

The ABB PM591-2ETH processor module is a core component of the AC500 platform, engineered for demanding distributed automation tasks. This unit combines a powerful CPU with 4 MB of memory and 9,728 kB of user data RAM, ensuring seamless execution of complex control logic. It provides two industrial Ethernet interfaces and one RS232/485 port, enabling reliable connectivity with field devices and higher-level systems. The integrated display allows operators to quickly access status information without additional tools. With a net weight of just 0.137 kg and compact dimensions of 76 mm x 67.5 mm x 62 mm, the PM591-2ETH fits easily into space-constrained panels. It operates on a 24 V DC supply with a wide tolerance range (20.4–28.8 V DC) and boasts an IP20 rating for safe use in industrial environments. This module is designed for high-speed processing, with a controller processing time of only 0.000002 ms, making it suitable for real-time applications. As a standard AC500 model, it supports up to 0 digital configurable I/Os directly but can be expanded via bus modules. The PM591-2ETH is classified under eClass 27-24-22-07 and ETIM EC000236, confirming its role as a PLC CPU module. It is available as a standard piece with a minimum order quantity of 1, and each unit is shipped in a carton with dimensions 84 mm x 72 mm x 71 mm.
| Attribute | Specification |
|---|---|
| Product Model | PM591-2ETH |
| Product Type | AC500 Processor Module |
| Function | Memory 4 MB; Interfaces: 2x Ethernet, RS232/485; Display |
| Memory Size | 9,728 kB (User Data RAM) |
| Number of Hardware Interfaces | Industrial Ethernet: 1; Other: 1; RS-232: 0; RS-485: 0 |
| Controller Processing Time | 0.000002 ms |
| Digital Configurable I/Os | 0 |
| Degree of Protection | IP20 |
| Rated Voltage (Ur) | 24 V DC |
| Supply Voltage Range | 20.4 … 28.8 V DC |
| Product Net Weight | 0.137 kg |
| Product Net Depth / Length | 62 mm |
| Product Net Height | 76 mm |
| Product Net Width | 67.5 mm |
| Gross Weight | 0.161 kg |
| Package Level 1 Dimensions (L x H x W) | 84 mm x 72 mm x 71 mm |
| Package Level 1 Units | 1 carton |
| Minimum Order Quantity | 1 piece |
| Order Multiple | 1 piece |
| Selling Unit of Measure | piece |
| Made To Order | No |
| Product Main Type | PM591 |
| Product Name | Distributed Automation PLCs |
| CN8 Code | 85389091 |
| eClass | 27-24-22-07 |
| ETIM 8 | EC000236 - PLC CPU-module |
| UNSPSC | 32151705 |
| SCIP | 33127340-6b39-44ac-a7c5-a3dcb2794d1b Germany (DE) |
| WEEE B2C / B2B | Business To Business |
| WEEE Category | 5. Small Equipment (No External Dimension More Than 50 cm) |

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