Description
- Model: ABB PM891 3BSE053240R1
- Brand: ABB
- Series: AC800M Controller Series
- Core Function: High-performance redundant process control CPU
- Type: Controller Module (CPU)
- Key Specs: 450 MHz processor Redundancy support Dual Ethernet ports
ABB PM891 3BSE053240R1
Key Technical Specifications
- Processor Frequency: 450 MHz
- Program Memory: 64 MB
- Data Memory: 32 MB
- Input Voltage: 24 V DC (±10%)
- Power Consumption: Approx. 7 W
- Redundancy Support: Yes (CPU redundancy configuration)
- Communication Ports: 2 × RJ45 Ethernet (100Base-TX)
- Supported Protocols: Modbus TCP, IEC 61850 (via communication module)
- Operating Temperature: 0°C to +55°C
- Mounting Method: AC800M rack slot installation
- Certifications: CE, UL
ABB PM891 3BSE053240R1
Frequently Asked Questions (FAQ)
Q1: Is the PM891 officially discontinued?
Yes. It is no longer actively produced. Market inventory is still available, but lead time from secondary channels is increasing. For critical installations, I recommend keeping 1–2 units on-site as insurance.
Q2: Is this unit refurbished?
No. It is Brand New Surplus sourced from authorized distribution channels. We do not sell used or refurbished equipment. Serial numbers and inspection reports are available upon request.
Q3: Does it support hot swap?
No. CPU replacement requires full power shutdown. If zero downtime is required, configure CPU redundancy.
Q4: Can it directly replace PM866?
No. Although both belong to AC800M, they are not directly interchangeable. Application recompilation may be required when migrating between models.
