Beckhoff EL1904 User Manual

Operation
EL190444 Version: 3.0.0
PrmName Meaning Values
Sensor test
channel 3 active
The clock signal for connection Input3+
is checked at connection Input3-.
true/ false
Sensor test
channel 4 active
The clock signal for connection Input4+
is checked at connection Input4-.
true/ false
Logic channel 1
and 2
Logic of channels 1 and 2 • single logic
• asynchronous repetition OSSD (sensor
test must be switched off)
• any pulse repetition OSSD (sensor test
must be switched off)
• short cut is no module fault
Logic channel 3
and 4
Logic of channels 3 and 4 • single logic
• asynchronous repetition OSSD (sensor
test must be switched off)
• any pulse repetition OSSD (sensor test
must be switched off)
• short cut is no module fault
Store Code This parameter is required for the
TwinSAFE Restore Mode
0x0000
Project CRC This parameter is required for the
TwinSAFE Restore Mode
0x0000
5.4.5.1 EL1904 configuration for light barriers, light grids, light curtains etc.
The EL1904 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.
CAUTION
Sensors with self-testing outputs!
Only sensors with self-testing outputs and a maximum sensor self-test duration of 350µs may be
connected to the EL1904 (see illustration below).
Fig.25: Maximum permissible sensor self-test duration of 350 µs
Parameter
To connect these sensors please set the following parameters for the EL1904 in the TwinCAT System
Manager:

Beckhoff EL1904 Specifications

General

Brand	Beckhoff
Model	EL1904
Category	Touch terminals
Language	English