2-channel digital input terminal NAMUR, Ex i ELX1052
Error LED 2
Signal LED 2
Error LED 1 
Signal LED 1 
Power contact
+24 V EX
Power contact
0 V EX
Input 1
Input 2
Top view 
extended temperature range

ELX1052 | 2-channel digital input terminal NAMUR, Ex i

ExThe ELX1052 digital input terminal allows the direct connection of intrinsically safe field devices located in hazardous areas classified Zone 0/20 or 1/21 and acquires their signals in compliance with IEC 60947-5-6. The sensors are supplied with a voltage of 8.2 V and return a diagnosable current signal. In this way wire breakage or short circuit can be detected in addition to the switching state. The LEDs represent the signal states or any error states.

Technical data ELX1052
Technology DC switching amplifier
Specification IEC 60947-5-6
Number of inputs 2
Connection method 2-wire
Open circuit voltage typ. 8.2 V DC
“0” signal current ≤ 1.2 mA
“1” signal current ≥ 2.1 mA
Switching hysteresis typ. 0.3 mA
Short-circuit current typ. 8.2 mA
Fault detection I ≤ 200 µA (cable break), I ≥ 6.3 mA (short circuit)
Max. switching frequency typ. 50 Hz (duty factor 50 %)
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. 50 mA
Weight approx. 55 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/Markings CE, ATEX, IECEx
Ex-Marking II 3(1)G Ex ec [ia Ga] IIC T4 Gc
II (1)D [Ex ia Da] IIIC
I (M1) [Ex ia Ma] I
Ex ec [ia Ga] IIC T4 Gc
[Ex ia Da] IIIC
[Ex ia Ma] I
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