ABB 500SCM01 1MRB200059/C 1MRB15004R0001 Control Module
The ABB 500SCM01 (Part Number: 1MRB150044R0001 / 1MRB200059/C) is a Signal Converter Module (often referred to as a Serial Communication or Station Control Module) within the ABB REB500 busbar protection family.
This module is primarily responsible for signal conditioning and interfacing between internal system logic and external control peripherals.
Introduction
The 500SCM01 serves as a critical interface component, often used to adapt signal levels or provide specific communication links within the REB500 rack.
While the CPU handles the logic, the SCM (Signal Converter Module) ensures that specialized signals—whether they be synchronization pulses, specific serial data, or inter-module links—are correctly translated and isolated.
The revision /C indicates a specific hardware iteration optimized for better signal integrity and resistance to electromagnetic interference.
Technical Parameter Table
| Parameter | Specification |
| Model Number | 500SCM01 |
| Order Code | 1MRB150044R0001 (Ref: 1MRB200059/C) |
| Function | Signal Conversion / Serial Interface |
| Inputs/Outputs | Specialized Signal Channels (Variable by config) |
| Galvanic Isolation | Up to 2.5 kV AC |
| Power Supply | Internal (via 500PSM backplane) |
| Hardware Rev | C |
| Dimensions | Standard 500 series plug-in width |
| Operating Temp | -10°C to +55°C |
Product Advantages and Features
Signal Integrity: High-quality isolation circuitry prevents transient noise from the substation yard from reaching the sensitive Central Processing Unit.
Low Latency: Optimized for real-time signal conversion, ensuring that time-critical data (like synchronization pulses) is processed without delay.
Ruggedized Build: Specifically designed for “harsh” electrical environments, exceeding standard industrial EMC requirements.
Standardized Interfacing: Uses the standard REB500 backplane connector, allowing for simple “plug-and-play” replacement within the subrack.
Compatibility: Fully compatible with both centralized and decentralized versions of the REB500 protection scheme.
500SCM01 1MRB200059C 1MRB15004R0001
Application Cases
Time Synchronization: Interfacing with external GPS or IRIG-B sources to synchronize the internal clocks of all bay units.
External Logic Interfacing: Converting signals from older, non-digital protection relays to a format the REB500 digital bus can interpret.
Redundant Communication Paths: Providing secondary signal paths for station-level control when the primary CIM (Communication Interface) is fully utilized.
Specialized Tripping Logic: Used in complex schemes where external “Permissive” signals are required from remote ends.
Installation and Maintenance
Installation
Verification: Confirm that the part number 1MRB150044R0001 matches the existing module slot; this module is slot-sensitive depending on the rack configuration.
Contact Check: Before insertion, inspect the backplane pins. Bend pins are a common cause of “Module Missing” alarms.
Seating: Use the front-panel levers to ensure the module is fully seated into the backplane before tightening the screws.
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Maintenance
Dust Accumulation: Because these modules are often passively cooled, ensure that the ventilation slots on the top and bottom of the rack are clear of dust.
Firmware Consistency: Ensure that the hardware revision /C is supported by the current system Base Software version.
Signal Testing: During yearly maintenance, use a signal generator to verify that the conversion accuracy of the inputs remains within the specified tolerance.
Related & Other Models in the Same Series
Model Description
500CUM05 Central Unit Management (Coordinates SCM data)
500CPU05 Main Processing Unit
500BIO01 Standard Binary I/O Module
500BIM01 Dedicated Binary Input Module
500BOM01 Dedicated Binary Output (Relay) Module
Would you like me to check the specific jumper settings or dip-switch configurations that might be required on the 500SCM01 circuit board before you install it?