+24 V
EL3702 | 2-channel analog input terminal -10…+10 V with oversampling
The EL3702 analog input terminal handles signals in the range between -10 and +10 V. The voltage is digitised to a resolution of 16 bits, and is transmitted, electrically isolated, to the controller. The signals are oversampled with an adjustable, integer multiple (oversampling factor: n) of the bus cycle time (n microcycles per bus cycle). For each microcycle, the EtherCAT Terminal generates a process data block that is transferred collectively during the next bus cycle. The time base of the terminal can be synchronised precisely with other EtherCAT devices via distributed clocks. This procedure enables the temporal resolution of the analog input signals to be increased to n times the bus cycle time. In conjunction with the EL47xx (analog output terminal with oversampling), responses with equidistant time intervals, e.g. in the event of a threshold value being exceeded, become possible.
The distributed clocks function enables several EL3702 devices to be synchronised in almost any configuration. The maximum sampling rate per channel is 100 ksamples/s (100,000 samples/s).
| Technical data | EL3702 | ES3702 |
|---|---|
| Number of inputs | 2 (differential) |
| Power supply | via the E-bus |
| Technology | differential input, oversampling |
| Signal voltage | -10…+10 V |
| Oversampling factor | n = 1…100 selectable |
| Distributed clocks | yes |
| Distributed clock precision | << 1 µs |
| Internal resistance | > 200 kΩ |
| Input filter limit frequency | 30 kHz |
| Common-mode voltage UCM | 35 V max. |
| Conversion time | ~ 10 µs per sample |
| Input signal bandwidth | 0…30 kHz recommended |
| Resolution | 16 bits (incl. sign) |
| Measuring error | < ±0.3 % up to 10 Hz (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 | input: n x 2 x 16 bit data; optionally 2 x 16 bit cycle counter, 4 byte StartNextLatch time |
| Special features | oversampling |
| Weight | approx. 60 g |
| Operating/storage temperature | 0…+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 |
| Pluggable wiring | for all ESxxxx terminals |
| Approvals | CE, UL, Ex |
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| Further information | |
|---|---|
| XFC | eXtreme Fast Control Technology |
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