Beckhoff provides a compact acquisition solution for intrinsically safe signals up to zone 0/20 with the IP67-protected EtherCAT Box modules of the EPX series. Three additional devices have been added to the existing I/O range.
Using EPX modules with IP67-rated housing units offers numerous advantages for applications with explosion protection requirements, both in processing plants and in traditional mechanical engineering. The fully encapsulated modules in an industrial housing unit can be installed directly and individually in machines and systems, even in wet, dirty or dusty conditions, and enable connection of up to eight field devices. This facilitates reliable data acquisition in hazardous areas where control cabinets and terminal boxes cannot – and should not – be installed.
Furthermore, safety barriers are no longer required, which not only saves on space but also reduces costs. Pre-assembled cables are connected to the EtherCAT Box module, cutting down on installation and commissioning time and preventing wiring errors caused by incorrect contact assignments. What’s more, the distributed signal acquisition concept also simplifies the modularity of plants. The new additions to the portfolio are:
• The EPX2004-0022 EtherCAT Box module provides an output voltage of 24 V DC and a maximum output current of 50 mA per channel as a 4-channel digital output, with total current 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 analogue input. Linearisation 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, for example wire break.
• The EPX3314-0022 EtherCAT Box module, which can operate thermocouples in 2-wire technology as a 4-channel analogue input.Linearisation 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.
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