ABB PM591-ETH 1SAP150100R0270 | AC500 PLC Processor

Description

MBrand: ABB

• Full Model Number: PM591-ETH 1SAP150100R0270
• System/Series Family: ABB AC500 PLC
• One-Sentence Core Function: 4 MB AC500 processor module for PLC program execution, local I/O control, and Ethernet/serial communications
• Top 3 Hardcore Specs: 4 MB memory; 24 VDC supply; Ethernet + 2 x RS-232/485 + FBP interface
• Stock Status: New Surplus / Fully Tested Refurbished subject to actual inventory inspection
• Extended Product Type: PM591-ETH-V14x
• Product Weight: 0.155 kg
• Product Dimensions: 62 × 67.5 × 76 mm
• Environmental Range: 0 to +60 °C operating; -40 to +70 °C storage

Module 3: Commercial-Technical Deep Dive

A failed AC500 processor does not necessarily justify replacing the rack, I/O modules, or field wiring. The ABB PM591-ETH 1SAP150100R0270 is the PM591-ETH-V14x processor module for the AC500 PLC family, with a 4 MB controller memory configuration. ABB documentation identifies a 24 VDC controller, one Ethernet interface, two RS-232/485 interfaces, an FBP interface, SD-card slot, and LCD display. Its compact package measures approximately 62 × 67.5 × 76 mm and has a net weight of 0.155 kg.

The communication mix is the practical advantage for legacy control cabinets. Ethernet provides TCP/IP connectivity, while the two serial interfaces support RS-232/485 applications; the controller also supports FBP-based integration and a CS31 bus interface. ABB’s product documentation identifies this exact product ID as 1SAP150100R0270, and an ABB lifecycle statement classifies the PM591-ETH R0270 as a Classic product. That matters during migration planning: preserve the existing AC500 project, firmware environment, memory-card content, and communication parameters before replacing the CPU. A controller that powers up correctly can still fail to run the plant application because the stored project or firmware environment does not match.

ABB PM591-ETH 1SAP150100R0270

Module 4: Compatibility & Installation Traps

Migration/Compatibility

• Replacement status: ABB PM591-ETH-V14x, product ID 1SAP150100R0270.
• Logic rewrite: Normally not required for a like-for-like CPU replacement when the existing AC500 project and hardware configuration are retained.
• Firmware flash: Configuration dependent. Record the original firmware/software environment before downloading anything to the replacement.
• Drop-in status: Potentially direct for the same -V14x hardware configuration; verify the exact product ID before substitution.
• Memory: 4 MB controller memory configuration.
• Interfaces: Ethernet, 2 x RS-232/485, FBP, SD-card slot, LCD display.
• Variant warning: Do not substitute PM591-2ETH or merely because the model family is similar; these are different product configurations.

⚠️ Field Traps (Watch Out)

• Memory-card dependency: Before removing the original CPU, preserve the existing SD-card/project environment where used. Factory-default memory does not equal a commissioned controller.
• Serial-port assignment: The two RS-232/485 interfaces may be carrying separate functions such as programming, Modbus, or legacy equipment communication. Record port assignments before replacement.
• Ethernet configuration: IP settings, station parameters, and supervisory connections must be documented before the original CPU is removed.
• 24 VDC supply: Verify voltage and polarity before energizing the replacement. A controller can be damaged quickly by an incorrect DC supply connection.
• Firmware/project mismatch: Confirm the Automation Builder/ software environment before downloading the retained application.

Module 5: Quality Assurance SOP

Before shipment, the ABB 1SAP150100R0270 should pass a processor-specific inspection sequence:

1. OEM anti-counterfeit visual inspection — verify ABB markings, designation, product ID 1SAP150100R0270, V14x identification where present, display, connectors, and housing.
2. Part-number verification — photograph the complete nameplate and reconcile the exact R0270 suffix before release.
3. Mechanical inspection — inspect mounting features, Ethernet connector, RS-232/485 interfaces, FBP connector, SD-card slot, LCD, and enclosure for damage or contamination.
4. 24 VDC controlled power-up — energize through a current-limited laboratory supply and verify normal startup behavior.
5. Power-on self-test (POST) — confirm processor initialization, display operation, diagnostic indications, and absence of hardware faults.
6. Memory verification — confirm recognized controller memory and SD-card interface operation where applicable.
7. Ethernet handshake verification — establish a controlled TCP/IP connection and verify stable communication.
8. Serial communication verification — test representative RS-232/485 communication with a compatible device or simulator.
9. FBP/CS31 verification — where the test environment supports it, confirm expected fieldbus or local-I/O communication.
10. Application execution test — load a controlled project and verify PLC execution, I/O exchange, diagnostics, and communication behavior.
11. Final QC record — document exact product ID, firmware version, test project, interface results, photographs, and packaging condition.

For a PLC processor, POST alone is not enough. The useful acceptance points are application execution, memory integrity, Ethernet communication, serial-port operation, and I/O exchange.

Module 6: CRO-Driven Buyer FAQ

1. Is ABB 1SAP150100R0270 obsolete, and how do I verify authenticity?

ABB’s documentation identifies 1SAP150100R0270 as , with the designation and a 4 MB processor configuration. ABB’s lifecycle documentation classifies this part as Classic, making condition, firmware, and exact configuration important during sourcing. Verify the complete product ID on the physical label before purchasing.

2. Can I hot-swap the ?

Do not assume hot-swap capability. This is the main processor of an PLC. Shut down the controller, isolate the 24 VDC supply, follow site LOTO requirements, and use appropriate ESD protection before removal.

3. Will replacing the require rewriting the PLC program?

Normally not for a like-for-like replacement when the original project, controller configuration, communication parameters, and required memory-card content are retained. Verify firmware compatibility before restoring the application.

4. What communication interfaces does the provide?

ABB documents the as a 4 MB, 24 VDC processor with Ethernet, 2 x RS-232/485, FBP, SD-card slot, and LCD display. The product documentation also identifies CS31 bus capability and Ethernet TCP/IP connectivity.

5. What warranty and technical support are available?

Warranty duration should be stated according to the actual inventory condition, such as new surplus or tested refurbished. Technical support should cover exact product-ID verification, compatibility, firmware/project review, memory-card checks, Ethernet and serial communication testing, and documented bench-test results. Live PLC commissioning and production application changes remain the responsibility of qualified automation personnel.