Beckhoff offers a compact solution for acquiring intrinsically safe signals up to zone 0/20 using the IP67-rated EtherCAT Box modules from the EPX series. Three more devices have been included in the current I/O range.
Employing EPX modules with IP67-rated enclosures provides many benefits for applications that necessitate explosion protection, applicable in both processing facilities and conventional mechanical engineering. The entirely enclosed modules within an industrial housing unit can be installed independently and directly in machines and systems, even in damp, unclean, or dusty environments, facilitating connections to as many as eight field devices.
This enables trustworthy data collection in dangerous locations where control cabinets and terminal boxes cannot – and must not – be placed. Moreover, safety barriers are no longer needed, which not only conserves space but also cuts expenses. Pre-made cables are linked to the EtherCAT Box module, reducing installation and commissioning duration and avoiding wiring mistakes due to wrong contact connections. Additionally, the concept of distributed signal acquisition also streamlines the modularity of plants.
- The EPX2004-0022 EtherCAT Box module, which provides an output voltage of 24 V DC and a maximum output current of 50 mA per channel as a 4-channel digital output. The total current is 200 mA. The signal state of each individual channel is indicated by an LED.
- The EPX3204-0022 EtherCAT Box module, which can operate temperature sensors (Pt100) in 2-, 3- and 4-wire technology as a 4-channel analog input. Linearization is performed across the entire, freely selectable temperature range. The terminal is set by default for Pt100 sensors in 4-wire technology. The EPX3204-0022 uses LEDs to indicate signal status and sensor faults (e.g. wire break).
- The EPX3314-0022 EtherCAT Box module, which can operate thermocouples in 2-wire technology as a 4-channel analog input. Linearization is performed across the entire, freely selectable temperature range. Wire break is indicated by error LEDs. Cold junction compensation is performed by internal temperature measurement. Voltage measurement in the mV range is also possible.