PM591-2ETH 1SAP150100R0277 | ABB | AC500 PLC Processor Module

Product Overview

The ABB PM591-2ETH (1SAP150100R0277) operates as a high-tier central processing unit within the modular AC500 PLC ecosystem. Engineered for data-intensive and time-critical automation, this processor delivers a massive 4MB user program memory and a lightning-fast instruction execution time of 0.002 µs. It integrates dual Ethernet interfaces and a configurable RS232/485 serial port to serve as a high-performance communication hub for complex, decentralized control architectures. We supply this unit as 100% Brand New and Original, ensuring your industrial infrastructure maintains peak deterministic performance with factory-certified hardware.

Technical Specifications

The PM591-2ETH manages high-level automation tasks through the following technical parameters:

• Processor Type: AC500 High-Performance CPU

• User Program Memory: 4096 kB (4 MB)

• Total Memory Size: 9728 kB (including User Data RAM)

• Controller Processing Time: 0.000002 ms (0.002 µs) per instruction

• Communication Interfaces: 2x Industrial Ethernet (RJ45), 1x RS232/485 (Configurable)

• Display: Integrated Monochrome LCD for local status and diagnostics

• Rated Voltage: 24 V DC (Range: 20.4 – 28.8 V DC)

• Protection Rating: IP20

• Net Dimensions: 67.5 mm (W) x 76 mm (H) x 62 mm (D)

• Net Weight: 0.137 kg

Engineering Advantages

• Unrivaled Deterministic Execution: An execution speed of 0.002 µs per instruction allows the CPU to calculate complex floating-point algorithms and synchronize multi-axis motion with zero lag. This performance optimizes stability in high-throughput packaging, turbine control, and precision manufacturing.

• Dual-Port Network Segmentation: Two independent Ethernet ports allow the separation of mission-critical I/O traffic from high-level SCADA or ERP communication. This physical isolation prevents network congestion and strengthens the cybersecurity posture of the control cabinet.

• Extensive Data Storage: The 9.7MB total memory capacity eliminates the need for external memory hardware when managing massive data logs, sophisticated recipe libraries, or complex user-defined function blocks.

• Simplified Field Monitoring: The integrated LCD screen displays real-time error codes, system status, and firmware versions directly at the mounting rail. Maintenance technicians identify hardware faults or communication errors instantly without connecting a laptop.

• Space-Efficient Modular Footprint: The slim 67.5 mm width maximizes DIN rail density. The module docks into a standard AC500 Terminal Base, which ensures field wiring remains undisturbed during hardware upgrades or maintenance cycles.

FAQs

• Does the PM591-2ETH require a specific Terminal Base for installation?

  Yes. You must mount the PM591-2ETH on a compatible ABB AC500 Terminal Base (such as the TB5xx series). The base provides the mechanical rail interface and the electrical terminals for the 24V DC power supply.

• Can the two Ethernet ports run different industrial protocols?

  Yes. You can configure each port independently in the ABB Automation Builder software. This allows you to run Modbus TCP on one port for HMI communication while utilizing the second port for high-speed I/O scanning or peer-to-peer CPU data exchange.

• How do the serial interfaces handle legacy equipment?

  The RS232/485 port is fully software-configurable. It allows the CPU to bridge modern Ethernet-based networks with legacy instruments, barcode readers, or frequency drives using Modbus RTU or ASCII protocols.

• What is the benefit of the RAM-based user data memory?

  The high-capacity RAM ensures rapid read/write cycles for dynamic process variables. This is essential for applications requiring frequent data updates and high-speed logging without the wear-out limitations of traditional flash memory.