Beckhoff ELM3704-0020 | EtherCAT Terminal, 4-channel analog input, multi-function

The EtherCAT Terminals from the ELM series were developed in order to

enable the high-quality measurement of common electrical signals in

the industrial environment. Flexibly usable measurement modules are

especially useful in laboratory and testing technology environments.

Therefore the ELM370x multi-function modules feature an input circuit

that can be set to over 30 different types of electrical connection via

EtherCAT: from voltages of ±60 V to ±20 mV, thus supporting

thermocouples and IEPE, a current of ±20 mA, a resistance measurement

of 5 kΩ and thus also temperature RTDs (Pt100. etc.), measuring bridges

and potentiometers, and all of this with a 2- to 6-wire connection,

depending on the type.

Thus, most electrical measuring tasks can be solved with just a single

module. There is a choice of different connection types: The ELM3704

-0001 with its high-quality LEMO connectors is mainly designed for

laboratory use, where sensor configurations are changed on a daily

basis, but a stable and reliable plug connection is nevertheless required.

The 6-pin version with push-in (ELM3704-0000/ELM3702-0000)

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.

The other ELM3x0x modules are price-optimized versions of the ELM370x

universal module and thus ideal for use in machines with planned and

foreseeable usage scenarios in which the measurement method of an

analog input channel does not need to be changed at runtime. In return,

they may have advanced features, like the ELM360x modules (IEPE

evaluation), which offer a switchable feed.

Extensive documentation is available from Beckhoff sales, support or

measurement@beckhoff.com.

This ELM3xxx series measurement terminal enables efficient implementation

of complex system-integrated data acquisition systems (DAQ) that place

high demands on measurement accuracy and time synchronization.