2-channel input terminals PT100 (RTD) for 4-wire connection, high-precision EL3202-0020
Error LED 2
Run LED
Error LED 1 
Run LED 
Power contact
+24 V
Power contact 0 V
+R1
+RL1
-R1
-RL1
+R2
+RL2
-R2
-RL2
Top view 
Contact assembly 
factory calibration certificate

EL3202-0020 | 2-channel input terminals PT100 (RTD) for 4-wire connection, high-precision

The analog input terminal EL3202-0020 enables direct connection of resistance sensors. A microprocessor handles linearisation across the whole temperature range, which is freely selectable. The EtherCAT Terminal’s standard settings are: resolution 0.01 °C in the temperature range of PT100 sensors in 4-wire connection. The EtherCAT Terminal indicates its signal state by means of light emitting diodes. Sensor malfunctions such as broken wires are indicated by error LEDs. The accuracy of temperature measurement is ±0.1 °C at 40 °C ambient temperature. The terminal can only be operated with 4-wire connection, for 2- or 3-wire connection external wire jumpers must be set. The terminal can also be operated with other sensors than PT100, but the maximum accuracy is achieved with PT100 sensors.

The calibration certificate for the respective serial number can be downloaded from www.beckhoff.com/certificates.

Technical data EL3202-0020
Number of inputs 2
Power supply via the E-bus
Technology 4-wire
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 4-wire
Measuring range -200…+850 °C (PT sensors); -60…+250 °C (Ni sensors); -200…+320 °C (high-precision)
Resolution 0.01 °C per digit
Conversion time approx. 85 ms default setting, 2…800 ms configurable
Temperature range -200…+320 °C (PT sensors)
Measuring current < 0.5 mA (load-dependent)
Measuring error < ±0.1 °C at 40 °C ambient temperature, 4-wire connection, PT100 sensors (measuring range: -200…+320 °C) and 50 Hz filter
Calibration certificate factory calibrated
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 2 x 32 bit RTD input
Special features integrated digital filter, limit value monitoring, variable connection technology, with calibration certificate
Weight approx. 60 g
Operating/storage temperature 0…+55 °C/-25…+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
Approvals/markings CE, UL, ATEX
Ex marking II 3 G Ex nA IIC T4 Gc
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Accessories  
ZS9001 recalibration of I/O components with calibration certificate, includes check, compensation, recalibration, package price depending on terminal series
ZS9001-EL3202-0020 recalibration service for EL3202-0020: check, compensation, recalibration
Services and further information  
ZS9001-EL3202-0020 recalibration service for EL3202-0020: check, compensation, recalibration
ZS9001 recalibration of I/O components with calibration certificate, includes check, compensation, recalibration, package price depending on terminal series
ELxxxx-0020 EtherCAT Terminals with calibration certificate