Siemens 6ES7334-0KE00-0AB0 Analog IO Module For S7-300

Siemens 6ES7334-0KE00-0AB0 is a SIMATIC S7-300 analog module (SM 334) that provides four analog inputs and two analog outputs with 12-bit resolution, designed for galvanic isolation between the inputs, outputs, and the backplane bus. The module is intended for use in S7-300 backplane systems to acquire sensor data and drive actuators with independent, isolated channels, enhancing signal integrity in industrial environments. It supports mixed- signal operation with voltage measurements in the 0–10 V range and resistance/RTD sensing (notably Pt100 sensors with a 10 kΩ range), using a dedicated current source for resistive measurements and allowing a maximum input voltage of 20 V, with a destruction threshold up to 75 V for 1 s under a 1:20 duty cycle. The SM 334 draws nominal power from a 24 V DC supply, with up to 80 mA on the L+ line and up to 60 mA for the backplane bus, and typical dissipation around 2 W. A single 20‑pole front connector front-ends the unit for plug-in/removal with the backplane, making it suitable for compact, modular control architectures that require both precision analog inputs and auxiliary analog outputs.