ABB 1MRK00173-CC | Binary I/O Module Industrial Control Card

The ABB 1MRK00173-CC is a high-performance binary input/output module primarily utilized within the Relion family of protection and control relays, as well as the wider Advant and ABB power automation systems. This industrial control card is designed to handle discrete signals between the primary process equipment and the intelligent electronic device (IED). With its high-speed switching capabilities and robust electrical isolation, the 1MRK00173-CC ensures that critical status changes—such as breaker positions or alarm triggers—are communicated with microsecond precision, even in high-interference substation environments.

Product Specifications and Datasheet

• Product ID: 1MRK00173-CC
• Module Type: Binary Input/Output (BOM)
• Number of Channels: 24 Binary Inputs / 6 Binary Outputs (Typical configuration)
• Input Voltage Range: 24V DC to 250V DC (Software/Hardware selectable)
• Output Contacts: Heavy-duty signaling contacts
• Response Time: < 1 ms for signal processing
• Power Consumption: < 2.0 W at nominal load
• Dimensions (Depth): 160 mm
• Dimensions (Height): 100 mm (Standard Eurocard height)
• Dimensions (Width): 20 mm
• Weight: 0.45 kg
• Country of Origin: Sweden

Application Areas

The 1MRK00173-CC is a staple in electrical grid protection and substation automation. It is commonly found in 670 and 650 series Relion relays used for transformer protection, line distance protection, and busbar monitoring. Additionally, it serves as a reliable interface for digital control signals in heavy industrial power distribution centers, renewable energy substations, and marine electrical power management systems.

Product Operating Instructions

Before inserting the 1MRK00173-CC into the IED chassis, ensure that the system power is switched off to avoid potential voltage spikes. The module should be inserted into the designated I/O slot according to the system configuration diagram. Once seated, use the specialized configuration tool (such as PCM600) to map the binary inputs and outputs to their respective logical functions within the protection scheme. It is crucial to verify that the threshold voltage for binary inputs is correctly set to match the station battery voltage to prevent “ghost” triggers caused by induction. Ensure all terminal connections are tightened to the specified torque to maintain low-resistance signal paths.

Common Questions & Answers

Q: Can the threshold voltage for the binary inputs be adjusted? A: Yes, the 1MRK00173-CC typically supports programmable or jumper-set threshold levels to accommodate different DC station voltages (e.g., 48V, 110V, or 220V).

Q: Is this module hot-swappable in a live protection relay? A: Generally, no. To maintain the integrity of the protection logic and prevent accidental tripping of breakers, the relay should be taken out of service or powered down before replacing the I/O card.

Q: What is the purpose of the optical isolation on this card? A: Optical isolation protects the sensitive internal microprocessor of the IED from high-voltage surges and electromagnetic interference common in high-voltage switchyards.

Q: Does this card provide high-speed power outputs for breaker tripping? A: While it handles binary outputs, specific “tripping” modules (like the TRM) are usually reserved for high-current trip coils, while this BOM is used for signaling and auxiliary control.

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