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Siemens SIMATIC S7-400 SM 421 Digital Input Module - 16 DI, 24-60V, Alarm

Name: Siemens 6ES7421-7DH00-0AB0
Brand: Siemens
SKU: 6ES7421-7DH00-0AB0
Availability: InStock

Siemens S7-400 SM 421 digital input module, 16 DI, 24-60V, with alarm/diagnostics.

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ManufacturerSiemens

Part number6ES7421-7DH00-0AB0

Inputs 16 DI

Voltage 24-60V DC

Functions Alarm, Diagnostics

Isolation Optical

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16 Digital Inputs 24-60V DC Operation Universal DC Voltage Range Alarm Capabilities Diagnostic Functions Optical Isolation

Product description

The Siemens SIMATIC S7-400 SM 421 module (6ES7421-7DH00-0AB0) provides 16 optically isolated digital inputs for a universal voltage range of 24-60V. It features integrated alarm and diagnostics functions for enhanced system monitoring and fault detection.

This module is ideal for applications requiring flexibility in DC input voltage, typically found in systems utilizing various control voltages within the 24-60V range. It's well-suited for industrial automation, process control, and machinery where consistent and reliable signal input is needed.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 6ES7421-7DH00-0AB0. We are dedicated to providing quality surplus automation components to ensure your operational continuity.

Technical specifications

Inputs	16 DI
Voltage	24-60V DC
Functions	Alarm, Diagnostics
Isolation	Optical
Series	SIMATIC S7-400 SM 421

Common applications

Industrial Automation

Process Control

PLC Input Modules

Machinery Control

DC Signal Monitoring

Compatible systems

SIMATIC S7-400 PLC Systems

Also known as

Siemens S7-400 Universal DC Input SM 421 16DI 24-60V 6ES74217DH000AB0

Replaces / compatible with

This module can replace Siemens S7-400 digital input modules with a 24-60V DC input range and alarm/diagnostic capabilities. It is designed for integration with the S7-400 PLC system.

Technical note

Expert tip

The 24-60V DC input range of the 6ES7421-7DH00-0AB0 provides flexibility for systems using nominal 24V, 48V, or 60V DC control power.

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Frequently asked questions

What makes the voltage range of the Siemens 6ES7421-7DH00-0AB0 suitable for various applications?

The 24-60V DC universal voltage range of the Siemens 6ES7421-7DH00-0AB0 allows it to interface with a wider variety of DC control signals commonly found in industrial settings, reducing the need for multiple specialized modules.