Datasheet

Leuze electronic GmbH + Co. KG In der Braike 1 D-73277 Owen Tel. [phone] PRK 55/6(D).42… - 05
[e-mail] • www.leuze.com
Locking the teach button via the teach input
A static high signal ( 4ms) at the teach
input locks the teach button on the device if
required, such that no manual operation is
possible (e.g., protection from erroneous
operation or manipulation).
If the teach input is not connected or if there
is a static low signal, the button is unlocked
and can be operated freely.
Sensor adjustment (teach) via teach input
The following description applies to PNP switching logic!
U
Teach low
 2V
U
Teach high
 (U
B
-2V)
Prior to teaching: Clear the light path to the reflector!
The device setting is stored in a fail-safe way. A reconfiguration following voltage interruption or switch-off is thus
not required.
Teach for 11% sensor sensitivity
(highly transparent bottles and foils with thickness > 20μm)
After the teaching, the sensor switches when about 11% of the light beam are covered by the object.
U
Teach low
t
Te ach 1
4 ... 1000 ms
t
U
Teach high
U
Teach low
4 ms
t
U
Teach high
4 ms
4 ms
Quick teach for 11% sensor sensitivity
(highly transparent bottles and foils with thickness > 20μm)
After the delay before start-up ( 300ms) has elapsed, the teach button on the device can be operated. The teach button is disabled af- ter the 1st edge. Standard teach: t
Teach1
= 4 … 1000ms
After about 4ms, the current teach value is applied, teach process completed. The button remains disabled until the next signal change. Teach button may now be oper- ated again.
Shortest teaching duration for
this teaching: approx. 12ms
PRK 55 Retro-reflective photoelectric sensor with polarization filter for bottles