6ES7288-1SR40-0AA0 Siemens SIMATIC S7-200 SMART CPU

Product Description

The Siemens 6ES7288-1SR40-0AA0 is a SIMATIC S7-200 SMART CPU SR40 AC/DC/Relay designed for PLC control tasks requiring integrated digital inputs and relay outputs. It provides 24 digital inputs for 24 V DC signals and 16 relay outputs rated at 2 A. The CPU operates from an AC supply and supports STEP 7 Micro/WIN SMART programming, with 40 KB of program/data memory specified for the product.

Hardware Specifications

Digital I/O Configuration

The CPU integrates 24 digital inputs and 16 relay outputs. The inputs accept 24 V DC signals, while the relay outputs switch external circuits through electromechanical contacts. The 2 A output rating is a key selection parameter; verify the applicable load type, switching conditions, and output circuit requirements before connecting field devices.

Power Supply and Electrical Limits

The CPU accepts an AC supply from 85 to 264 V AC at 47-63 Hz, covering nominal 120 V AC and 230 V AC supplies. Its specified inrush current reaches 16.3 A at 264 V AC, which should be considered when selecting upstream protective devices and evaluating power-on conditions.

The integrated 24 V DC sensor power output supports loads up to 300 mA. The backplane bus supply provides up to 1.4 A at 5 V DC for the EM bus. These outputs have separate stated functions and should not be treated as interchangeable power sources.

Memory and Programming

The CPU uses STEP 7 Micro/WIN SMART for PLC programming. The specifications list 24 KB of program memory, 16 KB of user data memory, and 40 KB of program/data memory in the product designation. These figures describe different memory entries in the available specifications and should not be assumed to represent a single additive memory pool.

Flash memory and RAM are provided. An optional microSDHC card is supported for applications requiring removable memory, subject to the applicable CPU and card requirements.

Installation and Power Dissipation

The CPU supports standard DIN rail mounting and measures 125 x 100 x 81 mm. Allow sufficient panel space for the unit and its wiring, and account for the maximum specified power dissipation of 23 W when evaluating the control cabinet's thermal conditions.

Frequently Asked Questions

Q: What are the integrated I/O points on the 6ES7288-1SR40-0AA0?

A: The CPU provides 24 digital inputs rated for 24 V DC signals and 16 relay outputs rated at 2 A. Confirm the load characteristics and external circuit requirements before using the relay outputs.

Q: What power supply does this CPU require?

A: It accepts 85-264 V AC at 47-63 Hz, including nominal 120 V AC and 230 V AC supplies. Check the actual supply voltage and account for the specified inrush current when selecting upstream protection.

Q: Which software is used to program this CPU?

A: The designated programming package is STEP 7 Micro/WIN SMART. The product specifications also identify optional microSDHC card support; verify the required card and intended use against the applicable CPU documentation.

Other Attributes

• Country of Origin:  Germany
• Lead Time: In Stock, 2 Working Days

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