
B-65270EN/05 4.SERVO FUNCTION DETAILS
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4.14 LINEAR MOTOR PARAMETER SETTING
4.14.1 Procedure for Setting the Initial Parameters of Linear Motors
(1) Overview
The following describes the procedure for setting the digital servo
parameters to enable the use of a FANUC linear motor.
(2) Series and editions of applicable servo software
(Series 30i,31i,32i)
Series 90D0/A(01) and subsequent editions
Series 90E0/A(01) and subsequent editions
(Series 15i-B,16i-B,18i-B,21i-B,0i-B,Power Mate i)
Series 9096/A(01) and subsequent editions
Series 90B0/A(01) and subsequent editions
Series 90B1/A(01) and subsequent editions
Series 90B6/A(01) and subsequent editions
(Series 0i-C, 20i-B)
Series 90B5/A(01) and subsequent editions
(3) Linear encoders
The position and velocity of the linear motor are detected using a
linear encoder. Two types of linear encoders are available:
incremental type and absolute type. The parameter setting and
connection vary according to the type of encoder.
Incremental type
The linear encoder of incremental type is connected to a servo
amplifier via a position detection circuit (A860-0333-T001, -T002,
-T201,-T202, -T301, -T302) manufactured by FANUC. Values to be
set in parameters vary depending on the signal pitch of the linear
encoder. Therefore, check the signal pitch of the encoder first.
If a position detection circuit (-T201, -T202, -T301, or -T302) having
an interpolation magnification of 2048 is used, it is necessary to
specify additional parameters so that both the maintenance of a
maximum feedrate and the realization of a higher resolution can be
supported.
Table 4.14.1 (a) lists examples of usable incremental linear encoders.
Table 4.14.1 (a) Examples of usable linear encoders (incremental)
Encoder maker Signal pitch (µm) Model
20 LS486, LS186, etc.
40 LB382, LIDA185, etc.
2 LIP481
4 LF481R, LIF181, etc.
HEIDENHAIN
100 LB382
MITUTOYO 20 AT402
Optodyne 40.513167 LDS
20 RGH22
Renishaw
40 RGH41