Panasonic Digital Fiber Sensor FX-301 - Manual (Page 65)

FX-305
Digital Fiber Sensor
Four-chemical
emitting element
Double coupling lens
APC circuit
N ew A dvanced sensor with V isible I ndicator
Digital Fiber Sensor
with 2 independent
outputs
122
SERIES
Industry first! Light-emitting amount selection function
Stable sensing over long and short periods
If the light-receiving level becomes saturated during close-range sensing or when
sensing transparent or ultra-small objects, you can adjust the light-emitting amount
of the sensor to stabilize sensing without needing to change the response time.
Sensing that previously required the response time or fibers to be changed can now
be set much more easily using this function.
In addition to a ‘four-chemical emitting element’
which suppresses changes in the light-emitting
element over time so that a stable level of light
emission can be maintained over long periods, a
new ‘Auto Power Control (APC) circuit’ has also
been adopted. Because fluctuations over short
periods of time have also been suppressed,
stable sensing is possible very quickly once the
power is turned back on after setup changes.
Industry’s largest display 9999
Independent dual outputs
Industry’s largest display with 4 digits (9999). With a greater difference in digit value
than previous models, threshold values can be set in units of 1 digit up to maximum
9999. Threshold setting can now be done more easily and accurately.
Two independent output channels are provided, so that one sensor can be used for
control tasks that previously required two sensors. In addition, the second output
channel can be used for simple self-diagnosis and alarm output, so that ease of
maintenance is improved.
(During STDF, LONG
and U-LG modes)
High-speed response that is about twice as fast as before has been achieved. Even
small objects moving at high speeds can be sensed. In addition, interference
between two units is prevented in high-speed mode (H-SP).
● Comparison of saturation remedies
[Light-receiving level saturated] [Stable sensing]
Light-emitting
amount
changed
(12000)
9999
9000
6000
3000
Upper display limit
Actual digit difference: 3000
[Conventional models]
[FX-305]
Saturated digit
difference: 999
Actual digit difference: 3000
Response time: Mode selection
Changing fiber: Change to thinner fiber to reduce light amount
Changing setting position: Increase sensing range
Variable light
amount function
Makes steps such
as those at left
unnecessary.
Industry
First Affects positioning precision
Man-hour and cost inefficiencies
Space and man-hour inefficiencies
Twice
as fast as
before
● Stable sensing comparison
Time
Light emitting amount Long-term stability
FX-305
Three-chemical
emitting
element,
No APC
Short-term stability
Deviation
● Digit difference comparison
Digit difference between and Example object A object B
FX-305
9999 Previous models
4000
Digit difference: Small Digit difference: Large
Conventional
models
[FX-305] 1 sensor is enough!
2 sensors needed
Actual position
Meandered position
ON
OUT1
OFF
Light-receiving amount
Too far left
Too far right
ON
OUT2
OFF
OK
Sensing meandering of sheets Example
] [
High-speed response 65µs
Largest number in the industry! Automatic interference
prevention of up to 16 units
Can be used even in places where fibers need to be installed close together.
08/2005