Rockwell Automation Publication 45DMS-IN001A-EN-P - August 2018
3
PHOTOSWITCH Distance Measurement Sensor
Dynamic Teach (Run Process) - Background Suppression
Focus the sensor on the running process, press and hold the button for
three seconds until the yellow light-emitting diode (LED) starts
flashing. The sensitivity is automatically taught in the next 30 seconds
provided the sensor sees two cycles of “target” and “no target.” The
switching threshold for output ON vs. OFF is set in between the two
conditions.
Figure 3 - Dynamic Teach-in
Teach Procedures for 45DMS-B8LGT1-D5
The sensor discrete and analog outputs can be programmed with the use
of two dedicated push buttons on the 45DMS-B8LGT1-D5. These
buttons are:
• Q – Configures the discrete output operation window of the
sensor
• Q
A
– Configures the analog output to operate in either positive
or negative slope
Window Mode with a Positive Slope
To teach the desired operating window with a positive slope, the
operator must follow a two-step process: teach the near distance to the
face of the sensor (first condition) and teach far distance from the face
of the sensor (second condition).
Teach Discrete Output (Q)
1. Teach near distance (first condition): Place the target at the
desired near distance. Press and hold the Q button for three
seconds until the orange and green indicator start blinking
intermittently. Release the button. The first condition has been
taught.
2. Teach far distance (second condition): Place the target at the
desired far distance. Press and release the button. The teach
process is complete.
Teach Analog Output (Q
A
)
1. Teach near distance (first condition): Place the target at the
desired near distance. Press and hold the Q
A
button for three
seconds until the orange and green indicator start blinking
intermittently. Release the button. The first condition has been
taught.
2. Teach far distance (second condition): Place the target at the
desired far distance. Press and release the button. The teach
process is complete.
If the push button is not pressed within 30 seconds, the sensor exits
teach mode and returns to run mode without learning the new setting.
Figure 4 - Discrete Output Teach for Window Mode and Positive Slope
The sensor can also operate as a background suppression sensor when
the configurator is via IO-Link.
Discrete Output Teach in Window Mode with a Negative
Slope
To teach the desired operating window with a negative slope, the
operator must follow a two-step process: teach the far distance to the
face of the sensor (first condition) and teach the near distance from the
face of the sensor (second condition).
IMPORTANT
The minimum distance between first target and second
target must be at least 80 mm (3.15 in.) of separation.
Q
Q
Low
Low
High
High
1/2
1/2
3
5 6 7
IMPORTANT
The minimum distance between first target and second
target must be at least 80 mm (3.15 in.) of separation.
Teach 1
Teach 2
Teach 1
Teach 2
min. 80 mm
Q
High
Low
Q
High
Low
Q A
3.6 mA / 0.06 V
4 mA / 0.09 V
20 mA / 10 V
21.1 mA / 11 V