Beckhoff ELX3252 | EtherCAT Terminal, 2-channel analog input, potentiometer

The ELX3204 analog input terminal allows the direct connection of RTDs

located in hazardous areas classified zone 0/20 or 1/21.

The circuitry of the ELX3204 can operate sensors with 2-wire technology.

Linearization is carried out over the entire freely selectable temperature

range. By default the terminal is set to Pt100 sensors with 2-wire

technology. The ELX3204 terminal indicates signal state and sensor

malfunctions (e.g. wire breakage) by means of LEDs.

EtherCAT terminals of the ELX series must always be operated in conjunction

with the ELX9560 power supply terminal. This terminal generates an

electrically isolated output voltage (24 V EX) from the input voltage (24 V DC)

for supplying the subsequent ELX terminals. If a new power supply is required,

the combination of an ELX9410 and an ELX9560 can be used so that further

ELX terminals can be added.

The ELX terminal segment must be terminated with one ELX9012. two ELX9410

or one EK1110. The use of two ELX9410 allows the use of EL terminals behind

ELX terminals. With the EK1110. the terminal segment can be continued via an

EtherCAT cable, for example to implement cable redundancy.

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.

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.