EPX Series EtherCAT I/Os provide intrinsic safety (IS) in IP67 form factors by combining EtherCAT Box and IS I/O modules that enable decentralized acquisition of Ex i signals from zones 0/20 and 1/21 to enhance insights in hazardous environments. Interface options are available for HART, NAMUR and FDT/DTM standards. As a robust alternative to IP20 solutions with added enclosures, EPX modules enable reliable data collection, even in hazardous areas where no control cabinet or terminal box can or should be installed. They also have a compact, modular design, and save further space because formerly required safety barriers are no longer needed.
EPX series initially comprises three modules with four or eight input channels:
- EPX1058 is designed for direct connection of up to eight intrinsically safe NAMUR field devices and records their signals pursuant to IEC 60947-5-6. In addition to the switching state, open circuit or short circuit is also detected. Channel by channel, it’s possible to select whether a positive or negative switching sensor is connected, so both NAMUR normally open/break contacts and NAMUR normally closed/make contacts can be integrated into the control system without changes in the program. Potential-free contacts can also be used.
- EPX3158 supplies a maximum of eight measuring transducers located in the field and transmits their analog, electrically isolated, 4-20 mA measuring signals to the automation device. Appropriate two-wire and three-wire sensors can be connected. With a technical measuring range of +107% of the nominal range, this EtherCAT Box also supports commissioning with sensor values in the limit range and evaluation according to NAMUR NE43. Any overload or wire break is signaled by LEDs.
- EPX3184, which connects up to four IS, HART-capable field devices, provides information on the state of HART communication via LEDs and signals any communication errors. HART connectivity enables two-way communication via the analog 4-20 mA wiring and can also be used for the FDT/DTM concept. Field device DTMs can be directly integrated into the TwinCAT engineering environment via the TwinCAT FDT container.
Beckhoff Automation
