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Siemens SIMATIC S7-300 16-Channel High Voltage DC Input Module

Siemens SIMATIC S7-300 16-Channel 48-125V DC Digital Input Module.

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ManufacturerSiemens

Part number6ES7321-1CH20-0AA0

Module Type Digital Input SM 321

Channels 16 DI

Voltage 48-125V DC

Isolation Isolated

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16 isolated digital inputs 48-125V DC operation High voltage capability SIMATIC S7-300 compatible Robust isolation

Product description

The Siemens 6ES7321-1CH20-0AA0 is a SIMATIC S7-300 series digital input module equipped with 16 isolated digital inputs. This module is specifically designed for higher DC voltage applications, operating within the range of 48V to 125V DC, and connects via a 20-pole connector.

This module is ideal for industrial settings requiring the detection of higher DC voltage signals, such as in power distribution, heavy machinery, or specialized control systems. Its robust isolation ensures reliable performance and protects the PLC from high voltage transients.

Stanlo Automation, a veteran-owned company, offers a wide selection of surplus industrial automation components. We are dedicated to providing quality parts at competitive prices, ensuring your automation systems remain operational and efficient.

Technical specifications

Module Type	Digital Input SM 321
Channels	16 DI
Voltage	48-125V DC
Isolation	Isolated
Connector	1x 20-pole
Series	SIMATIC S7-300

Common applications

Power distribution

Heavy machinery control

Industrial automation

High voltage monitoring

Process control

Compatible systems

SIMATIC S7-300 PLC Systems

Also known as

Siemens S7-300 High Voltage DI SM 321 16 DI 125V DC 6ES73211CH200AA0

Replaces / compatible with

This module is part of the Siemens SIMATIC S7-300 family, providing high-voltage DC input capabilities. It is designed to integrate seamlessly with S7-300 CPUs.

Technical note

Expert tip

Proper wiring practices are essential for high-voltage DC applications; always ensure correct polarity and secure connections for the 20-pole connector.

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Frequently asked questions

What is the maximum DC voltage the Siemens 6ES7321-1CH20-0AA0 module can handle?

The Siemens 6ES7321-1CH20-0AA0 digital input module is designed to handle DC voltages ranging from 48V to 125V. It features 16 isolated inputs for safe and reliable operation in high-voltage applications.