1-channel input terminal PT100 (RTD) for 2-, 3- or 4-wire connection EL3201
Error LED 1 
Run LED 
Power contact
+24 V
Power contact 0 V
+R1
+RL1
-R1
-RL1
Shield
Top view 
Contact assembly 
extended temperature range
extended shock and vibration range 25g

EL3201 | 1-channel input terminal PT100 (RTD) for 2-, 3- or 4-wire connection

The EL3201 analog input terminal allows resistance sensors to be connected directly. The EtherCAT Terminal circuitry can operate 2-, 3- and 4-wire sensors (also in the 2-channel version EL3202-0010). A microprocessor handles linearisation across the whole temperature range, which is freely selectable. The EtherCAT Terminal’s standard settings are: resolution 0.1 °C in the temperature range of PT100 sensors in 3-wire connection. The EtherCAT Terminals indicate their signal state by means of light emitting diodes. Sensor malfunctions such as broken wires are indicated by error LEDs.

Technical data EL3201, ES3201
Number of inputs 1
Power supply via the E-bus
Technology Temperature measurement (RTD)
Distributed clocks
Input filter limit frequency typ. 1 kHz
Sensor types PT100, PT200, PT500, PT1000, Ni100, Ni120, Ni1000 resistance measurement (e.g. potentiometer, 10 Ω…1/4 kΩ), KTY sensors (types see documentation)
Connection method 2-, 3-, 4-wire (default: 2-wire)
Resolution 0.1 °C per digit
Conversion time approx. 24 ms default setting, 4…500 ms configurable
Temperature range -200…+850 °C (PT sensors); -60…+250 °C (Ni sensors)
Measuring current < 0.5 mA (load-dependent)
Measuring error < ±0.5 °C for PT sensors
Electrical isolation 500 V (E-bus/signal voltage)
Current consumption power contacts
Current consumption E-bus typ. 190 mA
Bit width in the process image 1 x 32 bit RTD input
Special features integrated digital filter, limit value monitoring, variable connection technology
Weight approx. 60 g
Operating/storage temperature -25…+60 °C/-40…+85 °C
Relative humidity 95 %, no condensation
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
Protect. class/installation pos. IP 20/variable
Pluggable wiring for all ESxxxx terminals
Approvals/markings CE, UL, ATEX
Ex marking II 3 G Ex nA IIC T4 Gc
Special terminals
EL3201-0010 1-channel analog input terminal, PT100 (RTD), 16 bit, high-precision
EL3201-0020 1-channel analog input terminal, PT100 (RTD), 16 bit, high-precision, with calibration certificate, calibrated version of EL3201-0010
EL3201-0030 1-channel analog input terminal, PT100 (RTD), 16 bit, high-precision, with external calibration certificate, calibrated version of EL3201-0010