EL3742
EL3742 | 2-channel analog input terminal 0…20 mA, differential input, with oversampling
The EL3742 analog input terminal handles signals in the range between 0 and 20 mA. The voltage is digitised to a resolution of 16 bits, and is transmitted, electrically isolated, to the controller. The input channels of the EtherCAT Terminal have differential inputs and possess a common, internal ground potential. 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 collected and transferred 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 EL3742 devices to be synchronised in almost any configuration. The maximum sampling rate per channel is 100 ksamples/s (100,000 samples/s).
Number of inputs: | 2 (differential) |
Power supply: | via the E-bus |
Technology: | differential input, oversampling |
Signal current: | 0…20 mA |
Max. sampling rate: | max. 10 µs/100 ksps (per channel, simultaneously) |
Oversampling factor: | n = 1…100 selectable |
Input signal bandwidth: | 0…30 kHz recommended |
Distributed clocks: | yes |
Distributed clock precision: | << 1 µs |
Internal resistance: | typ. 85 Ω + diode voltage |
Input filter limit frequency: | 80 kHz |
Common-mode voltage UCM: | max. 10 V |
Conversion time: | min. 10 µs |
Resolution: | 16 bit (incl. sign) |
Measuring error: | < ±0.3 % (relative to full scale value) up to 10 Hz input signal |
Surge voltage resistance: | max. 35 V |
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: | -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 |
Pluggable wiring: | for all ESxxxx terminals |
Approvals/markings: | CE, UL, ATEX |
Ex-Marking: | II 3 G Ex nA IIC T4 Gc |
ТН ВЭД: | |
Страна происхождения: | |
EAN: | |
Вес: | 0,00 kg |
Длина: | 0,00 m |
Ширина: | 0,00 m |
Высота: | 0,00 m |