1-channel analog output terminal 0/4…20 mA, single-ended, HART, 16 bit, Ex i ELX4181
Error LED
HART error LED 1 
Error LED 1 
Run LED 
Power contact
+24 V EX
Power contact
0 V EX
-Output 1
+Output 1
Top view 
extended temperature range
extended shock and vibration range 25g

ELX4181 | 1-channel analog output terminal 0/4…20 mA, single-ended, HART, 16 bit, Ex i

ExThe ELX4181 analog output terminal is used for the direct control of intrinsically safe field devices located in hazardous areas classified Zone 0/20 or 1/21. It can optionally function as a 0…20 mA or 4…20 mA interface and enables communication with the help of the HART protocol (Highway Adressable Remote Transducer). The HART protocol enables two-way communication through digital data transfer via the analog interface. The ELX4181 is supplied via the power contacts of the ELX9560 power feed terminal. The EtherCAT Terminal indicates the signal state by means of light emitting diodes. Error LEDs signal overload and wire breakage, and additional LEDs provide information about the state of the HART communication and indicate any communication errors.

Technical data ELX4181
Technology intrinsically safe actuators with HART support (Rev. 7)
Signal current 0/4…20 mA
Number of outputs 1 (single-ended)
Connection method 2-wire
Load < 500 Ω
Resolution 16 bit (incl. sign)
Conversion time typ. 1 ms
Supply voltage electronics 24 V DC (via power contacts), ELX9560 power supply
Current consumption power contacts typ. 10 mA + load
Current consumption E-bus typ. 85 mA
Distributed clocks yes
Special features parameterisable watchdog, activatable user calibration
Weight approx. 60 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/see documentation
Approvals CE, Ex
further Ex components  
ELXxxxx EtherCAT Terminals with intrinsic safe in- and output
ELXxxxx-0090 EtherCAT Terminals with intrinsic safe in- and output and TwinSAFE SC
CPXxxxx Multi-touch Panel PCs and multi-touch Control Panels for use in hazardous areas, Zone 2/22
Product announcement
estimated market release 2nd quarter 2018