
B-65150E/04 4. SERVO FUNCTION DETAILS
− 221 −
*3-b Because the dead zone compensation parameter overflows
internally, change it as follows:
1866
−
Dead zone compensation (tilt) (PDDP)
2054
−
PDDP Dead zone compensation (tilt)
1894 (typical value for linear motor) → 1500
Parameter setting procedure (3)
Procedure (3) is intended to fine-tune an incremental scale after it is
installed and adjusted mechanically. Usually, mechanical scale
adjustment is enough for linear motors.
Parameter setting based on procedure (3) is absolutely of supplemental
nature. It should be used only for tuning purposes or if the scale cannot
be positioned correctly because of a mechanical cause.
Basically, the following parameter setting is not necessary for absolute
scales, because they do not use a magnetic pole detector (Hall sensor).
(However, it can be done if fine tuning is required because of a
mechanical cause.)
1762
−
AMR offset
2139
−
Specifies an activating phase (AMR offset) for phase Z.
[Increment system] Degrees
[Valid data range] −45 to 45
Fine-tune the activating phase according to the procedure below.
1) Connect the servo check board to the CNC.
2) Set the 7-segment LEDs at CH1 on the check board with:
Axis number specified in parameter No. 1023 at AXIS
5 at DATA
3) To measure the activating phase, set the following parameter.
1726
−
Parameter for internal data measurement
2115
−
System other than Series 90A0:
326 for an odd-numbered axis and 966 for an even-numbered axis
Series 90A0:
326 for an odd-numbered axis and 2374 for an even-numbered axis
Under this condition, the activating phase is output from CH1 on the
check board.
To use a digital check board to measure data with a personal computer,
set up "SD" (servo adjustment software) as stated below. The
displayed value is in degree units ("360 degrees" is displayed as "360").