Fuji Electric ALPHA5 Smart - Page 229

CHAPTER 4 PARAMETER
Automatic Operation Setting Parameter 4-61
4
The motion proceeds in the following procedure.
(1) The motion starts at the rising edge (OFF → ON) of homing [ORG] in the starting direction for
homing (PA2_08) at the homing speed (PA2_06).
(2) Upon detection of the home position LS (PA2_12, PA2_13), the motion reverses in the
direction opposite to the homing direction after reference signal detection (PA2_10) to the
point ahead of the home position LS (PA2_12).
(3) The motion changes in the homing direction after reference signal detection (PA2_10) to
detect the home position LS (PA2_12, PA2_13), and it changes to the creep speed for homing
(PA2_07) by the home position shift unit amount (PA2_14), followed by stoppage. The
stopping point changes to the home position and homing completion is turned on and the
homing process is finished.
 At the rotation direction selection point with zero speed, zero speed and in-position [INP] are
momentarily turned on. The signal change may fail to be sensed according to some scanning
periods of the host controller.
(1)
(2)-1
(3)
(2)-2
+OT
-OT
Home position shift unit amount
Home
position LS
Home
position
Starting direction for homing
Homing direction after
reference signal detection
OFF ON OFF
OFF ON
OFF ON
OFF ON
OFF ON OFF
OFF ON
OFF ON ON
OFF ON ON
OFF
(1)
(2)
(3)
+
-
ON ONOFF OFF
ON
ON ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
Time
Speed
Homing creep speed [PA2_07]
Homing speed [PA2_06]
Home position shift unit
amount [PA2_14]
Controller,
sensor
↓
Servo
amplifier
Servo-on [S-ON]
Position control
Homing [ORG]
Home position LS [LS]
Ready for servo-on
Homing LS detection
Homing completion
Zero speed
In-position
[
INP
]
Servo
amplifier
↓
Controller