The ABB SM560-S-FD-4 (part number 1SAP286100R0001) is a high-integrity Safety CPU Module belonging to the AC500-S safety PLC family. This module is designed to handle safety-critical applications up to SIL3 (IEC 61508) and PLe (ISO 13849-1), providing a dedicated “Security/Safety” processor that works in tandem with a standard AC500 non-safety CPU.

Technical Functionality

The SM560-S-FD-4 acts as the safety master, executing safety-specific logic programmed in Safety PLCopen blocks. The “FD-4” designation refers to the integrated F-Device (Fail-safe Device) functionality with up to 4 instances, allowing the module to communicate safety data via PROFINET/PROFIsafe. It effectively monitors safety I/O and ensures the system reaches a “safe state” upon detecting a fault, independent of the standard process control.

 

Key Specifications

 

Operational Precautions

• Coupler Bus Connection: The SM560-S-FD-4 is a plug-in module for the Terminal Base. Ensure it is seated on the left side of the standard CPU. Bent pins on the internal bus connector can lead to “Safety CPU Timeout” errors.
• Firmware Matching: The firmware version of the SM560-S must be compatible with the Automation Builder version used. Incompatible safety libraries can prevent the project from compiling or downloading.
• Safety Password: Access to the safety logic is protected by a unique safety password. Ensure this is documented in the site safety manual; if lost, the safety program cannot be modified or uploaded, requiring a factory reset of the module.
• Non-Safety Interference: While the SM560-S interacts with the standard CPU for data exchange, it is logically isolated. A crash in the standard PLC will not prevent the SM560-S from executing its fail-safe routine.

 

Common Questions Q&A

Q: Can this module run as a standalone PLC without a standard CPU? A: No. The SM560-S requires a “non-safety” AC500 CPU (the “Host”) to manage the terminal base and basic system power/communication tasks.

Q: What is the “FD-4” feature used for? A: It allows the SM560-S to act as a PROFIsafe device (F-Device) to up to 4 different PROFIsafe masters, enabling complex distributed safety architectures across multiple PLC systems.

 

Recommended Similar Models

1. SM560-S: The standard safety CPU without the extended F-Device (FD) capabilities.
2. DI581-S: A dedicated 16-channel safety digital input module used with this CPU.
3. DX581-S: A safety digital I/O module (8 inputs, 8 outputs) for localized safety control.
4. PM591-2ETH: A high-performance standard CPU often paired with the SM560-S for large systems.
5. TU582-S: The specialized safety terminal base required for mounting safety I/O modules.

Detailed technical documentation and current stock for the ABB 1SAP286100R0001 are maintained within our industrial safety PLC inventory.