With the ELM2742 Beckhoff is considerably extending the usage possibilities of the integrated measurement technology of the ELM3xxx series as well as the normal EL3xxx/EL4xxx analog inputs and outputs, because several sensors or sources can now be connected at the same time to one analog input channel. To this end, the ELM2742 is equipped with non-wearing solid-state relays (semiconductor switches) as switching elements, which are specially designed for small analog signals and thus set themselves apart from normal solid-state terminals like the EL279x. Due to the extremely low leakage current in the nA range in the opened state, the parallel-connected signals hardly influence each other at all. The multi-channel recording of analog signals as well as the flexible switching of various test states in production-integrated test stations is thus simple to achieve without externally connected switches.
Product status:
regular delivery
Product information
Technical data | ELM2742-0000 |
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Technology | multiplexer |
Connection technology | 2-wire MOSFET output |
Number of channels | 2 |
Number of outputs | 2 x multiplexer 1 on 4 |
Nominal voltage | 48 V AC/DC |
Load type | ohmic |
Distributed clocks | – |
Ohmic switching current | 1 A AC/DC per channel (in the operating temperature range, 2 A at 25 °C ambient temperature) |
Inductive switching current | no data |
Current consumption E-bus | typ. 60 mA |
Electrical isolation | 500 V (E-bus/field potential) |
Current consumption power contacts | typ. 20 mA |
Configuration | no address or configuration setting |
On-resistance | typ. 0.1 Ω |
Switching on speed | typ. 1 ms, max. 5 ms |
Switching off speed | typ. 1 ms, max. 5 ms |
Breakdown voltage | 80 V |
Short-circuit current | not short-circuit proof, see peak current |
Peak current | 5 A (100 ms) |
Special features | wear-free solid-state relay (semiconductor) |
Weight | approx. 350 g |
Operating/storage temperature | 0…+55°C/-25…+85°C |
Approvals/markings | CE |
Housing data | ELM-30-xpin |
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Design form | metal housing with signal LEDs |
Material | zinc die-cast |
Dimensions (W x H x D) | 30 mm x 100 mm x 95 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 | – |
Wiring | solid conductors (s): direct plug-in technique; fine-stranded conductors (st) and ferrule (f): spring actuation by screwdriver |
Connection cross-section | s*: 0.2…1.5 mm², st*: 0.2…1.5 mm², f*: 0.25…0.75 mm² |
Connection cross-section AWG | s*: AWG24…14, st*: AWG24…14, f*: AWG24…14 |
Stripping length | 8…9 mm |
*s: solid wire; st: stranded wire; f: with ferrule
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