B ] zero signal method (ow3c = 1) – Yaskawa MP2200 Machine Controller User Manual
Page 248
5 Motion Commands
5.2.3 Zero Point Return (ZRET)
5-18
（
Note） Reverse type in
: Parameters only for the SVA-01 Module.
[ b ] ZERO Signal Method (OW3C = 1)
Travel is started at the approach speed in the direction specified in the parameters. When the rising
edge of the ZERO signal is detected, the speed is reduced to the creep speed and positioning is
performed. When positioning has been completed, a machine coordinate system is established with
the final position as the zero point.
The moving amount after the ZERO signal is detected is set in the Home Offset. If an OT signal is
detected during the zero point return operation, an OT alarm will occur.
* 1. SVB-01: SERVOPACK EXT1 signal, SVA-01: DI_2 signal
* 2. The SERVOPACK P-OT signal.
* 3. The SERVOPACK N-OT signal.
Fixed Parameter
No. 1, Bit 5
Deceleration Limit
Switch Inversion
Set whether or not to invert the polarity of the DI_5 signal, which is
used for DEC1. (OW05, bit 8, will not reverse status.)
Fixed Parameter
No. 21, Bit 0
Deceleration Limit
Switch Signal
Set the signal to use for DEC1.
OB058
Deceleration LS Signal
(DEC1) for Zero Point
Return
When bit 0 of fixed parameter No. 21 is 0, input the DEC1 signal
from the ladder program.
(cont’d)
Parameter
Name
Setting
NOT
∗3
POT
∗2
Start
Zero Point
Creep Speed
(OL
40)
Home Offset
(OL
42)
ZERO signal
∗1
Approach Speed
(OL
3E)
Parameter
Name
Setting
OW3C
Home Return Type
1: ZERO Signal Method
OB093
Home Direction
Set the zero point return direction.
OL3E
Approach Speed
Set the speed to use when starting a zero point return. Only a positive
value can be set; a negative value will result in an error.
OL40
Creep Speed
Set the speed to use after detecting the ZERO signal. Only a positive
value can be set; a negative value will result in an error.
OL42
Home Offset
Set the travel distance from the point where the ZERO signal is detected.
If the sign is positive, travel will be toward the zero point return direction;
if the sign is negative, travel will be away from the zero point return
direction.