The ABB 1MRK000173-BC, also cataloged as the 1MRK000173-BC Binary Input Module, operates as a dedicated hardware component for high-speed discrete state sensing within control chassis subracks.

Assembly Structure & Identifier Mapping

• Full Ordering Model: 1MRK000173-BC
• Base Module Type: 1MRK000173-BC
• Tariff Heading: 8537101190
• Country of Origin: Sweden

Physical & Performance Data

Industrial Control Backplane Execution

The 1MRK000173-BC binary input module integrates into internal rack communications, maintaining high backplane bus communication velocity across high-density I/O arrays. Real-time channel scanning provides input detection with a response time below 3 ms. Integrated firmware flash compatibility ensures synchronized operational timing across system controllers while maintaining 2.5 kV RMS isolation from field logic circuits.

Package Inventory

• 1 x ABB 1MRK000173-BC Binary Input Module
• 1 x Electrostatic Discharge Protective Sleeve

Chassis Wiring & Mounting Directives

Module Insertion Procedure

• De-energize subrack backplane power before inserting the module into the designated guide slot.
• Secure upper and lower retention screws to establish continuous chassis grounding.

Field Signal Cabling

• Run 24 VDC input wiring away from high-voltage AC cables to limit noise coupling.
• Terminate shield ground wires at standard cabinet entry earth bars using brief ground leads.

Technical Questions and Answers

• Does the 1MRK000173-BC support online hot-swapping under live rack power?

  Power down the rack slot before removing or installing the module to avoid transient backplane disturbances.

• What is the nominal operating voltage range for field input channels?

  The input channels accept standard 24 VDC potential within an operational range of 18 VDC to 30 VDC.

• What galvanic isolation rating protects internal controller logic from field surges?

  The channel isolation circuit withstands continuous voltage stress up to 2.5 kV RMS between field inputs and backplane logic.

• What signal propagation speed is achieved by the input sensing circuit?

  The module processes field status changes with a total hardware response delay of less than 3 ms.

• How does the module handle voltage spikes on input terminals?

  Internal protection clamp circuits safeguard each input channel against DC transient surges up to 300 VDC.

• What current level does each channel draw when fully energized?

  Individual field input channels draw between 2 mA and 10 mA under 24 VDC nominal operating conditions.

• Are external cooling fans mandatory during low-temperature operation?

  The card functions across ambient environments from -40 deg C to +70 deg C using passive convection inside the chassis.

• How does firmware synchronization impact backplane module replacement?

  Firmware flash compatibility allows automatic version matching when connected to the primary system controller.