2.10 Current loop wiring
The BlueEye™ Ex-D features a single, passive 4-20 mA current loop.
In order to use the current loop correctly, it has to be powered with 24VDC as shown in the figure below.
Figure 7: BlueEye™ Ex-D passive current loop wiring
2.11 RS-485 Modbus RTU connection
The BlueEye™ Ex-D is configured for both full-duplex (4-wire) and half-duplex (2-wire) RS485 Modbus.
Figure 7: BlueEye™ Ex-D RS-485 Modbus RTU connection
For installation in hazardous areas ensure that the enclosure is potentially equalized. To increase immunity
against electromagnetic interference, Bright Sensors SA recommends connecting the shield of the cable to
earth at the outer end. Attention for applications in hazardous areas, it must be ensured that potential
equalization exists between the various earthing points (i.e. between the hazardous area and safe area). For
more information, please refer to standard EN 60079-14. Cover flying leads with fine wires by an end splice
(cable preparation).
Ensure that supplied voltage adheres to the specified electrical characteristics and never exceeds the
maximum limit.
Electrostatic discharge can damage equipment, impair electrical circuitry, and can result in complete or
intermittent failures. Always place the protective caps on the connector when they are not used and do not
touch the connector pins.
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