Rockwell Automation 42KD-IN001A-EN-P — October 2014
42KD Miniature Sensor 3
Standard Teach:
1. To teach the background (first condition):
2. Teach “target” (second condition):
If there’s no background surface in the field of view in Step 1, the
switching threshold will be set between the distance to the target and
the maximum sensing range. The sensor can also be taught by
teaching the target as the first condition and background as the
second condition.
Precision Teach: For a more precise setting with a smaller hysteresis,
teach the sensor to the target in step 1 and keep the target present in
step 2).
Restore to factory default setting of maximum range: Perform
steps 1 and 2 with “no target” in the sensor’s field of view and nothing
in the background.
Teach Light Operate (L.O.) or Dark Operate (D.O.)
The default setting of the output is dark operate (D.O.)
L.O. setting means that output turns ON when the target is detected. If
the application requires the output to turn OFF when the target is
detected, the setting may be changed to dark operate (D.O.).
1. To access the teach output mode setting:
Align the sensor to the background. Press and
hold button for three seconds until yellow LED
starts flashing. Release the button. The first
condition has now been taught.
In the case of multiple reflectivity targets,
choose the darkest/least reflective target
placed in its farthest position for set up.
Insert the target between the sensor and the
background. 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.
Press and hold button for six seconds until the
green LED starts flashing. Release the button. The
current setting is indicated by the yellow LED:
L.O.: Yellow LED ON
D.O.: Yellow LED OFF
t > 3 s
Background
t > 3 s
IMPORTANT
Target
Background
t < 0.5 s
t > 6 s
2. To change the sensor output mode setting:
Output Type Selection: Auto PNP/NPN, Dedicated NPN,
Dedicated PNP
The default setting is Auto PNP/NPN. The sensor monitors the load
connection and automatically configures for proper operation, i.e.
PNP or NPN. If no load is connected, the sensor defaults to PNP. The
following applications are covered with dedicated PNP or dedicated
NPN selection:
a. Parallel wiring of multiple sensor outputs: select dedicated PNP
or dedicated NPN setting, as needed.
b. If the load is connected for NPN configuration but to a power
supply other than that to the sensor or via a load enabling
contact (e.g. a relay contact in series with the load), select
dedicated NPN.
Selection can be made as follows:
1. To access output type: Press and hold the push button for nine
seconds (until both LEDs start flashing synchronously). Upon
button release, the current setting of output type is indicated by
the slow flashing of the LED(s) as follows:
• Auto PNP/NPN: both LEDs flashing
• Dedicated NPN: green LED flashing
• Dedicated PNP: yellow LED flashing
2. To change output type: Press and release the push button within
10 seconds to select desired type. Each button activation cycles to
the next output setting. The type selected is indicated by the LEDs.
The sensor retains the setting per the last button depression and
returns to the RUN mode 10 seconds after the last button is
pressed.
Push Button Lock/Unlock
The push button or remote teach (RT) can be used to prevent
unauthorized users from changing teach settings.
To lock the push button: press and release the button three times
within three seconds. Both LEDs flash synchronously for three seconds
indicating that the push button is now locked.
To unlock the push button: press and release the button three times
within three seconds. Both LEDs flash asynchronously for three
seconds indicating that the push button is now unlocked.
Permanent Lock: The push button may be permanently locked by
connecting the white wire (pin 2) to –V.
Remote Teach (RT)
The sensor can be taught remotely via the white wire (pin 2).
Connection to +V acts the same as the button being pressed and no
connection is the same as the button not being pressed. The sensor
can be taught by following the same teach/timing sequence as used
in the push button teach (e.g., connect to the +V for more than three
seconds to teach the “target,” disconnect from the +V; remove the
Press and release the button within ten seconds to
toggle from L.O. to D.O., the selection indicated by
the yellow LED.
The sensor retains the setting per the last button
depression and returns to the RUN mode ten
seconds after the last button is depressed.
t < 0.5 s