The ELM370x multifunction terminals have a flexible input circuit that can be set to over 30 different electrical connection types via EtherCAT: from voltage ±60 V to ±20 mV and thus also thermocouple and IEPE, current ±20 mA, resistance measurement 5 kΩ and thus also temperature RTD (Pt100 etc.), measuring bridges and potentiometers, and all of these in turn in 2- to 6-wire connection depending on the type. Thus, most electrical measurement tasks can be solved with only one terminal.
The ELM3702-0101 adds helpful functions to this series: The two channels are not only independently adjustable as in all ELM3xxx terminals, but also galvanically isolated from each other and from the EtherCAT bus. Furthermore, it can also query TEDS data in the sensor, among other things, and supports 1000 Ω quarter bridges. With the LEMO plugs, the ELM3702-0101 is primarily designed for laboratory use, where sensor configurations are changed on a daily basis and a stable and reliable plug connection is still required.
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.
Product status:
regular delivery
Product information
System data | ELM370x |
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Strain gauge | quarter bridge (1000 Ω +350 Ω + 120 Ω, ±2/4/8/32 mV/V), half bridge (±2/±16 mV/V), full bridge (±2/4/8/32 mV/V), internal bridge completion and supply adjustable 0…5 V (2-/3-/4-/5-/6-wire connection) |
Voltage measurement | ±60/10/5/2.5/1.25 V, ±640/320/160/80/40/20 mV, 0…5/10 V (2-wire connection) |
Current measurement | ±20 mA, 0/4…20 mA, NAMUR NE43 (2-wire connection) |
IEPE measurement | ±2,5/5/10 V, current feed 2 mA, acquisition of the modulated AC voltage, AC/DC coupling (parameterizable high-pass), (2-wire connection) |
Potentiometer measurement | potentiometer ≥ 1 kΩ, supply integrated and adjustable 0…5 V (3-/5-wire connection) |
Resistance measurement | 0…50 Ω, 0…200 Ω, 0…500 Ω, 0…2 kΩ, 0…5 kΩ (2-/3-/4-wire connection) |
Temperature measurement (RTD) | Pt100, Pt200, Pt500, Pt1000, Ni100, Ni120, Ni1000, diverse KT/KTY (types see documentation) (2-/3-/4-wire connection) |
Temperature measurement (thermocouple) | type A1, A2, A3, B, C, D, E, G, J, K, L, N, P, R, S, T, U and others; internal/external/remote cold junction measurement (2-wire connection) |
Technical data | ELM3702-0101 |
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Number of channels | 2 |
Technology | multi-function |
Signal type | differential |
Connection technology | 2-/3-/4-/5-/6-wire |
Connection type | LEMO 1B, 8-pin |
Max. sampling rate | max. 100 µs/10 ksps (per channel, simultaneously) |
Oversampling factor | n = 1…100 selectable (max. 10 ksamples/s) |
Internal resistance | > 500 kΩ (60 V); > 4 MΩ (others); 150 Ω (current) |
Measurement error/uncertainty | typ. < ±100 ppm/±0.01% in some measuring ranges, relative to the respective full scale value, see documentation |
Temperature coefficient | up to typ. < 1 ppm/K in some measuring ranges, see documentation |
Functional diagnostics | yes |
Connection diagnostics | broken wire/short circuit |
Distributed clocks | yes, accuracy << 1 µs |
Resolution | 24 bit (incl. sign) |
Electrical isolation channel/channel | 707 V DC (type test) |
Electrical isolation channel/bus | 707 V DC (type test) |
Electrical isolation channel/SGND | 707 V DC (type test) |
Current consumption E-bus | typ. 580 mA |
Weight | approx. 350 g |
Operating/storage temperature | 0…+55°C/-25…+85°C |
Thermal dissipation | typ. 3 W |
Special features | ExtendedRange 107%, free numeric filter, TrueRMS, integrator/differentiator, non-linear scaling, PeakHold, galvanically isolated channels, integrated external cold junction measurement |
Approvals/markings | CE, UL |
Housing data | ELM-30-LEMO |
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Design form | metal housing with signal LEDs |
Material | zinc die-cast |
Dimensions (W x H x D) | 30 mm x 100 mm x 95 mm |
Installation | on 35 mm DIN rail, conforming to EN 60715 with lock |
Side by side mounting by means of | double slot and key connection |
Marking | – |
Wiring | LEMO |
*s: solid wire; st: stranded wire; f: with ferrule
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