Executes compact sequence and interlock logic with fixed onboard digital I/O.
Key Information
6ES7288-1CR40-0AA1 is the Siemens SIMATIC S7-200 SMART CPU CR40s AC/DC/Relay execution with 24 integrated digital inputs and 16 integrated relay outputs.
Siemens specifies 12 KB program memory, 8 KB user-data memory and 2 KB retentive memory for the CR40s. The compact execution does not support signal-board or expansion-module additions.
The complete 0AA1 ordering identity, project backup, terminal map and load-protection design should travel together during replacement.
Functions
Switches field loads through the integrated relay-output execution.
Provides an onboard 24 V sensor supply within the published current limit.
Keeps the CR40s project and 0AA1 hardware identity together for controlled service work.
Specifications
ManufacturerSiemens
Exact model6ES7288-1CR40-0AA1
Product designationSIMATIC S7-200 SMART CPU CR40s
Power / I/O executionAC / 24 VDC inputs / relay outputs
Integrated digital inputs24
Integrated relay outputs16
Program memory12 KB
User-data memory8 KB
Retentive memory2 KB
Process image256 input bits and 256 output bits
Signal-board supportNot supported
Expansion-module supportNot supported
24 V sensor supply300 mA maximum
Power dissipation8 W
Installation
- Isolate the AC supply and every externally powered output circuit before wiring changes.
- Export the STEP 7 Micro/WIN SMART project and photograph all terminal groups and protective devices.
- Check relay-load voltage, inrush current, suppression and branch protection against the approved design.
- Restore the verified project, then test inputs, outputs, communications, interlocks and safe restart behavior.
Lifecycle
- Retain the complete 0AA1 label with the project archive and terminal schedule.
- Track relay switching duty and inspect high-inrush load circuits during planned maintenance.
- Keep a verified software and recovery copy outside the machine.
- Review Siemens compatibility information before selecting any different CPU execution.
About IndustryParts
https://www.industryparts.com/Fixed I/O and project identity stay together
IndustryParts handles 6ES7288-1CR40-0AA1 with its complete label, backed-up project and relay-load record.
- 0AA1 suffix preserved
- Project archive requested
- Relay-load evidence reviewed
Related Models
FAQ
Can expansion modules be added to 6ES7288-1CR40-0AA1?
No. Siemens identifies the CR40s as a compact execution without expansion-module or signal-board support.
What should accompany a 6ES7288-1CR40-0AA1 spare enquiry?
Provide the complete CPU label, project-software release, project backup, terminal photographs, connected-load list, quantity and destination.
Can an SR or ST CPU replace 6ES7288-1CR40-0AA1 directly?
Not automatically. Power supply, output technology, I/O count, wiring, enclosure space and project compatibility must all be reviewed.
What relay-load record matters before exchanging 6ES7288-1CR40-0AA1?
Record each load voltage, steady and inrush current, suppression device and protective circuit rather than relying on output count alone.
What proves 6ES7288-1CR40-0AA1 is ready after replacement?
Confirm the exact 0AA1 identity, correct project, stable diagnostics, complete I/O test and approved machine safety and restart checks.
