
B-65270EN/05 4.SERVO FUNCTION DETAILS
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Measuring the activating phase
(1) Connect SERVO GUIDE to the CNC, and set channel data as
shown below.
Select the target axis for measurement, and set the data type to
"ROTOR".
* For a linear motor, a value from 0 to 360 degrees is read
each time a motion is made over the distance of a pair of the
N pole and S pole of the magnet (pole-to-pole span).
(2) Run the linear motor using a JOG operation for example, and
observe the behavior of the activating phase (AMR) before, at
the moment, and after phase Z is captured. (See Figs. 4.14.1 (a)
and (b).)
The activating phase changes to 0 (or 360) degrees at the moment
phase Z is captured. Measure the value just before it changes,
and let this value be A.
360°
360°
Fig. 4.14.1 (a) If the offset is set with a positive numbe
(before AMR offset adjustment)
Fig. 4.14.1 (b) If the offset is set with a negative numbe
(before AMR offset adjustment)
45° (0.3 V) or lower
(*)
315° (2.2 V) or higher
(*)
Phase Z
Phase Z
(*) The figures above show examples where AMR60 = 0. When
AMR60 = 1, "45° (0.3 V) or lower" should read "60° (0.4 V) or
lower", and "315° (2.2 V) or higher" should read "60° (2.1 V) or
higher".