Beckhoff ELX3202-0090 | EtherCAT Terminal, 2-channel analog input, temperature

The ELX318x analog input terminal allows the direct connection of

intrinsically safe HART-capable field devices located in hazardous

areas classified zone 0/20 or 1/21. It supplies measuring transducers

located in the field and transmits their analog measuring signals

electrically isolated to the automation device.

Overload and open-circuit detection are signaled by the error LEDs,

furthermore LEDs inform about the status of the HART communication

and signal any communication errors. The EtherCAT Terminal indicates

the signal state by means of light emitting diodes.

The HART protocol (Highway Addressable Remote Transducer) enables

two-way communication through digital data transfer via the analog

4…20 mA wiring. In this way, in addition to the analog current signal,

further data can be exchanged with the field device via the

superimposed digital signal.

The HART communication can also be used for the FDT/DTM concept.

The TwinCAT FDT container enables the integration of field device

DTMs into TwinCAT Engineering, so that the device configuration and

diagnostic functions are available directly within the development

environment. As the FDT concept only supports 32-bit, it cannot be

used in the 64-bit TwinCAT XAE Shell.

The ELX3152-0090 analog input terminal allows the direct connection of

intrinsically safe field devices located in hazardous areas classified zone

0/20 or 1/21. It supplies measuring transducers located in the field and

transmits their analog measuring signals electrically isolated to the

automation device. The measuring range can be switched between 0...20

mA and 4...20 mA by software.

With a technical measuring range of ±107% of the nominal range, the

terminal also supports commissioning with sensor values in the limit range

and evaluation according to NAMUR NE43. The error LEDs indicate an

overload condition and wire breakage. The error LEDs indicate an overload

condition and wire breakage.

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 ELM360x EtherCAT Terminals are designed for the evaluation of IEPE

sensors (Integrated Electronics Piezo-Electric), which are mainly used for

vibration diagnostics and acoustics. The constant current feed can be set

to 0/2/4 mA. The input characteristics are also flexibly adjustable from

DC to 10 Hz in the CoE. The ELM360x basically measures voltages AC/DC

and in addition, the internal scaler function can be used if, for example,

an output in acceleration [m/s²] is desired. In voltage measurement mode

12 different measurement ranges from ±20 mV to ±10 V and 0 to 20 V

are adjustable.

Irrespective of the signal configuration, all ELM modules have the same

technological properties. The ELM360x modules for IEPE evaluation offer

a maximum sampling rate of 20.000 or 50.000 samples per second. IEPE

sensors are often connected via coaxial cables, therefore the ELM360x-0002

feature a BNC connector. The 2-pin version with push-in (ELM360x-0000)

on the other hand is ideal for industrial use where a plug is unplugged

less frequently for maintenance purposes and fast wiring is much more

important.