Beckhoff ED3361 | EtherCAT Terminal, 1-channel analog input, measuring bridge

The analog EL3356-0090 input terminal enables direct connection

of a resistor bridge or load cell in a 4- or 6-wire connection technology.

The ratio between the bridge voltage UD and the supply voltage UREF

is determined simultaneously in the input circuit and the final load value

is calculated as a process value on the basis of the settings in the terminal.

With automatic self-calibration (can be deactivated) and dynamic filters

the terminal with measuring cycles of 10 ms can be used for slow weighings

with high precision.

With the aid of the TwinSAFE SC technology (TwinSAFE Single Channel) it

is possible to make use of standard signals for safety tasks in any network

or fieldbus. To do this, EtherCAT I/Os from the areas of analog input, position

measurement or communication (4…20 mA, incremental encoder, IO-Link,

etc.) are extended by the TwinSAFE SC function. The properties typical for

the signals and the standard functions of the I/O components are retained.

TwinSAFE SC I/Os differ optically from standard I/Os by a yellow stripe on

the front of the housing.

The TwinSAFE SC technology enables communication via a TwinSAFE protocol. 

These connections can be distinguished from the usual secure communication

via Safety over EtherCAT.

The data from the TwinSAFE SC components is fed via a TwinSAFE protocol to

the TwinSAFE Logic, where it can be used in the context of safety-relevant

applications. Detailed examples confirmed/calculated by the TÜV SÜD for the

correct application of the TwinSAFE SC components and the respective normative

classifications can be found in the TwinSAFE application manual.

The EL3314-0090 analog input terminal allows four thermocouples

to be connected directly. The EtherCAT Terminal circuit can operate

thermocouple sensors using the 2-wire technology.

A microprocessor handles linearization across the whole temperature

range, which is freely selectable. Compensation for the cold junction

is made through an internal temperature measurement at the terminal.

The EL3314-0090 can also be used for mV measurement.

With the aid of the TwinSAFE SC technology (TwinSAFE Single

Channel) it is possible to make use of standard signals for safety

tasks in any network or fieldbus. To do this, EtherCAT I/Os from the

areas of analog input, position measurement or communication (4…

20 mA, incremental encoder, IO-Link, etc.) are extended by the

TwinSAFE SC function. The properties typical for the signals and the

standard functions of the I/O components are retained.

TwinSAFE SC I/Os differ optically from standard I/Os by a yellow stripe

on the front of the housing.

The TwinSAFE SC technology enables communication via a TwinSAFE

protocol. These connections can be distinguished from the usual

secure communication via Safety over EtherCAT.