Article image EL3314

Beckhoff EL3314

EL3314 | 4-channel thermocouple input terminal with open-circuit recognition

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Description

The EL3314 analog input terminal allows four thermocouples to be connected directly. The EtherCAT Terminal circuit can operate thermocouple sensors using the 2-wire technique. A microprocessor handles linearisation across the whole temperature range, which is freely selectable. The error LEDs indicate a broken wire. Compensation for the cold junction is made through an internal temperature measurement at the terminal. The EL3314 can also be used for mV measurement.

Technical parameters

Number of inputs: 4
Power supply: via the E-bus
Thermocouple sensor types: types K, J, L, E, T, N, U, B, R, S, C (default setting type K), mV measurement
Distributed clocks:
Input filter limit frequency: typ. 1 kHz; depending on sensor length, conversion time, sensor type
Connection method: 2-wire
Wiring fail indication: yes
Conversion time: approx. 2.5 s up to 20 ms, depending on configuration and filter setting, default: approx. 250 ms
Voltage measurement: ±30 mV…±75 mV
Temperature range: in the range defined in each case for the sensor (default setting: type K; -200…+1370 °C); voltage measurement: ±30 mV…±75 mV
Resolution: 0.1 °C per digit
Measuring error: < ±0.3 % (relative to full scale value)
Electrical isolation: 500 V (E-bus/signal voltage)
Current consumption power contacts:
Current consumption E-bus: typ. 200 mA
Bit width in the process image: 4 x 32 bit TC input, 4 x 16 bit TC output
Configuration: no address setting, configuration via the controller
Special features: open-circuit recognition
Weight: approx. 60 g
Operating/storage temperature: -25…+60 °C/-40…+85 °C
Relative humidity: 95 %, no condensation
Vibration/shock resistance: conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission: conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos.: IP 20/variable
Approvals/markings: CE, UL, ATEX, IECEx
Ex-Marking: II 3 G Ex nA IIC T4 Gc Ex nA IIC T4 Gc Ex tc IIIC T135 °C Dc

Logistic parameters

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