EL3218 | 8-channel input terminal PT100 (RTD) for 3-wire connection
EL3218 | 8-channel input terminal PT100 (RTD) for 3-wire connection
The EL3218 analog input terminal allows eight resistance sensors to be connected directly. The EtherCAT Terminal circuit can operate sensors using the 3- or 2-wire technique in a compact 24 mm housing. A microprocessor handles linearization across the whole temperature range, which is freely selectable. Sensor malfunctions such as broken wires are indicated by error LEDs.
Product status:
Regular delivery
Product information
| Technical data | EL3218 |
|---|---|
| Number of inputs | 8 |
| Power supply | via the E-bus |
| Technology | 2-/3-wire |
| Signal type | differential |
| Distributed clocks | – |
| Input filter limit frequency | typ. 1 kHz |
| Sensor types | PT100, PT200, PT500, PT1000, Ni100, Ni120, Ni1000, resistance measurement (e.g. potentiometer, 10 Ω…1/4 kΩ), KTY sensors (types see documentation) |
| Connection method | 2- or 3-wire (default: 3-wire) |
| Conversion time | approx. 170 ms default setting |
| Measuring current | < 0.5 mA (load-dependent) |
| Measuring range | -200…+850 °C (PT sensors); -60…+250 °C (Ni sensors) |
| Temperature range | -200…+850 °C (PT sensors); -60…+250 °C (Ni sensors) |
| Resolution | 0.1 °C or 0.01 °C per digit |
| Measuring error | < ±0.5 °C for PT sensors, 8 x 3-wire connection |
| Electrical isolation | 500 V (E-bus/signal voltage) |
| Current consumption power contacts | – |
| Current consumption E-bus | typ. 120 mA |
| Special features | integrated digital filter, limit value monitoring, variable connection technology |
| Weight | approx. 60 g |
| Operating/storage temperature | -25…+55 °C/-25…+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 |
| Housing data | EL-24-2x16pin |
|---|---|
| Design form | HD (High Density) housing with signal LEDs |
| Material | polycarbonate |
| Dimensions (W x H x D) | 24 mm x 100 mm x 71 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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