Type:Digital Input
Number of Inputs:8
Operating Voltage:24 V DC
Current Rating:50 mA per channel
Isolation Rating:1500 Vrms
Operating Temperature:-25°C to +60°C
Storage Temperature:-40°C to +85°C
Dimensions (WxHxD):91mm x 121mm x 68mm
Weight:0.226kg
This Siemens module stands out with its advanced optical isolation technology, ensuring reliable signal transmission even in harsh industrial environments. It’s designed to provide seamless integration with S7-21X CPUs, enhancing system efficiency and reliability.
The 8 digital inputs are equipped to handle diverse industrial signals, from machine status monitoring to control commands, making it versatile for various automation tasks. Its 24V DC operation ensures compatibility with a wide range of industrial power supplies.
Optical isolation prevents electrical interference and ensures safety by preventing ground loops, which can lead to system malfunctions. This feature is particularly valuable in applications where high reliability and safety standards are required.
With its compact size and lightweight design, this module is easy to install and integrate into existing control systems without significantly increasing the overall system footprint or weight. It’s an ideal solution for space-constrained industrial automation setups.
Despite being discontinued, the Siemens SIMATIC S7-200 Digital Input Module EM 221 continues to offer a legacy of robust performance and reliability. For users seeking to maintain their existing infrastructure, this module provides a cost-effective and efficient upgrade option.
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