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EL3318 | EtherCAT Terminal, 8-channel analog input, temperature, thermocouple, 16 bit

EL3318 | EtherCAT Terminal, 8-channel analog input, temperature, thermocouple, 16 bit

EL3318 | EtherCAT Terminal, 8-channel analog input, temperature, thermocouple, 16 bit

Signal LED 1
Error LEDs
9...16
Power contact
+24 V
Power contact 0 V
+TC1
+TC2
+TC3
+TC4
+TC5
+TC6
+TC7
+TC8
-TC1
-TC2
-TC3
-TC4
-TC5
-TC6
-TC7
-TC8
Top view 
Contact assembly 
Observe for earthed
thermocoupler:
differential inputs
max. ± 2 V to ground
EL3318 | EtherCAT Terminal, 8-channel analog input, temperature, thermocouple, 16 bit

EL3318 | EtherCAT Terminal, 8-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 EL3318 analog input terminal allows eight thermocouples to be connected directly and is thus particularly suitable for space-saving use in control cabinets. The EtherCAT Terminal circuit can operate thermocouple sensors using the 2-wire technique. A microprocessor handles linearization 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 EL3318 can also be used for mV measurement.

The HD EtherCAT Terminals (High Density) with increased packing density feature 16 connection points in the housing of a 12 mm terminal block.

Product status:

regular delivery

Product information

Technical dataEL3318
Number of inputs8
Power supplyvia the E-bus
Distributed clocks
Input filter limit frequencytyp. 1 kHz
Connection method2-wire
Conversion timeapprox. 2.5 s up to 20 ms, depending on configuration and filter setting, default: approx. 250 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: ±6.3°C; C: ±4.9°C; E: ±3.1°C; J: ±3.2°C; K: ±3.4°C; L: ±3.1°C; N: ±3.4°C; R: ±5.2°C; S: ±5.4°C; T: ±3.3°C; U: ±3.2°C; for further details see documentation
Measurement uncertainty (voltage measurement)at ±75 mV, 23°C ambient temperature: < ±0.096% (relative to full scale value)
Electrical isolation500 V (E-bus/signal voltage)
Current consumption power contacts
Current consumption E-bustyp. 210 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. 70 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
Protect. rating/installation pos.IP20/variable
Approvals/markingsCE, UL, ATEX, IECEx, cFMus
Ex markingATEX:
  II 3G Ex ec IIC T4 Gc
IECEx:
  Ex ec IIC T4 Gc
cFMus:
  Class I, Division 2, Groups A, B, C, D
  Class I, Zone 2, AEx ec IIC T4 Gc
Housing dataEL-12-16pin
Design formHD (High Density) 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 conductors (s): direct plug-in technique; fine-stranded conductors (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…1.5 mm²,
st*: 0.25…1.5 mm²,
f*: 0.14…0.75 mm²
Connection cross-section AWGs*: AWG28…16,
st*: AWG22…16,
f*: AWG26…19
Stripping length8…9 mm
Current load power contactsImax: 10 A

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

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