4-channel universal input terminal for RTD up to 240 kΩ, NTC 20 k, 16 bit EL3204-0200
Error LED 4
Run LED
Error LED2
Run LED
Error LED3 
Run LED 
Error LED1 
Run LED 
Power contact
+24 V
Power contact 0 V
+R1
-R1
+R3
-R3
+R2
-R2
+R4
-R4
Top view 
Contact assembly 
extended shock and vibration range

EL3204-0200 | 4-channel universal input terminal for RTD up to 240 kΩ, NTC 20 k, 16 bit

The analog EL3204-0200 input terminal enables direct connection of four resistance sensors up to 240 kΩ, so that the usable measuring range is significantly larger compared with the EL3204. The EtherCAT Terminal circuit can operate sensors using the 2-wire technique. The resistance values are converted (linearisation) in the terminal either based on preset characteristic curves, conversion formulas with specific material parameters (e.g. according to IEC 60751, Steinhart-Hart equation, B-parameter equation), or a freely programmable conversion table. Sensor malfunctions such as broken wires are indicated by error LEDs.

Technical data EL3204-0200
Number of inputs 4
Power supply via the E-bus
Distributed clocks
Sensor types Ni/PT, any RTD in the range of 100 Ω…240 kΩ, calculation possible on the basis of a table or material constant, resistance measurement
Connection method 2-wire
Conversion time approx. 24 ms default setting, 4…500 ms configurable
Measuring current < 0.03 mA typ.
Resolution 0.1 °C per digit
Measuring error < ±0.3 % relative to full scale value (6 kΩ, 65 kΩ, 240 kΩ)
Electrical isolation 500 V (E-bus/signal voltage)
Current consumption power contacts
Current consumption E-bus typ. 150 mA
Bit width in the process image 4 x 32 bit RTD input
Special features temperature calculation on the basis of Steinhart-Hart, B parameters, IEC 60751, free table, predefined sensors
Weight approx. 60 g
Operating/storage temperature 0…+55 °C/-25…+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/variable
Approvals CE, UL, Ex