Product Overview

SIMATIC S7-200 Digital Input Module EM 221 - A discontinued spare part digital input module designed for legacy SIMATIC S7-200 controller systems. This optically isolated 8-channel digital input module provides reliable 120/230V AC signal processing for industrial automation applications requiring AC input signal monitoring.

Important Note: This product has been cancelled since January 18, 2022, and is available only as a spare part for existing installations.

Key Features

8 Digital Inputs - Provides 8 independent digital input channels for comprehensive signal monitoring

Dual Voltage Operation - Supports both 120V AC and 230V AC input voltages for flexible application use

Optical Isolation - Features complete optical isolation between input circuits and internal logic for enhanced safety and noise immunity

Legacy S7-200 Compatibility - Designed specifically for SIMATIC S7-200 controller systems to expand I/O capabilities

Compact Design - Space-efficient module design optimized for DIN rail mounting in industrial environments

Technical Specifications

Input Voltage: 120/230V AC
Input Type: Optically isolated digital inputs
Number of Inputs: 8
Input Current: Standard AC input characteristics
Isolation: Optical isolation between inputs and logic circuits
Mounting: DIN rail compatible
Dimensions: 87mm (H) x 98mm (W) x 70mm (D)
Net Weight: 0.183 kg
Country of Origin: China

Product Status

Product Lifecycle: PM410 - Product cancelled since January 18, 2022
Availability: Spare part only - for existing installations
Product Class: C - Manufactured to order, non-returnable

Compliance & Certifications

RoHS Compliance - Compliant with RoHS directive since March 31, 2008
Export Control: ECCN: N / AL: N
WEEE Compliance - Subject to take-back obligation under WEEE directive (2012/19/EU)

REACH Regulation Information

This product contains lead monoxide (lead oxide) in concentrations higher than 0.1% weight by weight (w/w). Based on current information, these substances do not pose risk when used as intended, including disposal. Please refer to product documentation for complete details.

Applications

Suitable for legacy industrial automation systems requiring AC digital input monitoring including:

• AC signal monitoring and detection
• Switch and sensor input processing
• Industrial control panel integration
• Process monitoring applications
• Legacy S7-200 system maintenance and repair

Compatibility

Designed exclusively for SIMATIC S7-200 controller systems. This module supplements the onboard I/O capabilities of S7-200 CPUs for flexible system adaptation and subsequent upgrading with additional inputs.

Support Information

As this is a discontinued spare part, technical support may be limited. For assistance with this product, please contact your local Siemens office or visit the Spares & Service section for more information.

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Product Information

Siemens Spares & Service

US Product Details