IAI America ERC3 - Manual (Page 328)

Chapter 6
Adjustment of Operation
6.3 I/O Parameter
6.3.1 Positioner Mode 1, Positioner Mode 2 and Pulse
Train Control Mode
318
(20) Default movement direction for excitation-phase signal detection (Parameter No.28)
No. Name Symbol Unit Input Range Default factory setting
28
Default movement direction
for excitation-phase signal
detection
PHSP –
0 : Reversed
direction
1 : Forward direction
In accordance with
actuator
Excitation phase signal detection (Note 1) is executed at the first servo-on after the power is
supplied. Detection direction at this time is determined. Define the detection direction at this
time.
Even though it is generally unnecessary to change this setting, set this to the direction which
the motor is easy to move when the actuator interferes with the mechanical end or peripheral
object at the time the power is supplied.
If the direction not interfering is the same direction as the home return direction, set the same
values as set to Parameter No.5 Home Return Direction. If the direction is opposite, set the
other values from Parameter No.5. (If No.5 is 0, set 1. If No.5 is 1, set 0.)
Note 1 In Simple Absolute Type, the 2nd excitation phase signal detection is executed at the
home-return operation complete to establish the absolute home point.
(21) Excitation-phase signal detection time (Parameter No.29)

No. Name Symbol Unit Input Range Default factory setting
29
Excitation-phase signal
detection time
PHSP msec 1 to 999
In accordance with
actuator

Excitation phase signal detection (Note 1) is executed at the first servo-on after the power is
supplied. Detection direction at this time is determined. Define the detection direction at this
time.
It is not necessary to change this parameter in normal use, however, there are some cases that
adjustment of this parameter is enable for recovery when a problem such as the excitation
phase signal detection error or operation error is generated.
Contact us if it is necessary to change this parameter.
Note 1 In Simple Absolute Type, the 2nd excitation phase signal detection is executed at the
home-return operation complete to establish the absolute home point.

(22) Excitation detection type (Parameter No.30)

No. Name Symbol Unit Input Range Default factory setting
30 Excitation detection type PHSP –
0 : Conventional
method
1 : New method 1
(For vertical
mount
installation)
2 : New method 2
(For horizontal
mount
installation)
0

Excitation phase signal detection (Note 1) is executed at the first servo-on after the power is
supplied, and in the new method, we succeeded to make this operation smoother and quieter
than ever (when compared in IAI products).
There is a risk that the slider or rod may drop at the excitation phase signal detection if setting
to “2” (New Method 1) and installing the actuator in vertical mount. Establish the setting
considering the posture of the installation. When the actuator is installed vertically, and if the
slide or rod drops, set to “0” (Basic Method).
Note 1 In Simple Absolute Type, the excitation detection is executed at the home-return
operation complete.