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Siemens SIMATIC S7-400 SM 421 Digital Input Module - 32 DI, 120V DC/AC

Name: Siemens 6ES7421-1EL00-0AA0
Brand: Siemens
SKU: 6ES7421-1EL00-0AA0
Availability: InStock

Siemens S7-400 SM 421 digital input module, 32 DI, 120V DC/AC.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

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ManufacturerSiemens

Part number6ES7421-1EL00-0AA0

Inputs 32 DI

Voltage 120V DC/AC

Isolation Optical

Series SIMATIC S7-400 SM 421

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12-month warranty

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32 Digital Inputs 120V AC/DC Operation Optical Isolation Versatile Voltage Handling S7-400 Integration

Product description

The Siemens SIMATIC S7-400 SM 421 module (6ES7421-1EL00-0AA0) is designed for 32 digital inputs operating at 120V DC or AC. This module provides optically isolated inputs, making it suitable for interfacing with a variety of industrial control voltages.

This input module is commonly used in applications requiring monitoring of higher voltage AC or DC signals, such as those found in power distribution, heavy machinery, or older control systems. Its versatility in handling both AC and DC at 120V makes it a flexible choice.

Stanlo Automation, a veteran-owned surplus distributor, offers this Siemens 6ES7421-1EL00-0AA0 module. We ensure you have access to reliable surplus automation components to meet your project timelines and budgets.

Technical specifications

Inputs	32 DI
Voltage	120V DC/AC
Isolation	Optical
Series	SIMATIC S7-400 SM 421

Common applications

Industrial Automation

High Voltage Monitoring

PLC Input Modules

Process Control

Machine Safety

Compatible systems

SIMATIC S7-400 PLC Systems

Also known as

Siemens S7-400 120V Input SM 421 32-Channel AC/DC 6ES74211EL000AA0

Replaces / compatible with

This module can serve as a replacement for Siemens S7-400 digital input modules requiring 120V AC or DC compatibility. It integrates into the S7-400 system architecture.

Technical note

Expert tip

When using the 6ES7421-1EL00-0AA0 for AC inputs, ensure the frequency is within the specified operational range for optimal performance.

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Frequently asked questions

Can the Siemens 6ES7421-1EL00-0AA0 module handle both AC and DC inputs at 120V?

Yes, the Siemens 6ES7421-1EL00-0AA0 SM 421 module is designed to accept 32 digital inputs that can be either 120V AC or 120V DC. This offers flexibility for various industrial signal sources.