Datasheet > ELM3702-0000

ELM3702-0000

更新时间： 2024-01-19 19:24:24

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
2页	247K
描述
1-channel multi-functional input for analog measurement technology, 24 bit, 10 ksps

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ELM3702-0000 数据手册

Analog input

EL3751

Run LED

OK/Error LED

+Input 1

+Input 2

-Input 1

-Input 2

+Uv

-Uv

Shield (FE)

Top view

Contact assembly

EL3751 | 1-channel multi-functional input for analog

measurement technology, 24 bit, 10 ksps

The EL3751 analog input terminal is part of the new generation of analog EtherCAT measurement terminals. The nominal measuring range of the input

channel can be comprehensively parameterised, both electrically and on the software side:

voltage measurement: ±5 mꢀ to ±3ꢁ ꢀ (incl. ±1ꢁ ꢀ), ꢁ…10 V, ꢁ…5 V

current measurement: ±±ꢁ mA, 4…20 mA, ꢁ…20 mA, NAMUR NE43

resistance measurement: ꢁ…5 kΩ

electrical resistance R in ±-/3-/4-wire connection

RTD measurement in ±-/3-/4-wire connection

strain gauge/load cell: ¼ bridge (35ꢁ Ω + 1±ꢁ Ω), ½ bridge (±1ꢂ mꢀ/ꢀ) and full bridge (±3± mꢀ/ꢀ) with integrated supply in ±-/3-/4-/5-/ꢂ-wire

connection

potentiometer: min. 1 kΩ

The measuring ranges generally reach accuracy class ꢁ.ꢁ1 %. For further information please refer to the documentation. Through the feature

“ExtendedRange” the user has the full technical measuring range available, up to 1ꢁ7 % of the specified nominal measuring range, depending on the

measuring range. This feature can be disabled, in order to ensure compatibility with the “LegacyRange” of the EL3ꢁxx/EL31xx series.

To suppress aliasing effects, the input channel features two configurable numeric software filters up to 39 order FIR/ꢂ order IIR. The filters can be

preselected or freely described, so that a band stop or a band pass can be realised. The measurement at the differential input channel is digitised with a

resolution of ±4 bit and 1ꢁ ksps and is transmitted to the higher-level automation device electrically isolated and optionally with oversampling. The data

rate can be internally reduced, in which case the filters have to be adjusted accordingly. Non-linear characteristic sensor curves can be corrected flexibly

through an integrated sampling points table. Simple mathematical operations are also possible.

The integrated supply and the switchable auxiliary resistors enable direct connection of a resistor bridge (strain gauge) or a load cell, a fixed ohmic

resistor, a PTC or a potentiometer. The signal state of the EtherCAT Terminal is indicated by light emitting diodes. Each terminal has a unique ID number.

Technical data

EL3751

Number of inputs

Power supply

via the E-bus

Technology

differential input, ±-/3-/4-/5-/ꢂ-wire connection

Oversampling factor

Distributed clocks

Distributed clock precision

Internal resistance

Input filter limit frequency

Dielectric strength

Conversion time

n = 1…64

yes

<< 1 µs

> 5ꢁꢁ kΩ (3ꢁ ꢀ);> 4 MΩ (others); 15ꢁ Ω (current)

3 kHz

max. 3ꢂ ꢀ

1ꢁꢁ µs/1ꢁ ksps

Measuring range, nominal

±3ꢁ/1ꢁ/5/±.5/1.±5 ꢀ, ±ꢂ4ꢁ/3±ꢁ/1ꢂꢁ/ꢃꢁ/4ꢁ/±ꢁ/1ꢁ/5 mꢀ, ꢁ…5/10 V, 20 mA, ꢁ/4…20 mA, NAMUR NE43, ꢁ…5 kΩ, RTD,

PT1ꢁꢁ/PT1ꢁꢁꢁ, Ni, KTY, ¼ bridge (35ꢁ Ω + 1±ꢁ Ω), ½ bridge (±1ꢂ mꢀ/ꢀ), full bridge (±3± mꢀ/ꢀ), potentiometer ≥ 1 kΩ

Measuring range, technical

Resolution

generally 1ꢁ7 % of the nominal measuring range, see documentation

±4 bit (incl. sign)

Measuring error

typ. ±ꢁ.ꢁ1 % relative to the respective full scale value @ ±3 °C in some measuring ranges, see documentation

typ. < 15 ppm/K in some measuring ranges, see documentation

5ꢁꢁ ꢀ (E-bus/signal voltage)

Temperature coefficient

Electrical isolation

BECKHOFF New Automation Technology

We reserve the right to make technical changes.

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