SMC Networks LECSB2-T Series User Manual

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16. POSITIONING MODE
16.12.13 Dogless Z-phase reference home position return type
Starting from the Z-phase pulse position after the start of the home position return, the position is shifted by
the home position shift distance. The position after the shifts is used as the home position.
(1) Device/parameter
Set input devices and parameters as follows.
Item
Used device/parameter
Setting
Automatic operation mode of
the program method
MD0 (Operation mode selection 1)
Switch on MD0.
Dogless Z-phase reference
home position return
[Pr. PT04]
_ _ _ A: Select the dogless type (Z-phase
reference).
Home position return
direction
[Pr. PT04]
Refer to section 5.4.1 (2) to select the home
position return direction.
Dog input polarity
[Pr. PT29]
Refer to section 5.4.1 (2) to select the dog input
polarity.
Home position return speed
[Pr. PT05]
Set the rotation speed until a dog is detected.
Creep speed
[Pr. PT06]
Set the rotation speed after a dog is detected.
Home position shift distance
[Pr. PT07]
Set this item to move the home position set when
the Z-phase signal is given.
Home position return
acceleration time constant
[Pr. PC30]
The acceleration time constant set for [Pr. PC30]
is used.
Home position return
deceleration time constant
[Pr. PC31]
The deceleration time constant set for [Pr. PC31]
is used.
Home position return position
data
[Pr. PT08]
Set a current position at home position return
completion.
Program
DI0 (Program No. selection 1) to
DI7 (Program No. selection 8)
Select a program containing "ZRT" command that
performs a home position return.
(2) Timing chart
The following shows a timing chart after a program containing a "ZRT" command is selected.
The setting value of [Pr. PT08 Home position return position data] is used as the position address at the
home position return completion.
ON
OFF
MEND (Travel completion)
ON
OFF
CPO (Rough match)
ON
OFF
Servo motor speed
MD0 (Operation mode selection 1)
Forward rotation
0 r/min
Reverse rotation
ON
OFF
Z-phase
ZP (Home position return completion)
ON
OFF
ON
OFF
ON
OFF
ST1 (Forward rotation start)
ST2 (Reverse rotation start)
3 ms or shorter
Deceleration time constant
5 ms or longer
Acceleration time
constant
Home position return speed
Home position shift distance
Creep speed
PED (Position end)
ON
OFF
Home position return position data

SMC Networks LECSB2-T Series Specifications

General

Brand	SMC Networks
Model	LECSB2-T Series
Category	DC Drives
Language	English