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Description
Technical Specifications
| Parameter Name | Value |
|---|---|
| Product Model (Main Board) | 1KHW002238R0001 |
| Product Model (Interface Board) | 1KHW002237R0001 |
| Assembly Code (Main) | N4BG |
| Assembly Code (Interface) | OPIC1 R1A |
| Manufacturer | ABB |
| Product Type | Optical Interface Control Board / Carrier Board Set |
| Interface Type | Fiber Optic (ST / HFBR connectors) |
| Core Function | Optical-to-Electrical Signal Conversion & Galvanic Isolation |
| Typical Operating Voltage | 24V DC (System Dependent) |
| Dimensions (Approx.) | 145 mm × 220 mm × 25 mm (N4BG) / 156 mm × 125 mm × 81 mm (OPIC1) |
| Weight (Net) | Approx. 0.42 kg (N4BG) / 0.70 kg (OPIC1) |
| Country of Origin | Switzerland / Sweden |
| Mounting Type | Backplane / Rack Slot Installation |
| Signal Type | Digital Control & Fiber Optic Pulse Signals |
| Operating Temperature | -25°C to +70°C (Typical Industrial Range) |
Main Features and Advantages
High-Speed Fiber Optic Communication and Galvanic Isolation: The ABB 1KHW002237R0001 OPIC1 R1A is specifically designed to provide a high-speed optical communication link between control electronics and power semiconductor firing circuits. By utilizing fiber optic transmission, the 1KHW002237R0001 achieves complete galvanic isolation, effectively neutralizing severe electromagnetic interference (EMI) from nearby high-voltage transformers and switchgear. This ensures that critical control signals remain immune to noise and ground potential differences, preserving signal integrity and protecting the system’s “brain” (the 1KHW002238R0001 N4BG logic board) from destructive power surges. The optical architecture translates control signals in fractions of a millisecond, guaranteeing that safety triggers in high-voltage utility paths are executed fast enough to prevent cascading equipment failures.
Matched Board Set Architecture for System Integration: The 1KHW002238R0001 N4BG and 1KHW002237R0001 OPIC1 R1A are designed as a complementary pair, working together to deliver a complete control and interface solution. The 1KHW002238R0001 typically serves as the main logic platform, hosting microcontrollers, memory chips, and power regulation circuits, while the 1KHW002237R0001 handles the optical signal conversion and distribution. This modular architecture simplifies system maintenance, as each board can be individually replaced or upgraded without discarding the entire assembly. The pair is built to rigorous ABB industrial standards, with robust multi-layer PCB construction, surface-mount components rated for continuous operation, and protective coatings that resist mechanical vibration and temperature fluctuations common in substation and industrial environments.
Legacy System Compatibility and Lifecycle Extension: The ABB 1KHW002238R0001 and 1KHW002237R0001 are critical for maintaining and extending the operational life of existing ABB installations. As field-replaceable units, they allow plant engineers to restore functionality to aging UNITROL excitation systems, MEGATROL drives, and telecommunications frameworks without the need for complete system overhauls. The availability of these boards as spare parts ensures that facilities in power generation, transmission, and heavy industry can continue to rely on their proven ABB infrastructure, reducing capital expenditure and minimizing downtime associated with hardware failures.
Application Fields
High-Voltage Power Electronics and Transmission Systems: The primary application domain for the ABB 1KHW002238R0001 and 1KHW002237R0001 is within high-voltage power electronics systems, including HVDC (High Voltage Direct Current) converter stations and Flexible AC Transmission Systems (FACTS). In these environments, the 1KHW002237R0001 OPIC1 R1A provides the essential optical link that allows the control system to manage high-power thyristor or IGBT valves while maintaining complete electrical isolation from the high-voltage environment. The paired boards are integral to the operation of Static Var Compensators (SVC), where they regulate reactive power and stabilize grid voltage, ensuring power quality and system reliability.
Generator Excitation and Motor Drive Systems: The ABB 1KHW002238R0001 and 1KHW002237R0001 set is extensively used in ABB UNITROL 6000 excitation systems and MEGATROL drive platforms. These systems are critical in power plants and large industrial facilities for controlling the excitation current of synchronous generators and the speed/torque of large AC and DC motors. The 1KHW002237R0001 ensures that firing pulses for the power semiconductors are transmitted with precision and immunity to noise, while the 1KHW002238R0001 executes the complex control algorithms for voltage regulation and motor control. This makes the board set a vital component for applications ranging from hydroelectric and thermal power generation to rolling mills and mine hoists.
Utility and Telecommunications Infrastructure: In addition to power electronics, the ABB 1KHW002237R0001 OPIC1 R1A finds application in utility telecommunication networks and substation automation, often deployed within ABB’s rugged FOX61x series multiplexer platforms. Here, it serves as a core hardware interface, enabling reliable long-distance fiber optic communication for protection signaling, remote terminal units (RTUs), and control data. The board’s robust design ensures reliable service in harsh substation environments, providing the low-latency communication essential for coordinated protection schemes and grid management.
Related Products
- ABB UNITROL 6000 Series: The excitation control system platform where the 1KHW002238R0001 and 1KHW002237R0001 are commonly deployed as interface and logic boards.
- ABB MEGATROL Drives: A family of large variable-speed drive systems that utilize these optical interface boards for signal transmission between control and power sections.
- ABB FOX615 / FOX612 Multiplexers: Telecommunications platforms where the 1KHW002237R0001 OPIC1 R1A serves as a core interface control board for fiber optic communication.
- ABB 1KHW002238R0002: A potential revision variant or functionally similar carrier board model for related ABB systems.
- ABB 1KHW002237R0002: A potential revision variant of the OPIC1 interface board, requiring careful firmware compatibility checks when replacing the R1A version.
- ABB CI855K01: A communication interface module often used alongside carrier boards like the 1KHW002238R0001 for network connectivity in DCS racks.
- ABB DI810 / DO810: Digital I/O submodules that may be mounted on related ABB carrier platforms for additional discrete control capabilities.
