the following cases:
<1> To perform point-to-point movement quickly, where the
composite track of two or more simultaneous axes can be ignored
such as, for example, in a punch press
<2> To speed up positioning in rapid traverse while errors in the shape
during cutting must be minimized (reduction of cycle time)
In case <1>, the position gain switch function and the low-speed
integration function are effective (⇒ See Subsec. 3.4.4, "High-Speed
Positioning Adjustment Procedure"). In case <2>, the fine
acceleration/deceleration (FAD) function is effective. This section
explains these functions.
4.8.1 Position Gain Switch Function
(1) General
An increase in the position gain is an effective means of reducing the
positioning time when the machine is about to stop.
An excessively high position gain decreases the tracking ability of the
velocity loop, making the position loop unstable. This results in
hunting or overshoot. A position gain adjusted in high-speed response
mode produces a margin in the position gain when the machine is about
to stop.
Increase the position gain in low-speed mode so that both the
characteristics in high-speed response mode and a short positioning
time are achieved.
(2) Series and edition of applicable servo software
Series 9046/A(01) and subsequent editions (Series 0-C, 15-A)
Series 9060/C(03) 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/A(01) 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)