Yaskawa MP2200 Machine Controller - Manual (Page 249)

5.2 Motion Command Details
5-19
[ c ] DEC1 + ZERO Signal Method (OW††3C = 2)
Travel is started at the zero point return speed in the direction specified in the parameters. When the
rising edge of the DEC1 signal is detected, the speed is reduced to the approach speed. When the
rising edge of the ZERO signal is detected after passing the DEC1 signal, 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 DEC signal, SVA-01: DI_5 signal or OW††05, bit 8
signal
* 2. SVB-01: SERVOPACK EXT1 signal, SVA-01: DI_2 signal
* 3. The SERVOPACK P-OT signal.
* 4. The SERVOPACK N-OT signal.
DEC1 signal *1
NOT ∗4
POT ∗3
Start Zero Point
Creep Speed
(OL 40)
Home Offset
(OL 42)
ZERO signal *2
Approach speed
(OL 3E)
Zero Point Return Speed
(OL 10)
Parameter Name Setting
OW††3C Home Return Type 2: DEC1 + ZERO Signal Method
OB††093 Home Direction Set the zero point return direction.
OL††10 Speed Reference
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.
OL††18 Speed Override
This parameter allows the Zero Point Return speed to be changed without
changing the Speed Reference (OL††10). Set the speed as a percentage
of the Speed Reference Setting. This setting can be changed during
operation.
Setting range: 0 to 32767 (0% to 327.67%) Setting unit: 1 = 0.01%
Example: Setting for 50%: 5000
OL††3E Approach Speed
Set the speed to use after detecting the DEC1 signal. Only a positive
value can be set; a negative value will result in an error.
OL††40 Creep Speed
Set the speed to use after detecting the ZERO signal after passing the
DEC1 signal. Only a positive value can be set; a negative value will result
in an error.
OL††42 Home Offset
Set the travel distance from the point where the ZERO signal is detected
after passing the DEC1 signal. 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.
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. (OW††05, bit 8, will not reverse status.)
Fixed Parameter
No. 21, Bit 0
Deceleration Limit
Switch Signal
Set the signal to use for DEC1.