EL3318 | HD EtherCAT Terminal, 8-channel thermocouple input with open-circuit recognition
9...16
+24 V
thermocoupler:
differential inputs
max. ± 2 V to ground
EL3318 | HD EtherCAT Terminal, 8-channel thermocouple input with open-circuit recognition
Thermocouple measurement with Beckhoff components: precise and fast
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 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 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 data | EL3318 |
|---|---|
| Number of inputs | 8 |
| 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 |
| Signal type | differential |
| 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. 5 s up to 40 ms, depending on configuration and filter setting, default: approx. 500 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. 210 mA |
| Bit width in the process image | 8 x 32 bit TC input, 8 x 16 bit TC output |
| Configuration | no address setting, configuration via the controller |
| Conductor types | solid wire, stranded wire and ferrule |
| Conductor connection | solid wire conductors: direct plug-in technique; stranded wire conductors and ferrules: spring actuation by screwdriver |
| Rated cross-section | solid wire: 0.08…1.5 mm²; stranded wire: 0.25…1.5 mm²; ferrule: 0.14…0.75 mm² |
| Special features | open-circuit recognition |
| Weight | approx. 70 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, cFMus |
| Ex marking | ATEX: II 3 G Ex nA IIC T4 Gc cFMus: Class I, Division 2, Groups A, B, C, D Class I, Zone 2, AEx ec IIC T4 Gc |
| Housing data | EL-12-16pin |
|---|---|
| Design form | HD (High Density) housing with signal LEDs |
| Material | polycarbonate |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 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 | Labeling of the BZxxx series |
| Wiring | solid conductors (e): direct plug-in technique; fine-stranded conductors (f) and ferrule (a): spring actuation by screwdriver |
| Connection cross-section | s*: 0.08…1.5 mm², st*: 0.25…1.5 mm², f*: 0.14…0.75 mm² |
| Connection cross-section AWG | s*: AWG 28…16, st*: AWG 22…16, f*: AWG 26…19 |
| Stripping length | 8…9 mm |
| Current load power contacts | Imax: 10 A |
*s: solid wire; st: stranded wire; f: with ferrule
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