Processor Unit – For the Connection of FCS/FCI Product Series Ex Flow Sensors (NAEX) IO-Link Device with Relay Switching Outputs

Features

• • For Ex ia resp. Ex ib sensors
• • Relay output for flow, temperature and faults
• • Adjustment of switchpoint, no teaching of flow boundaries (QuickTeach)
• • LED band for indication of flow speed and media temperature
• • Monitoring of operating and display range
• • Detection of wire-break and short-circuit on the sensor side
• • Standard IO or IO-Link operating mode
• • Parametrized via pushbutton or software-supported via IO-Link
• • Associated equipment [Ex ia Ga/Da]
• • Connection of flow probes Zone 0/20

Functional principle

All Ex flow sensors from the FCS series (immersion sensors) and FCI series (inline sensors) can be operated with the FMX-IM external processing unit. The flow module features four status LEDs as well as a 10-segment LED band for local monitoring. Software-based diagnostic options are also available to the user, such as wirebreak and short-circuit on the sensor side. Furthermore, monitoring of flow rates and media temperatures within a predefined operating and display range. The upper and lower limits of the flow range are taught in using the max./min. teach mode implemented. The flow switchpoint is easily adjusted by means of the Quick-Teach function, without having to program a lower and upper limit of the flow range. Working on the calorimetric principle, the connectible sensors not only detect the flow rate but also the media temperature. The flow module can be operated either in IO-Link (IOL) or in standard IO (SIO) mode via the integrated IO-Link interface. In SIO mode, the switching outputs are operated in the standard way. In IOL mode the current process signal is transmitted cyclically as a 10 bit-serial value. Parametrization is initiated either via pushbutton or software-supported via IOLink interface. The actual parametrization is then implemented via the tool-based DTM or IODD within the FDT frame PACTware™ or acyclically near the control via On-Request Data Objects (ORDO).