Description
The ABB 1MRK000167-GBR00 is an internal Control / PC Circuit Board (microprocessor-based logic card) used as the core processing node inside selected ABB equipment—including ACS-series variable frequency drives, feeder protection relays (REF/RET families), and bay control units. It executes closed-loop control algorithms, manages internal bus communication with I/O and power-stage boards, and handles parameter storage, making it the “brain” of the host device.
Application Scenarios
A 220 kV substation’s 33 kV feeder protection panel, built around an ABB numerical relay, suddenly displayed “Board Failure – Control Card” and refused to arm the trip circuit. The protection engineer identified the faulty internal PCB as the ABB 1MRK000167-GBR00, which serves as the relay’s main processing board—running the distance/protection algorithm and managing the HMI and communications port. A pre-verified spare 1MRK000167-GBR00 was plugged into the same slot after backing up the configuration (or downloading from the engineering tool). The replacement board booted, validated the firmware version, and the relay returned to healthy status within minutes—restoring full primary protection without needing to change the entire relay unit. The site’s protection technician commented: “Having the correct 1MRK000167-GBR00 on the shelf turned what could have been a multi-day relay change-out into a ten-minute board swap and a download. That’s why we keep this PCB as a critical spare for all our ABB bays.”
Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1MRK000167-GBR00 |
| Manufacturer | ABB (Industrial Automation / Power Protection — Internal PCB Spare) |
| Product Category | Control Circuit Board / PC Board / Microprocessor Logic Card |
| Supply Voltage | 12 V DC or 24 V DC (derived from host-unit backplane; ±10%) |
| Processor | 32-bit microcontroller / DSP (typical 40–48 MHz class) |
| Memory | 64 MB–128 MB Flash / RAM (version-dependent; stores firmware & parameters) |
| Communication I/F | Internal backplane bus + RS-485 (service / Modbus); some variants CAN / Ethernet |
| Isolation | Channel-to-backplane isolation ≥ 1.5 kV AC (optical / transformer coupled) |
| Operating Temp. | -20 °C to +70 °C (some references -40 °C to +70 °C), industrial grade |
| Storage Temp. | -40 °C to +85 °C |
| Dimensions (approx.) | 100–175 mm × 90–110 mm × 20–30 mm (varies by host equipment) |
| Mounting | Internal PCB mount — edge connector + guide rails / screw fixings in host chassis |
| Typical Host Units | ABB ACS drives (control section), REF615 / RET650 / REB650 relay internals, bay controllers |
| Certification | CE, UL (as part of host equipment assembly) |
Technical Principles and Innovative Values
The ABB 1MRK000167-GBR00 is the computational heart of the host device rather than a standalone I/O module:
- Innovation Point 1 — Integrated Real-Time Control & Protection Algorithm Engine: The onboard 32-bit processor runs deterministic firmware cycles (protection element evaluation, PWM setpoint calculation, or PID regulation) synchronized to the power-stage sampling clock, ensuring sub-cycle response critical for arc-flash mitigation or fast drive current limiting.
- Innovation Point 2 — Non-Volatile Parameter Retention & Clone Capability: Configuration data, setting groups, and commissioning parameters are stored in on-board Flash/EEPROM. The 1MRK000167-GBR00 supports parameter upload/download via service port or engineering PC, enabling exact clone replacement—swap the PCB, download the saved file, and the system behaves identically.
- Innovation Point 3 — Multi-Layer Self-Diagnostics at Power-Up: At each boot, the board performs checksum verification of firmware, RAM write/read test, watchdog timer validation, and backplane link check. Any anomaly lights the host’s “Board Fault” LED before the unit goes online, preventing operation with corrupted logic.
- Innovation Point 4 — Host-Bus Optimized Architecture: Unlike generic SBCs, the 1MRK000167-GBR00 talks directly to the host’s analog-front-end and power-stage interface via a parallel/serial backplane bus, achieving microsecond-level data exchange without external fieldbus overhead—essential for closed-loop drive control or high-speed protection tripping.
