ABB PM866AK02 3BSE050198R1 Redundant Processor Unit | Replacement, Equivalent & Selection Guide
The ABB PM866AK02 (order code 3BSE050198R1) is a high-performance redundant processor unit designed for the ABB AC800M controller platform. It delivers deterministic real-time control with built-in redundancy support, making it the preferred choice for mission-critical process automation in oil & gas, power generation, and chemical industries. Konmask.com supplies genuine and compatible units with full traceability.
Technical Specifications
- Model: PM866AK02
- Order Code: 3BSE050198R1
- Brand: ABB
- Series: AC800M
- Type: Redundant Processor Unit (CPU)
- Processor: Dual-core, real-time deterministic
- Memory: Extended application & data memory
- Communication: Ethernet (CEX-Bus), ModuleBus
- Redundancy: Hot-standby CPU redundancy supported
- Operating Voltage: 24 V DC (via backplane)
- Operating Temperature: 0 °C to +55 °C
- Protection Class: IP20
- Weight: Approx. 1,100 g
- Certifications: CE, UL, cUL
- Firmware: Compatible with Control Builder M Professional
Compatible Replacement & Equivalent Models
The following models are functionally compatible or serve as direct/near-direct replacements for the PM866AK02 in AC800M systems:
- ABB PM866AK01 (3BSE050196R1) — Same series, non-redundant variant; suitable for non-critical loops
- ABB PM864AK01 (3BSE018161R1) — Previous-generation AC800M CPU; compatible with same I/O modules
- ABB PM864AK02 (3BSE018162R1) — Redundant variant of PM864; lower memory capacity
- ABB PM865AK01 (3BSE031151R1) — Mid-range AC800M processor; compatible backplane
- ABB PM865AK02 (3BSE031152R1) — Redundant mid-range processor; direct functional equivalent at lower spec
Note: Always verify firmware version compatibility and backplane slot requirements before substitution. Contact Konmask.com for a free compatibility check.
Why Choose the Original PM866AK02
- ✅ Full redundancy: Hot-standby switchover with zero process interruption
- ✅ Maximum memory: Largest application memory in the AC800M PM8xx family
- ✅ Proven reliability: Deployed in thousands of DCS/PLC installations worldwide
- ✅ Long lifecycle: ABB extended support and spare parts availability
- ✅ Seamless integration: Native compatibility with S800 I/O, PROFIBUS, FOUNDATION Fieldbus, and HART
Typical Applications
- Oil & gas upstream/downstream process control
- Power plant boiler and turbine control systems
- Chemical and petrochemical batch/continuous processes
- Water treatment and utility automation
- Pharmaceutical manufacturing (FDA 21 CFR Part 11 environments)
- Pulp & paper mill automation
System Compatibility
- Controller Platform: ABB AC800M (all variants)
- I/O Modules: S800 I/O series (AI810, AO810, DI810, DO810, etc.)
- Fieldbus: PROFIBUS DP/PA, FOUNDATION Fieldbus H1, HART, Modbus RTU/TCP
- Engineering Tool: ABB Control Builder M Professional v5.x and above
- Communication Modules: CI854, CI857, CI858, CI860, CI867, CI868
- Power Supply: SD821, SD822, SD823 (24 V DC)
Selection Guide
Use this guide to select the right AC800M processor for your application:
- Non-redundant, standard memory → PM866AK01 — suitable for standalone, non-critical control loops
- Redundant, standard memory → PM865AK02 — cost-effective redundancy for mid-scale systems
- Redundant, maximum memory → PM866AK02 ✔ — recommended for large, complex, safety-critical DCS applications
- Legacy replacement → PM864AK02 — drop-in for older AC800M installations with limited budget
Not sure which model fits your system? Contact our engineers for a free selection consultation.
Quality Assurance & Sourcing
- 🔍 Authenticity: All units sourced from authorized distributors or verified surplus channels
- 📦 Inspection: Full functional test and visual inspection before shipment
- 📄 Documentation: Certificate of conformity and test report available on request
- 🔒 Warranty: 12-month warranty against manufacturing defects
- 🚚 Lead Time: In-stock units ship within 1–3 business days; EXW Xiamen, China
How to Order
- Confirm your model number: PM866AK02 / 3BSE050198R1
- Specify quantity and required delivery date
- Request a quote via support@konmask.com or add to cart directly
- Receive proforma invoice with shipping options (DHL / FedEx / sea freight)
- Payment: T/T, PayPal, or trade assurance
Replacement & Compatibility FAQ
Q: Can PM865AK02 replace PM866AK02 directly?
A: Functionally yes for most applications, but PM865AK02 has less application memory. Verify your program size before substitution.
Q: Is PM866AK02 compatible with older AC800M racks?
A: Yes, it is backward compatible with all AC800M backplanes (TB820, TB840, TB842).
Q: Can I use PM866AK02 in a non-redundant configuration?
A: Yes. The AK02 suffix indicates redundancy-capable hardware, but it can operate in simplex mode.
Q: What is the difference between PM866AK01 and PM866AK02?
A: AK01 is the simplex (non-redundant) variant; AK02 supports hot-standby CPU redundancy.
Q: Do you provide firmware or software with the unit?
A: Hardware only. ABB Control Builder M software is licensed separately through ABB.
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