Manual Zero Return Operation Faulty - YASKAWA YASNAC i80 Maintenance Manual

4.3.7 MANUAL ZERO RETURN OPERATION FAULTY

This chapter assumes that manual feed (JOG ) and manual
rapid traverse rate (RAPID) operate normally.
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
Manual Zero Return Operation Faulty
Table 4.36
Check Method
/0 signal #3007 Do must be 1. (In i80L
nulti-program system, #3057 D
characteristically, the signal runs to
he existing speed even when it has passed
n parallel with 1/0 signal #3007 Do = 1, #3000
or D, must be 1. In i80L multi-program
)0
ystem, check #3050 for second program and
"3060 for third program. Unless this condition
s satisfied, the operation cannot start.
#3o73
-elative parameter with the attached param -
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?
for second
o
the relative switch.
OT at
Check the wiring.
to enable the manual
return-to-reference point
simultaneously.
Check the deceleration
limit switch to check
the wiring. If both the
deceleration limit switch
and wiring are normal,
replace the model JANCD-
1
DECEL LS
o
SIGNAL
--- ZERO POINT PULSE
D to
O
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
#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.
Solution
sequence change, etc.
a
to
6 )
a
A
119