Linear Motor Parameter Setting; Total Weight (Mover + Load); E-Gear Ratio; Limit Setting - Delta ASDA-A3 Series User Manual

ASDA-A3

11.7 Linear motor parameter setting

Some parameter settings are different for linear motors and rotary motors. The following
sections describe the definitions and precautions for linear motor parameter settings. Before
setting the parameters, refer to Chapter 8 Parameters for more information. Some parameter
setting values and units for the linear motor are different from those for the rotary motor, which
are further explained in the following sections.

11.7.1 Total weight (mover + load)

The total weight estimation methods for the linear motor and the rotary motor are similar, but the
setting value for the total weight of the linear motor (P1.037) is in units of kg. During the
estimation, it is advisable to set the speed (P4.005) to 10000 (unit: 0.01 mm/s) or above and set
the time (P5.020) to 1.5 seconds or less for the linear motor to accelerate from 0 to 5 m/s or to
decelerate from 5 m/s to 0.

11.7.2 E-Gear ratio

It is recommended that you set the E-Gear ratio for the linear motor to
If the E-Gear ratio is 1, when the command issues 1 PUU, the linear scale feedback is 1 pulse;
if the E-Gear ratio is 2, when the command issues 1 PUU, the linear scale feedback is 2 pulses.
Incorrect E-Gear ratio setting may result in an error between the command and the actual
movement distance.

11.7.3 Limit setting

The limit setting function is to protect the motor from exceeding the allowable range. Connect
the physical signal switch to the DI for protecting the machine and avoiding collision.
As shown in the following figure, the X and Y of the DI are user-defined. The DIX in this figure is
defined as the positive limit (PL) and the DIY is defined as the negative limit (NL), which are
defined as Positive inhibit limit (0x23) and Negative inhibit limit (0x22) by the digital inputs of
Delta servo drives. When the forward or reverse direction changes, change the positive and
negative limit settings as well; otherwise the protection is lost.
Linear motor
NL
Limit switch
Linear Motor and Third-Party Motor
P1.044
P1.045
Positive direction
PL
Limit switch
CN1
DIX
DIY
1
.
=
1
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