4.3.7 MANUAL ZERO RETURN OPERATION FAULTY
This chapter assumes that manual feed (JOG ) and manual
rapid traverse rate (RAPID) operate normally.
Table 4.36
Manual Zero Return Operation Faulty
Cause of Trouble
Mode not set to zero
return
Rapid or jog mode not
selected
Deceleration limit
switcl
not input
Parameter not set
correctly
A dog position for the
deceleration limit
switcl
is arranged adequately.
..
-,.
Others:
● Coupling loose
● Dog loose
● Noise
Check Method
/0 signal #3007 Do must be 1. (In i80L
nulti-program system, #3057 D
o for second
lrogram and #3067 Do for third program. )
characteristically, the signal runs to
OT at
he existing speed even when it has passed
loint
A in the
fi~re
shown below.
n parallel with 1/0 signal #3007
Do
=
1, #3000
)0 or
D,
must be 1. In i80L multi-program
ystem, check
#3050
for second program and
“3060 for third program. Unless this condition
s satisfied, the operation cannot start.
sPEEo RAPID FEED
Wz?
#3o73 1!
Bcl
1
!
o
DECEL LS
SIGNAL
--- ZERO POINT PULSE
!eturn
to Reference Point Control 1/0 Signal:
3onfirm that 1/0 signals #3073 DO to
D7
:hange as above, transmitting 1/0 signals at
~
low speed such as jog, etc.
leferring
to the above figure, verify the
-elative parameter with the attached
param -
;ter sheet.
occasionally dislocation may occur by one
-otation of the motor.
This is a case in which the position is slipped
at random.
Shielded cable used for PG signal?
Solution
Select
the manual return-
~o-reference point mode or
the relative switch.
Check the wiring.
use a sequence change, etc.
to enable the manual
return-to-reference point
signal
and JOG or RAPID
signal
to be input
simultaneously.
Check the deceleration
limit switch to check
the wiring. If both the
deceleration limit switch
and wiring are normal,
replace the model
JANCD-
FC800
board.
If the parameter is
different from the finally
set value of the parameter
sheet, reset it.
Arrange the dog position
to make the rising point
(point C in the above
figure ) of the deceleration
limit switch signal come to
the center of points
B through D of origin
pulses [In i80M, 1/0
monitor #3610 (D
6 )
to
#3614
(D
b). In i80L,
1/0
monitor #3620 (D
2
) to
#3627
(D2 ).] of each axis,
sending the signal in
handle mode.
If loose, tighten. Check
the shield processing and
contact your YASKAWA
representative.
a
A
119
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