EL6861 EtherCAT Terminal BACnet-MS/TP
Description
EL6861 EtherCAT Terminal supports BACnet MS/TP in addition to BACnet/IP for building automation. A serial interface can be used to directly control and monitor BACnet-compatible field devices, such as pumps, drives, and frequency converters without the need for additional gateways or routers.
Up to 64 devices with RS485 low power transceivers can be connected to this I/O terminal. In addition, several terminals can be operated in parallel to scale the number of supported MS/TP channels.
Using the 1-channel BACnet MS/TP interface, hardware and engineering costs can be significantly reduced since the configuration is performed centrally in the TwinCAT System Manager and external devices such as routers or gateways are no longer required. Combined with the BACnet MS/TP driver integrated within TwinCAT automation software, the EL6861 terminal implements BACnet in compliance with Revision 12 of the protocol. The terminal can also be used locally without routing to the BACnet/IP network.
The RS485 interface guarantees high interference immunity through electrically isolated signal transmission. The EL6861 provides 1 x 5V DC at 20 mA (electrically isolated, short-circuit-proof) from the EtherCAT E-bus supply for use with bias resistors (network bias).
Specs
| Technology | D-sub, 9-pin |
|---|---|
| Devices | 32, up to 64 if ultra-low power transceivers are used |
| Data transfer channels | 1 |
| Data transfer rates | 9,600; 19,200; 38,400; 57,600; 76,800; and 115,200 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. 5V/20 mA, out of E-bus supply, short-circuit proof |
| Power supply | via the E-bus |
| Electrical isolation | 500V (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 E-bus | typ. 170 mA |
| Special features | can only be used with TwinCAT |
| Weight | approx. 55 g |
| Operating/storage temperature | -13 to 140°F / -40 to 185°F |
| Relative humidity | 95%, no condensation |
| Vibration/shock resistance | EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | EN 61000-6-2/EN 61000-6-4 |
| Protect. rating/installation pos. | IP20/variable |
| Approvals/markings | CE, UL |
| Design form | compact terminal housing with signal LEDs |
|---|---|
| Material | polycarbonate |
| Dimensions (W x H x D) | 0.9 x 4 x 2 in. |
| Installation | on 1.4-in. (35 mm) DIN rail, conforming to EN 60715 with lock |
| Side by side mounting by means of | double slot and key connection |
| Wiring | specific push-in connection |