ABB 1KHW002238R0001 N4BG / 1KHW002237R0001 OPIC1 R1A – Optical Interface Board | AC800M DCS Platform
Engineering Background
The ABB AC800M controller platform is the backbone of process automation in power generation, oil & gas, pulp & paper, and chemical industries worldwide. Reliable fiber-optic communication between controller modules and I/O clusters is critical to deterministic, noise-immune data exchange in these high-EMI environments.
Product Positioning
The 1KHW002238R0001 (N4BG) paired with the 1KHW002237R0001 (OPIC1 R1A) constitutes ABB’s dedicated optical interface board assembly for the AC800M series. It provides the physical-layer fiber-optic link between the controller backplane and remote I/O modules, replacing copper-based communication to eliminate ground loops and electromagnetic interference in demanding plant environments.
Complete Technical Specifications
- Manufacturer: ABB
- Part Numbers: 1KHW002238R0001 (N4BG) / 1KHW002237R0001 (OPIC1 R1A)
- Module Type: Optical Interface Board (OPIC1)
- Compatible Platform: ABB AC800M DCS / Advant Controller Series
- Communication Medium: Fiber-optic (plastic / glass fiber compatible)
- Interface Standard: Proprietary ABB optical bus protocol
- Mounting: Backplane-mounted, DIN-rail compatible chassis
- Operating Temperature: 0 °C to +55 °C
- Storage Temperature: −25 °C to +70 °C
- Relative Humidity: 5–95% RH, non-condensing
- Weight: 360 g
- Revision: R1A
- Firmware: Factory-loaded; field-upgradeable via ABB toolchain
- Certifications: CE, UL (per ABB platform certification)
Proven Application Environments
- Power plant distributed control systems (DCS) — turbine and boiler control loops
- Oil & gas upstream / downstream process automation
- Pulp & paper mill process control with high-EMI machinery
- Chemical and petrochemical batch and continuous process control
- Water treatment and municipal utility SCADA integration
- Long-distance I/O extension where copper signal integrity is compromised
Engineering Advantages
- EMI Immunity: Fiber-optic medium is inherently immune to electromagnetic and radio-frequency interference — ideal for high-voltage switchgear environments.
- Ground Loop Elimination: Optical isolation removes galvanic coupling between controller and remote I/O, preventing ground-loop-induced measurement errors.
- Extended Reach: Fiber links support longer cable runs than copper equivalents without signal degradation.
- Hot-Swap Compatibility: Designed for live insertion/removal within the AC800M chassis without system shutdown (verify with site safety procedures).
- Deterministic Latency: Optical bus protocol maintains consistent cycle times critical for closed-loop control.
- Dual-Part Assembly: N4BG carrier board + OPIC1 R1A transceiver module — modular design simplifies field replacement of the optical transceiver without replacing the full assembly.
System Architecture & Signal Flow
The N4BG (1KHW002238R0001) carrier board seats into the AC800M controller backplane slot and provides the electrical interface to the controller bus. The OPIC1 R1A (1KHW002237R0001) optical transceiver mounts onto the N4BG, converting electrical signals to optical pulses transmitted over fiber cables to remote I/O stations (e.g., S800 I/O clusters). Signal flow: Controller CPU → Backplane Bus → N4BG Carrier → OPIC1 Transceiver → Fiber Cable → Remote I/O Station. Return path is symmetric. The assembly supports the ABB optical bus topology (star or daisy-chain depending on system configuration).
Sourcing & Quality Verification
- Source: Decommissioned plant equipment, authorized surplus, and OEM-certified channels
- Inspection: Each unit undergoes visual inspection, connector integrity check, and functional power-on verification prior to shipment
- Condition: Tested used (refurbished) or new surplus — specified at time of order confirmation
- Packaging: Anti-static bag + foam-lined carton; humidity indicator card included
- Traceability: Serial number and revision documented; available on request
- Warranty: 12-month Konmask warranty covering functional defects
Procurement Process
- Submit your RFQ or place order directly on Konmask.com
- Receive order confirmation with unit condition, serial number, and lead time within 24 hours
- Payment via T/T, PayPal, or trade-term arrangements (FOB Xiamen)
- Shipment via DHL / FedEx / UPS with full tracking; export documentation (commercial invoice, packing list, CO) provided
- Post-delivery technical support available via email or WhatsApp
Technical FAQ
Q: Is this board compatible with AC800M PM851 / PM856 / PM860 controllers?
A: Yes. The OPIC1 optical interface board is compatible across the AC800M controller family. Confirm the specific slot assignment in your system’s hardware configuration.
Q: Can I replace only the OPIC1 R1A transceiver without replacing the N4BG carrier?
A: Yes. The modular design allows independent replacement of the OPIC1 transceiver module. Ensure revision compatibility with your existing N4BG carrier.
Q: What fiber type is required — plastic or glass?
A: The OPIC1 supports both plastic optical fiber (POF) and glass fiber depending on cable run length. Refer to ABB system engineering guide for fiber selection criteria.
Q: Do you provide an ABB Factory Acceptance Test (FAT) certificate?
A: Original ABB FAT certificates are provided where available. Konmask functional test reports are included with all shipments.
Q: What is the lead time?
A: In-stock units ship within 1–3 business days. Out-of-stock units: 2–6 weeks depending on sourcing. Contact us for real-time availability.
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