EL6861 | EtherCAT Terminal, 1-channel communication interface, BACnet-MS/TP, RS485, D-sub
EL6861 | EtherCAT Terminal, 1-channel communication interface, BACnet-MS/TP, RS485, D-sub
The EL6861 serial interface enables the connection of BACnet MS/TP devices (Master-Slave/Token-Passing) via an RS485 interface. Up to 32 MS/TP devices can be connected (up to 64 if ultra-low power transceivers are used). The EL6861 interface can only be used in combination with TwinCAT, then at least a CX9020 is required. When using TwinCAT 3, at least a CX81xx since the BACnet MS/TP driver integrated in TwinCAT implements the communication via the MS/TP protocol (BACnet Revision 12). The configuration is also done in TwinCAT.
The RS485 interface guarantees high immunity to interference through electrically isolated signal transmission. The EL6861 provides 1 x 5 V DC at 20 mA (electrically isolated, short-circuit proof) from the E-bus supply for use with the bias resistors (network bias).
The following devices can be typically connected to the EL6861:
- frequency converters
- pumps
- drives (especially valve drives)
- room control units
- compact controllers (for example volume flow controllers)
Product status:
regular delivery
Product information
| Technical data | EL6861 |
|---|---|
| Technology | D-sub, 9-pin |
| Devices | 32, up to 64 if ultra-low power transceivers are used |
| Data transfer channels | 1 |
| Data transfer rates | 9600, 19,200, 38,400, 57,600, 76,800 and 115,200 baud (default: 9600 baud) |
| Interfaces | 1 x RS485 |
| Termination resistor | externally via ZB3100 or ZS1031-3000 connector |
| Bias resistor (network bias) | externally via ZB3100 or ZS1031-3000 connector |
| Cable length | max. 500 m twisted pair |
| Providing external supply | 1 x max. 5 V/20 mA, out of E-bus supply, short-circuit proof |
| Power supply | via the E-bus |
| Distributed clocks | – |
| Electrical isolation | 500 V (E-bus/signal voltage) |
| Bit width in the process image | 128 x 8 bit input, 128 x 8 bit output, 16 bit control, 16 bit status |
| Configuration | configuration via controller, TwinCAT |
| Current consumption power contacts | – |
| Current consumption E-bus | typ. 170 mA |
| Special features | can only be used with TwinCAT |
| Weight | approx. 55 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. rating/installation pos. | IP20/variable |
| Approvals/markings | CE, UL |
| Housing data | EL-24 |
|---|---|
| Design form | compact terminal housing with signal LEDs |
| Material | polycarbonate |
| Dimensions (W x H x D) | 24 mm x 100 mm x 52 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 | specific push-in connection |
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