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The SLC284 is a high-integrity safety controller within the Bachmann M1 automation environment, designed to meet SIL3 and PL e safety standards. It operates as an independent safety processor, executing safety-related programs while maintaining high-speed synchronization with the standard...
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The SLC284 is a high-integrity safety controller within the Bachmann M1 automation environment, designed to meet SIL3 and PL e safety standards. It operates as an independent safety processor, executing safety-related programs while maintaining high-speed synchronization with the standard functional controller.
With internal 1-out-of-2 (1oo2) redundancy, the SLC284 ensures that any internal hardware failure or logical inconsistency triggers a safe system shutdown, making it ideal for critical industrial safety applications.
| Specification | Details |
|---|---|
| Model Identification | SLC284 |
| Safety Integrity Level | SIL 3 (IEC 61508 / IEC 62061) |
| Performance Level | PL e, Cat. 4 (EN ISO 13849-1) |
| Processor Architecture | Redundant diverse processors (1oo2 internal redundancy) |
| Memory | Retentive memory for safety variables and event logs |
| Cycle Time | Deterministic, fast safety reaction times |
| Programming | Bachmann Safety Editor (PLCopen Safety Function Blocks) |
| Interfaces | Integrated safety-bus communication for decentralized safety I/O |
| Diagnostics | Self-monitoring, hardware error detection |
| Operating Temperature | –30°C to +60°C |
Wind turbine emergency shutdown and blade pitch safety
Crane safety management (over-speed, collision prevention)
Complex production line safeguarding (light curtains, safe brakes, speed monitoring)
The SLC284 allows consolidation of functional control and safety logic in a single M1 rack, while maintaining strict isolation of safety functions from standard process logic to prevent interference.
Q: Can the SLC284 be programmed using standard C++ or IEC 61131-3?
A: No. Programming must be done via the Bachmann Safety Editor, ensuring deterministic execution and compliance with safety standards.
Q: How does the SLC284 communicate with remote safety I/O?
A: It uses safety-certified protocols (e.g., Safety over EtherCAT or Bachmann Safety Bus) to maintain data integrity between the controller and decentralized safety modules.
