YASKAWA MOTIONPACK-110 Descriptive Information page 38

Table 3.1 shows the signals related to the return-to-reference point operation.
Table 3.1 Signals Related to Return-to-Reference Point"
_ stSigna I Input Signal Output Signal Return-to-
ate Mode Reference Start Completion
Motion
_ Point
JOG RAPID ZRN +JX/-JX+JY/-JY +JZ/-JZ ZPX ZPY ZPZ
X-axis Return-to- ON OFF
ON ON OFF OFF ON OFF OFF
Reference Point OFF ON
Y-axis Return-to-
ON OFF
ON OFF ON OFF OFF ON OFF
Reference Point OFF ON
Z-axis Return-to-
ON OFF
ON OFF OFF ON OFF OFF ON
Reference Point
OFF ON I
/
Select JOG or RAPID mode. I j££ _""'- ?D R
Turn on "reference point
_etur. ( ZRN/i _ I
Turn on (hold down) manual
feed button. RAPID OR JOG '_L
I
i /FEEDRATE
,,
The axis moves in the reference / _ _ APPROACH I REFERENCE"
point direction at the selected I - / ', _k FEEDRATI= ,-'t_ ^
feedrate.
J _ _ __
. --I_- PuINT
When the dog trips decal LS, I_ 7_ i _!
deceleration is made to approach _ECEL _ L1_''/ I i
! dr ,e , .SS,GNA. =D,S C , L
W DTH I I
I I I IF NAL APPROACH D STANCE
I Deceleration is made tocreep I _ , ' (_/IN RETURN-TO- REFERENCE
reeorate.wnentherlrst reference I_ REFERENCE [7 [7 [7 n nl_.pt_ POINT
point pulse is oeTecTeo after the aog I POINT PULSE --J I-I El I_J l,.J-Ig;_ I, i
disengages from deceleration LS. I ___ ,r ...... _i REFERENCE POINT AREA
When the shde _oves by the
_ T 4/__)
specified distanceafterreference _
__ISAND B!
point pulse is detected, it stops at I REFERENr'_ .............. _ i_"- : .---"_ ! _ t
the machine reference point. I POINT _
POSITION _ AREA A AREA B
Reference point return completion signal //
(ZPX, ZPY. or ZPZ) is output.
Fig. 3.3 Return-to-Reference Point Motion
When the JOG signal is turned on, the machine slide returns to the reference point
as follows:
(_) The slide starts to move towards the reference point at the feedrate for the selected mode
(JOG or RAPID). The motion direction is the one set by the parameter (#1403, #1603,
#1803).
(_) When the dog trips the deceleration LS, the speed is reduced to the approach feedrate,
which has been set by the parameter (#1504, #1704, #1904) in advance.
(_) When the dog movesaway from the deceleration LS, and the first reference point pulse
is detected, the slide further decelerates to the creep feedrate, which has been preset by
a parameter (#1505, #1705, #1905). 25