Description
The ABB 1KHW002238R0001 (Assembly OPIC1 R1A) is a high-precision Optical Interface and Control board utilized within ABB’s high-voltage power electronics and excitation systems, such as the UNITROL series. This board functions as a high-speed communication bridge, converting electrical control signals into optical pulses for fiber-optic transmission. The R1A revision represents a specific hardware iteration optimized for signal integrity and low-latency data throughput in electrically noisy environments.
- System Compatibility: ABB UNITROL Excitation Systems / MEGATROL Power Electronics
- Assembly Type: OPIC1 (Optical Interface Card)
- Revision: R1A
- Optical Channels: Multi-channel Fiber Optic (ST or SMA connectors)
- Data Transmission: High-speed synchronous serial data
- Isolation Voltage: High-level galvanic isolation via fiber-optic medium
- Power Supply: 24V DC auxiliary input via backplane
Product Datasheet
| Feature | Specification |
|---|---|
| Model | ABB 1KHW002238R0001 |
| PCB Number | 1KHW002237R0001 |
| Function | Optical Interface Control (OPIC1) |
| Dimensions | 235 x 165 x 25 mm |
| Weight | 0.41 kg |
| Country of Origin | Switzerland |
| Connector Type | Fiber Optic Transceivers |
| Coating | Conformal coated for industrial protection |
Application Fields
This optical interface board is a critical component in the following large-scale power applications:
- Power Plant Excitation: Interfacing the main controller with power conversion modules in UNITROL 6000 systems.
- Static Frequency Converters (SFC): Providing isolated control signals for high-power thyristor or IGBT bridges.
- Substation Automation: High-speed data links between control racks where electrical interference prevents copper wiring.
- Marine Propulsion: Integrated into large-scale ABB AC drives for vessel motor control and power management.
Product Instructions
- Safety Protocol: High-voltage systems must be completely de-energized and grounded before accessing the control cabinet.
- Fiber Care: When handling the 1KHW002238R0001, ensure the dust caps remain on the optical ports until the moment of connection. Clean fiber tips with a specialized lint-free wipe before insertion.
- Installation: Align the board with the PCB guides in the sub-rack. Slide the board forward until the electrical backplane connector is fully engaged.
- Fiber Connection: Plug the fiber-optic cables into the TX (Transmit) and RX (Receive) ports. Do not exceed the minimum bend radius of the fiber cables to avoid signal attenuation.
- Diagnostic Check: Once powered, verify the “Status” or “Link” LEDs. A steady light typically indicates a successful optical handshake with the remote module.
Q&A – Common Questions
Q1: What is the difference between the 1KHW002238 and 1KHW002237 numbers? A1: 1KHW002238R0001 is the final orderable assembly (the complete functional board), whereas 1KHW002237R0001 is the part number for the raw printed circuit board (PCB) substrate used in the assembly.
Q2: Can I use the OPIC1 R1A to replace an OPIC1 R1B? A2: Generally, hardware revisions in the UNITROL series are backward compatible (R1B can replace R1A). However, replacing a newer revision with an older one (R1A replacing R1B) may require checking if specific firmware features or higher-speed transceivers are utilized in the newer version.
Q3: How do I troubleshoot an “Optical Link Failure” alarm? A3: First, check for physical damage or sharp bends in the fiber cables. Use an optical power meter to verify signal strength. If the cable is intact, the transceiver on the OPIC1 board may be faulty and require board replacement.
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