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Beckhoff Automation Sp. z o.o.

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EL3311 | EtherCAT Terminal, 1-channel analog input, temperature, thermocouple, 16 bit

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EL3311 | EtherCAT Terminal, 1-channel analog input, temperature, thermocouple, 16 bit

EL3311 | EtherCAT Terminal, 1-channel analog input, temperature, thermocouple, 16 bit

Run LED 1
Error LED 1
Power contact
+24 V
Power contact 0 V
+TC1
GND
Shield
-TC1
GND
Shield
Top view 
Contact assembly 
Observe for earthed
thermocoupler:
differential inputs
max. ± 2 V to ground
EL3311 | EtherCAT Terminal, 1-channel analog input, temperature, thermocouple, 16 bit

EL3311 | EtherCAT Terminal, 1-channel analog input, temperature, thermocouple, 16 bit

Thermocouple measurement with Beckhoff components: precise and fast

Measurement technology easily configured: Analog EtherCAT input terminals.

Measurement technology simply integrated: With the analog EtherCAT Terminals.

Thermocouple measurement with Beckhoff components: precise and fast

Measurement technology easily configured: Analog EtherCAT input terminals.

Measurement technology simply integrated: With the analog EtherCAT Terminals.

The EL3311 analog input terminal allows thermocouples to be connected directly. The EtherCAT Terminal's circuit can operate thermocouple sensors using the 2-wire technique. Linearization over the full temperature range is realized with the aid of a microprocessor. The temperature range can be selected freely. The error LEDs indicate a broken wire. Compensation for the cold junction is made through an internal temperature measurement at the terminal. The EL3311 can also be used for mV measurement.

Product status:

regular delivery

Product information

Technical dataEL3311
Number of inputs1
Power supplyvia the E-bus
Distributed clocks
Input filter limit frequencytyp. 1 kHz
Connection method2-wire
Conversion timeapprox. 750 ms up to 20 ms, depending on configuration and filter setting, default: approx. 75 ms
Voltage measurement±30/±60/±75 mV
Resolution16 bit, representation adjustable: 0.1/0.01°C or 1/2/4 µV per digit
Temperature measurement (thermocouple)type B, C, E, J, K, L, N, R, S, T, U (default setting: type K)
Measurement uncertainty (temperature measurement)at 23°C ambient temperature, with internal cold junction, according type: B: ±8.5°C; C: ±6.2°C; E: ±2.5°C; J: ±2.7°C; K: ±3°C; L: ±2.3°C; N: ±3°C; R: ±6.7°C; S: ±7.1°C; T: ±2.9°C; U: ±2.5°C; for further details see documentation
Measurement uncertainty (voltage measurement)at ±75 mV, 23°C ambient temperature: < ±0.14% (relative to full scale value)
Electrical isolation500 V (E-bus/signal voltage)
Current consumption power contacts
Current consumption E-bus200 mA
Special featureschannel by channel wire break detection, internal and external cold junction, firmware filter adjustable
Operating/storage temperature-25…+60°C/-40…+85°C
Weightapprox. 60 g
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Approvals/markingsCE, UL, ATEX, IECEx
Protect. rating/installation pos.IP20/variable
Ex markingATEX:
II 3 G Ex ec IIC T4 Gc
IECEx:
Ex ec IIC T4 Gc
Housing dataEL-12-8pin
Design formcompact terminal housing with signal LEDs
Materialpolycarbonate
Dimensions (W x H x D)12 mm x 100 mm x 68 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Markinglabeling of the BZxxx series
Wiringsolid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWGs*: AWG28…14,
st*: AWG28…14,
f*: AWG26…16
Stripping length8…9 mm
Current load power contactsImax: 10 A

*s: solid wire; st: stranded wire; f: with ferrule

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