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Siemens SIMATIC C7-621 Compact Unit - CPU, OP3, I/O

Name: Siemens 6ES7621-1AD00-0AE3
Brand: Siemens
SKU: 6ES7621-1AD00-0AE3
Availability: InStock

Siemens SIMATIC C7-621 Compact Unit

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

In Stock — Ready to Ship

ManufacturerSiemens

Part number6ES7621-1AD00-0AE3

CPU S7-300

Operator Panel OP3

Interface Module IM621

Digital Inputs 16

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Integrated S7-300 CPU Built-in OP3 Operator Panel 16 Digital Inputs/Outputs 4 Analog Inputs, 1 Analog Output Compact Design All-in-One Solution

Product description

The Siemens 6ES7621-1AD00-0AE3 is a SIMATIC C7-621 compact unit, an integrated automation solution combining an S7-300 CPU with an OP3 operator panel and an IM621 interface module. It features 16 digital inputs, 16 digital outputs, 4 analog inputs, and 1 analog output, providing a comprehensive platform for control tasks.

This integrated unit is ideal for smaller to medium-sized automation projects where a compact and self-contained controller is required. It is used in various industries, including machine building, automation solutions, and process control, where space and integration efficiency are key.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 6ES7621-1AD00-0AE3. We are dedicated to providing essential industrial automation components with reliable service and timely delivery.

Technical specifications

CPU	S7-300
Operator Panel	OP3
Interface Module	IM621
Digital Inputs	16
Digital Outputs	16
Analog Inputs	4
Analog Outputs	1
Integrated Solution	Yes
Manufacturer	Siemens

Common applications

Machine Control

Small Automation Projects

Process Automation

Control Panels

Embedded Systems

Industrial Automation

Compatible systems

Designed for standalone operation or integration into larger SIMATIC S7-300 automation systems.

Also known as

Siemens SIMATIC C7-621 C7-621 PLC HMI Siemens Integrated Controller 6ES7621-1AD00-0AE3

Replaces / compatible with

The SIMATIC C7-621 series is largely discontinued by the manufacturer. For replacements, consider modern SIMATIC S7-1200 or S7-1500 controllers with separate HMI panels.

Technical note

Expert tip

As this unit integrates CPU and HMI, firmware updates or system modifications require careful planning to avoid operational disruption.

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Frequently asked questions

What integrated components are included in the Siemens 6ES7718-1BB01-1BC2 Field PG M6?

The Siemens 6ES7621-1AD00-0AE3 SIMATIC C7-621 is a compact unit that integrates an S7-300 CPU, an OP3 operator panel, and an IM621 interface module, along with digital and analog I/O capabilities.