Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | 500PB101 |
| Ordering Number | 1MRB178009R0001 |
| Variant | 1MRB200064/C |
| Product Type | PROFIBUS Communication Module |
| System | ABB REB500 |
| Communication Protocol | PROFIBUS-DP |
| Communication Role | Protection-system to station/control-system interface |
| Interface | PROFIBUS |
| Typical Application | Substation automation |
| Mounting | REB500 system rack |
| Firmware | System/revision dependent |
| Configuration | REB500-system dependent |
| Hardware Revision | /C |
| Status | Legacy / installed-base hardware |
A current secondary reference specifically identifies the 500PB101 as a PROFIBUS-DP communication module for REB500 and describes it as an interface between the protection system and external fieldbus networks.
Specification caution: Some commercial listings incorrectly describe this exact part as a power-supply module or generic I/O motherboard, with unrelated specifications such as 24 VDC/12 × 2 A outputs. Those claims conflict with the REB500-specific references and should not be used for engineering decisions.
Product Introduction
The ABB 500PB101 1MRB178009R0001 is a communication module associated with ABB’s REB500 busbar protection architecture. Its purpose is to provide an external communication path from the protection system to a higher-level substation automation, monitoring, or control system.
500PB101
The ABB 500PB101 is identified in current technical references as a PROFIBUS-DP interface. In an installed system, this allows protection-system information to be exchanged with a PROFIBUS master or station-level controller. The information exchanged can include protection status, measurements, alarms, and control-related data, depending on the configured application.
The ABB 1MRB200064/C designation is important because the 500PB101 appears in several secondary-market descriptions with inconsistent technical classifications. ABB-related documentation places the exact 500PB101 1MRB178009R0001 1MRB200064/C within the same hardware ecosystem as the 500CPU03, 500SCM01, 500TRM02, and 500BOM01.
This makes the module fundamentally different from a general-purpose PLC PROFIBUS card. Its compatibility is tied to the architecture, hardware revision, configuration software, and the external PROFIBUS master.
Main Features & Field Considerations
PROFIBUS-DP integration
The 500PB101 provides the communication bridge between the protection system and an external PROFIBUS-based automation system.
system integration
The module is intended for the ABB environment rather than general-purpose standalone PLC applications. Correct rack position and system configuration matter.
Diagnostic capability
The communication path should be evaluated through both the module indicators and the external PROFIBUS master diagnostics. A communication failure does not automatically indicate a defective 500PB101.
Replacement checks
Before replacing an ABB 500PB101 1MRB178009R0001 1MRB200064/C, verify:
- Exact model: 500PB101
- Ordering number: 1MRB178009R0001
- Variant: 1MRB200064/C
- hardware configuration
- PROFIBUS master type
- PROFIBUS station address
- GSD file/version
- Bus termination
- Cable and connector condition
- Existing configuration
- Firmware/hardware revision
Troubleshooting
For a PROFIBUS communication failure, check the system in this order:
- 500PB101 power/status indication
- PROFIBUS connector
- Cable continuity
- Bus termination
- Station address
- PROFIBUS master diagnostics
- GSD/configuration consistency
- 500PB101 hardware
A common field mistake is replacing the communication module when the actual problem is incorrect termination, address configuration, or a damaged PROFIBUS cable.
Typical Applications
The ABB 500PB101 is particularly relevant to:
- busbar protection
- Substation automation
- Switchgear protection systems
- PROFIBUS-based station control
- Protection-system status monitoring
- Integration with DCS/SCADA systems
Procurement Note
For ABB 500PB101 1MRB178009R0001 1MRB200064/C, use the complete three-part identification when sourcing the replacement.
The strongest available evidence supports classification as a PROFIBUS communication module for ABB’s environment, while several commercial pages incorrectly label the same part as a power-supply or generic I/O module.
For an operating substation, preserve the PROFIBUS configuration, station address, GSD information, master configuration, and existing wiring before replacing the module. A physically matching board without the correct communication configuration may still fail to establish the protection-system link.
