ABB SM811 Safety CPU Module
$258.00
$520.00
Description
Product Description
The SM811 by ABB is a high-performance safety CPU module engineered for System 800xA and AC 800M controllers. It provides intelligent supervision of the PM865 controller in SIL1–2 operations and forms a 1oo2 diverse architecture when paired with PM865 for SIL3 compliance. Its compact design and advanced features enable reliable operation in safety-critical industrial environments, supporting redundancy, hot-insert, and online upgrades with minimal downtime.
Technical Specifications
| Attribute | Specification |
|---|---|
| Processor | MPC862P microprocessor, 96 MHz |
| Memory | 32 MB RAM |
| Safety I/O | 3 digital inputs, 2 digital outputs (safety-related only) |
| Synchronization | Dedicated link for active/redundant module sync; supports hot-insert and online upgrades |
| Voltage Monitoring | Over-voltage protection and internal voltage supervision |
| Communication | RS-485, Modbus RTU |
| Power Supply | 24 V DC ±10% |
| Power Consumption | 5 W typical, 7 W maximum |
| Digital Input Response Time | ≤10 ms |
| Isolation Voltage | 1500 V AC (input to output) |
| Operating Temperature | -25 °C to +70 °C |
| Storage Temperature | -40 °C to +85 °C |
| Humidity | 5%–95% non-condensing |
| Dimensions | 110 × 75 × 35 mm |
| Weight | 0.25 kg |
Key Features
-
Supervises PM865 controllers in SIL1–2 safety operations.
-
Enables 1oo2 diverse architecture for SIL3 systems.
-
Supports hot-insert and online upgrades for uninterrupted operation.
-
Integrated voltage monitoring enhances system reliability.
-
Compact, low-power design suitable for dense control cabinets.
-
Safety-related digital I/O ensures fault-tolerant operation (not for process I/O).
Applications
The SM811 is ideal for industrial plants, process automation systems, and safety-critical applications requiring high-availability architectures, such as chemical processing, oil & gas, and power generation. It integrates seamlessly into System 800xA environments for enhanced safety supervision.
FAQ
Q: Can SM811 operate independently without PM865?
A: No, the SM811 is designed to supervise PM865 controllers and form SIL architectures; it does not perform standard process control alone.
Q: Does it support online firmware upgrades?
A: Yes, the module supports hot-insert and online firmware updates, minimizing downtime.
Q: What safety integrity levels are supported?
A: SIL1–2 for standalone supervision; SIL3 when paired in a 1oo2 diverse architecture with PM865.
Q: Are the I/O channels usable for process signals?
A: No, all digital inputs and outputs are strictly safety-related.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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