Rockwell Automation 42KD-IN001A-EN-P—October 2014
2 42KD Miniature Sensor
Dimensions [mm (in.)]
Teach Interface
Default Settings:
The factory default settings are as follows:
Sensing Range: Maximum Setting
Output Type: Auto PNP/NPN. In Auto PNP/NPN mode, the sensor
continuously monitors the load connection and automatically
configures the output to PNP or NPN.
2 m cable
Teach-in
8 (0.31)
5.5 (0.22)
Emitter
Receiver
LED 2
21.1
(0.83)
3.3
(0.13) dia.
3.3
(0.13)
18.3
(0.72)
LED 1
8 (0.31)
4.6 (0.18)
4.9
(0.19) dia.
2.6
(0.10) dia.
14.6 (0.57)
2.8
(0.11)
M8
M8 with
pico pigtail
Teach-in
LED 2
LED 1
8 (0.31)
21.1
(0.83)
4.6 (0.18)
4.9
(0.19) dia.
2.6
(0.10) dia.
3.3
(0.13) dia.
3.3
(0.13)
18.3
(0.72)
14.6 (0.57)
2.8
(0.11)
8 (0.31)
5.5 (0.22)
Emitter
Receiver
Sensor User Interface
Familiarize yourself with the LED indicators.
Mounting the Sensor
Securely mount the sensor on a firm, stable surface or support. An
application subject to excessive vibration or shifting may cause
intermittent operation. For installation convenience, Rockwell
Automation offers a wide range of mounting brackets (see Accessories
section for more detail).
Note: Due to the detection method, targets travelling horizontally to
the sensor’s optics are detected. Targets travelling vertically
may not be accurately detected. For reliable background
suppression, a minimum separation distance is recommended
between the target and the background.
42KD Miniature Sensor Configuration
Polarized Retroreflective and Adjustable Background
Suppression
The 42KD is configured using the push button or Remote Teach, and
the LED indicators on the sensor. Four features can be configured:
• Standard or precision teach for sensitivity/sensing range
• Light operate (LO) or dark operate (DO) output
• Auto PNP/NPN, dedicated NPN or dedicated PNP
• Push button lock/unlock
The sensor output is disabled during Teach.
Teach Sensitivity/Sensing Range
The default setting is the maximum sensitivity/range.
Teaching the sensitivity/sensing range is a two-step process: teach the
background (first condition) and teach “target” (second condition).
Switching threshold for output ON vs. OFF is set in between the two
conditions.
Teach button
LED indicator
LED indicator
Target