Schneider BMEH584040S M580 Safety CPU
The BMEH584040S is a SIL3-certified redundant Hot Standby safety processor for Modicon M580. It combines safety control and process control on one platform with embedded cybersecurity and native Ethernet.
Schneider BMEH586040S Modicon M580 Safety CPU
Product Introduction
The BMEH586040S represents the highest performance tier within the Schneider Electric Modicon M580 safety processor lineup. Specifically, this Level 6 module achieves SIL3 certification under IEC 61508 and IEC 61511 standards. It is designed for large-scale process control and safety applications requiring maximum availability. As a result, engineers can integrate safety and standard control into a single redundant architecture. This approach reduces hardware footprint and simplifies system maintenance. Furthermore, the BMEH586040S suits industries such as oil and gas, power generation, and chemical processing. Its Hot Standby design ensures continuous operation even during processor faults.
Technical Specifications
Processing and Memory Architecture
The processor uses an ARM dual-core architecture running at 600 MHz. For program storage, it provides 64 MB of integrated RAM, which is four times the capacity of Level 4 models. Data memory reaches 1 MB for process and safety variables. A 4 GB flash expansion slot accepts an optional SD card for extended storage. Execution speed handles complex Boolean and arithmetic instructions efficiently. The dual-core design separates safety and process execution paths for reliability.
I/O Capacity and Backplane Support
This CPU manages up to 31 remote I/O racks using X80 or Quantum I/O platforms. It also supports 61 distributed devices over the Ethernet device network. The module occupies 2 slots on an X80 Ethernet backplane. Compatible rack sizes include 4, 6, 8, and 12 slots. Additionally, it handles up to 128 PROFIsafe devices over PROFINET. This capacity makes the module suitable for large, distributed safety systems.
Communication Interfaces
Three Ethernet ports are built into the module. Two ports serve RIO and DIO networks using Modbus TCP/IP and EtherNet/IP protocols. One dedicated port manages Hot Standby synchronization between paired processors. A separate RJ45 service port and USB Mini-B port support local programming and diagnostics. The CPU also supports PROFIsafe over PROFINET for safety device integration. X80 communication modules can extend network capabilities further.
Mechanical and Environmental Parameters
The physical dimensions measure 100 × 56 × 93 mm (H × W × D). Power consumption is rated at 8.6 W with a bus current draw of 360 mA at 24 V DC. The operating temperature range spans 0°C to +60°C, while storage tolerates -25°C to +70°C. Relative humidity should remain between 5% and 95% without condensation. The module carries an IP20 protection rating and features conformal coating for harsh environments. Vibration resistance is rated at 3 gn and shock resistance at 15 gn.
Installation Guide
Step 1: Prepare the Rack
First, verify that all power sources are disconnected before beginning installation. Confirm that the X80 Ethernet backplane is properly mounted. Remove the protective covers from the target slot connectors.
Step 2: Position the Module
Next, align the positioning pins on the rear of the BMEH586040S with the corresponding holes on slots 00 and 01. Tilt the module slightly toward the top of the rack during insertion.
Step 3: Secure the Module
Once positioned, press the module firmly into the backplane connector. Tighten the two screws located at the top of the CPU. The recommended torque ranges from 0.4 to 1.5 N·m.
Step 4: Verify Connections
Finally, connect the Ethernet cables to the designated RIO, DIO, and Hot Standby ports. Confirm that any optional SD card is properly seated and the access door is closed before applying power.
Packaging List
1 × Schneider BMEH586040S Modicon M580 Safety CPU Module
1 × Protective connector cover set
1 × Quick start documentation (installation instructions)
Shipping via FedEx, UPS, or DHL.
FAQ
Q: How does the BMEH586040S differ from the Level 4 BMEH584040S?
A: The BMEH586040S offers 64 MB program memory and supports 31 remote I/O racks. The Level 4 model provides 16 MB memory and 16 racks. Therefore, the Level 6 version suits larger, more complex safety applications.
Q: Can the BMEH586040S operate as a standalone unit?
A: Yes, the module supports both standalone and Hot Standby configurations. In standalone mode, it functions as a safety processor without redundancy. For high-availability applications, two BMEH586040S modules pair together in a Hot Standby architecture.
Q: Which programming software is required?
A: Programming uses EcoStruxure Control Expert, formerly known as Unity Pro XL. This software handles both process control logic and safety application development within one environment.
Q: How many PROFIsafe devices can this CPU manage?
A: The processor supports up to 128 PROFIsafe devices over PROFINET. This capacity enables large distributed safety networks within a single controller architecture.
Q: What makes this module suitable for safety-critical applications?
A: The BMEH586040S features dual execution architecture with independent safety and process cores. It includes embedded cybersecurity functions such as IPSec, firewall, and Achilles Level 2 certification. These features protect against both operational failures and network-based threats.
