Push button lock and unlock, Remote teach – Rockwell Automation 45LUM-D7JPT1-D5 Luminescence Sensor User Manual

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Rockwell Automation 45LUM-IN001A-EN-P — May 2014

45LUM Luminescence Sensor 3

Maximum Range/Sensitivity

It is possible to configure the sensor for maximum sensitivity by
following these steps:

1. Position the sensor so that there is not target in range (nothing

closer than 50 mm).

2. Push SET for three seconds. The green and yellow LEDs will turn

OFF.

3. Push SET for one second. The green LED will turn ON.

The teach setup is completed.

Push Button Lock and Unlock

Sensors with teach or manual adjustment are flexible and can be used
in many applications. However, some engineers do not like the idea of
an operator or maintenance person making changes to the settings of
a sensor after the initial setup. These engineers often ask for fixed
range sensors. Another potential solution is to prevent adjustment by
locking the teach button.

The push button on the 45LUM can be locked. A permanent lock can
be achieved by attaching the grey wire (pin 5) to V-. If the grey wire is
connected to V-, the push button is completely ignored by the sensor
and no changes can be made. By taking advantage of this feature, the
engineer originally applying the sensor can greatly reduce the
likelihood of the settings of the sensor later being changed.

Remote Teach

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
target and connect to the +V for less than one second to teach the “no
target” condition. All push button functions can also be carried out via
RT.

1. Connect the white wire to V+ for more than three seconds (voltage

is greater than 12…28V).

2. Teach the sensor by placing the target in front of the sensor. The

sensing distance for 45LUM is 5…50 mm (0.2…2 in.).

3. Disconnect the white wire from V+.

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