Configuration Of The Ek1914 For Light Barriers, Light Grids, Light Curtains, Etc; Fig. 25 Clock Outputs - Beckhoff EK1914 Operating Manual

8.3.1 Configuration of the EK1914 for light barriers, light grids,
light curtains, etc.
The EK1914 also supports direct connection of contact-free protective devices with two self-testing outputs
such as light barriers, light grids, light curtains, laser scanners, etc.
Sensors with self-testing outputs
Only sensors with self-testing outputs whose sensor self-test does not exceed the duration of 350 µs may
be connected to the EK1914 (see figure)!
Fig. 25: Clock outputs
Parameter
To connect these sensors please set the following parameters for the EK1914 in the TwinCAT System
Manager:
• Connect the two sensor signals to channels 1 and 2 and activate the entry asynchronous repetition
OSSD or any pulse repetition for both the inputs used under the parameter Logic for channel 1 and 2.
The difference between these settings is that with any pulse repetition simultaneous tests of the OSSD
signals up to 350 µs are allowed.
• Switch the sensor test of the EK1914 to false for both the inputs used
EK1914
Configuration of the EK1914 in TwinCAT
CAUTION
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