Analog input module Beckhoff EL3172

Technical specifications

Analog inputs

2 differential multifunction voltage/current inputs; 16-bit including sign; SAR ADC; simultaneous sampling

Nominal ranges

Voltage −10/0…+10 V; current −25/−20/0/+4…+20/+25 mA

Technical ranges

Voltage −10.73…+10.73 V; current −26.82…+26.82 mA

Measurement uncertainty

Relative to nominal full scale: < ±0.2% at 25 °C ±5 °C; otherwise < ±0.3%

Timing

Conversion time minimum 150 µs; not a guaranteed EtherCAT cycle time

Ground and isolation

Differential; channel/channel and channel/fieldbus functional isolation tested at 707 V for 7 s; not a continuous working-voltage rating

Common-mode voltage

Maximum 50 V for voltage and current measurement

E-bus consumption

Typically 150 mA

Input resistance

Voltage >200 kΩ; current typically 85 Ω; input filter cutoff 5 kHz

Operating temperature

−25…+60 °C; humidity 95%, no condensation

Housing

IP20; 35 mm DIN rail; approximately 15 × 100 × 70 mm, aligned width 12 mm; approximately 65 g. Confirm installed housing/revision before cabinet design.

Interface

EtherCAT; Distributed Clocks; configurable voltage/current mode via CoE