12. WHEN USING WITH A GENERAL-PURPOSE INTERFACE
12 - 35
12.4.9 Dog type rear end reference home position return
POINT
This homing type depends on the timing of reading DOG (Proximity dog) that
has detected the rear end of a proximity dog. Therefore, when a homing is
performed at a creep speed of 100 r/min, an error of 200 pulses (for HG series
servo motor) is generated in the home position. The higher the creep speed, the
greater the error of the home position.
Deceleration starts at the front end of the proximity dog. After the rear end is passed, the position is shifted
by the travel distance after proximity dog and the home position shift distance. The position after the shifts is
set as the home position. Homing can be performed independently of the Z-phase signal. Changing the
creep speed may change the home position.
(1) Device/parameter
Set input devices and parameters as follows:
Item
Device/parameter to be used
Setting
Homing mode selection
MD0 (Operation mode selection 1)
Switch on MD0.
DI0 (Point table No. selection 1) to DI7 (Point
table No. selection 8)
Switch off DI0 to DI7.
Home position return
direction
[Pr. PT45 Home position return types]
Select the homing direction with [Pr. PT45]. The
setting is shown as follows:
Address increasing direction: -6
Address decreasing direction: -38
Dog input polarity
[Pr. PT29 Function selection T-3]
Refer to section 12.4.1 (2) (b) to select the dog input
polarity.
Home position return speed
[Pr. PT05 Home position return speed]
Set the rotation speed until a dog is detected.
Creep speed
[Pr. PT06 Creep speed]
Set the rotation speed after a dog is detected.
Home position shift distance
[Pr. PT07 Home position shift distance], [Pr.
PT57 Home position shift distance (extension
parameter)]
Set this when shifting the home position from where
the rear end of the proximity dog is passed.
Travel distance after proximity
dog
[Pr. PT09 Travel distance after proximity dog],
[Pr. PT59 Travel distance after proximity dog
(extension parameter)]
Set the travel distance after the rear end of the
proximity dog is passed.
Acceleration time constant/
deceleration time constant of
homing
[Pr. PT61 Home position return acceleration
time constant] or [Pr. PT62 Home position
return deceleration time constant]
The acceleration/deceleration time constant of [Pr.
PT61] or [Pr. PT62] is used.
Set [Pr. PT60 Function selection T-8] to select the
parameters to be used.
Homing position data
[Pr. PT08 Home position return position data],
[Pr. PT58 Home position return position data
(extension parameter)]
Set the current position at the time of homing
completion.
Содержание MR-JE-C
Страница 33: ...2 SIGNALS AND WIRING 2 16 MEMO ...
Страница 37: ...3 STARTUP 3 4 MEMO ...
Страница 129: ...6 HOMING MODE 6 36 MEMO ...
Страница 169: ...7 HOW TO USE THE POINT TABLE 7 40 MEMO ...
Страница 203: ...9 HOW TO USE JOG MODE 9 12 MEMO ...
Страница 215: ...11 APPLICATION OF FUNCTIONS 11 8 MEMO ...
Страница 307: ...12 WHEN USING WITH A GENERAL PURPOSE INTERFACE 12 92 MEMO ...
Страница 309: ...MEMO ...