Analog input module Beckhoff EL3174

Technical specifications

Analog inputs

4 individually configurable voltage/current inputs; 16-bit including sign; SAR ADC; multiplex sampling

Nominal ranges

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

Technical ranges

Voltage −10.73…+10.73 V; current −21.47…+21.47 mA; default extended range 107% per manual

Measurement uncertainty

< ±0.3% relative to full scale

Timing

Minimum EtherCAT cycle time 200 µs; not an ADC conversion-time specification

Ground and isolation

Voltage inputs differential; current inputs single-ended. 500 V isolation between E-bus and fieldbus voltage; no channel/channel isolation claim

Common-mode voltage

Maximum 35 V for voltage measurement

E-bus consumption

Typically 180 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