SMC Networks LEY, Operation Manual

Page: 54 / 56

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No. Phenomenon Cause Countermeasure
3
"Output signal" unstable the
"INP output signal" turns "ON"
before pushing the work piece.
1) "INP output signal" turns "ON"
because the actual pushing
force exceeds "TriggerLV".
Set the "Pushing force" and the
"TriggerLV" within the specified
range for the "Pushing speed"
/See 7.2
Caution
(1) on p.41
"Output signal" is unstable when
pushing the work piece.
1. INP output signal
When pushing work piece: “ON”
↓
Momentary “OFF”
↓
“ON”
2. BUSY output signal
When pushing work piece: “OFF”
↓
Momentary “ON”
↓
“OFF”
1) Situation of pushing the
work-piece is unstable.
Pushing the work piece in a
position that allows the
attachment to catch on the
work piece.
↓
Work piece slipped.
↓
Re-holding the work piece.
Change the shape of the attachment to
avoid being caught by the work-piece
and to avoid slipping work-piece.
Ex1) Attachment made by an
elastic material.
Ex2) Change the point of a rod
where force is applied to
the same axle.
<If it is not possible to change
the shape of attachment>
The unstable pushing condition
cannot be improved.
<How to reduce the instability of
the "Output signal">
1. To reduce the influence when
pushing the work piece.
“Pushing force” = “TriggerLV”
2. Set the pushing force to be
larger within the specified
range.
An unstable output signal may occur easily
because of an external shock or vibration
when the pushing force is set too low.
“INP” output signal is unstable.
“
INP” output signal is unstable
even after the positioning
operation is completed.
1) The value of [In position] in step
data is too small
Increase [In position] value as the
following.
( [0.5] or more )
“INP” output signal is [OFF].
“
INP” output signal is [OFF] even
after the pushing operation is
completed.
The value of "In pos" is input
forward of work.
Input the value of "In pos" larger
than length to work.
/See Example of step data entry(4)
on p.28
4
Positioning repeatability is out of
specified range.
1) It shifts to the next operation by
receiving the "INP" output
signal.
Go to the next operation after
receiving the “BUSY” output
signal is outputted.
2) The belt is loosened. Readjust belt tension to the
appropriatede value.
5
Damage 1) Abnormal external force Interference of mechanism,
eccentric load or excess load
leads to cause deformation or
damage of the actuator. Eliminate
these factors.
6
The rod of the actuator with vertical
mounting vibrates repeated up and
down.
1) Actuator carries excess load. Check if the workload is within
the specification range.
/See 2.1 Specifications on p.9
/See 3.1 Specifications on p.13