6 Rockwell Automation Publication 46DFA-IN001A-EN-P - January 2019
PHOTOSWITCH DIN Rail Fiber Optic Amplifier
Received Light Level Indication
Three types of indication are available for the received light level and
threshold.
Standard Indication
The direct values of received light level and threshold are displayed
without correction.
Figure 16 - Standard Indication
Percent Indication
The received light level and threshold are displayed in percent as the
maximum received light level during teaching is set to 100. The same
displayed values can be arranged when multiple through-beam type
units are in use.
This display may not be arranged at 100 as the received light intensity
varies depending on environmental factors.
Figure 17 - Percentage Indication
Figure 18 - Zero Offset Indication
Differential value is displayed in the received light level and threshold as
the minimum value of the received light level during teaching is set to
zero. The same displayed values can be arranged when multiple
reflective-type units are in use.
Figure 19 - Percent and Zero Offset Indication Examples
Crosstalk Avoidance
The sensor offers an optical unit-to-unit crosstalk avoidance feature
when multiple amplifiers are operating in close proximity. To enable this
function, the Bulletin 46DFA amplifier must be installed side-by-side
and as close as possible in the DIN rail. To be sure there’s a reliable
crosstalk avoidance, we recommend that you use the DIN rail stop
catalog number 60-BDFA-STP to firmly secure the units. This feature is
disabled when the sensor is set to operate in 50 µs mode.
Figure 20 - DIN Rail Stop Catalog Number 60-BDFA-STP
The received light level is displayed as a percentage because the maximum
received light level during teaching is set to 100.
During teaching (the received light level is displayed).
No object is
detected
An object is
detected
Each received light level after teaching
is displayed as below.
Two-point teaching
received light level
for the second point: 1000
Two-point teaching
received light level
for the rst point: 5000
In the percentage indication:
Displays as a percentage.Maximum value during
teaching is set to 100.
Zero oset indication
Dierential value (displayed as the minimum received light level during teaching) is set to zero.
Two-point teaching
received light level
for the second point: 100
Two-point teaching
received light level
for the rst point: 555
Each received light level after teaching
is displayed as below.
Displays zero for the
minimum value
during teaching.
Displays the
dierential
value from zero.
Percentage Indication
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