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Rockwell Automation Publication 45DMS-IN001A-EN-P - August 2018
PHOTOSWITCH Distance Measurement Sensor
Sensor Configuration
The Bulletin 45DMS can be configured using the push button, remote
teach, or IO-Link with the help of the status indicators on the sensor.
The following sensor features can be configured:
• Teach sensing range: standard or precision teach
• Background suppression and background reflection (a.k.a.
foreground suppression) sensing modes via IO-Link.
• Light Operate (L.O.) or Dark Operate (D.O.) output
• Auto PNP/NPN, dedicated NPN, or dedicated PNP
• Push button lock and unlock
• Change sensor output from 4…20 mA to 0…10V using IO-Link
Table 2 - Factory Default Settings
Teach Procedures for 45DMS-B8LAT1-D4
For standard teach background suppression, teach the sensitivity/
sensing range is a two-step process:
• Teach the “target” (first condition) and
• Teach the background (second condition).
The switching threshold for output ON vs. OFF is set in between the
two conditions.
1. To teach the target (first condition), place the target at the
desired distance. Press and hold the push button for three
seconds until the orange and green indicators start blinking
intermittently. Release the button. The first condition has been
taught.
2. To teach the background (second condition), remove the target.
Press and release the button. The teach process is complete. The
sensor is now configured to detect objects up to the maximum
taught distance.
If the push button is not pressed within 30 seconds, the sensor
exits the teach mode and returns to the run mode without
learning the new setting.
Figure 1 - Standard Teach Operation
The sensor can also operate as a background reflection sensor when
configurated via IO-Link.
See the 45DMS IO-Link user manual
for
more information on how to change the configuration on the sensor to
operate from background suppression to background reflection mode.
Precision Teach for Background Suppression
Teach the sensitivity/sensing range on the 45DMS sensor in a two-step
process:
1. Teach the target (first condition): Place the target at the desired
distance. Press and hold the push button for three seconds until
the orange and green indicator start blinking intermittently.
Release the button. The first condition has been taught.
2. With the target still in the sensor field of view, press and release
the push button. The teach process is complete. The sensor is
now configured to detect objects up to the maximum taught
distance with a maximum hysteresis of 60 mm (2.36 in.).
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 2 - Precision Teach Operation for Background Suppression
Description
45DMS-B8LAT1-D4 Settings
45DMS-B8LGT1-D5 Settings
Sensing range
5 m (16.4 ft) to 90% white
3 m (9.4 ft) to 6% black
Q
A
: 0.3…3 m (0.98…9.84 ft)
Q:
0.3…3 m (0.98…9.84 ft)
Sensing mode
Background suppression (single
point)
Background reflection (window)
Response time
2 ms
IMPORTANT
The minimum distance between first target and second
target must be at least 80 mm (3.15 in.) of separation.
IMPORTANT
The switching threshold for output ON vs. OFF is set with the
smallest possible hysteresis be at least 60 mm (2.36 in.) of
separation.
Q
Q
Low
Low
High
High
1/2
1/2
min. 80 mm
Q / Q
N.O.
Q / Q
N.C.
1
2
1
2
Q
Q
Low
Low
High
High
max. 60 mm
Teach 1 = Teach 2