GE CM415REBKH1B Communication and Control Module

Configured for high-speed data exchange and system-wide integration in Universal Relay (UR) series platforms, the GE Multilin CM415REBKH1B (CM415REBKH1B Communication and Control Module) provides direct physical execution of network protocol mapping and FlexLogic control sequencing.

Hardware Specifications

Industrial Control and Protection Metrics

• Backplane Bus Communication Velocity: The module utilizes the high-speed UR backplane to ensure deterministic exchange of control signals and process data. It is engineered to support the sub-millisecond response requirements of complex protection schemes, ensuring that FlexLogic automation commands are synchronized with the host relay's scan cycle.
• Profinet / EtherNet/IP Deterministic Networks: The module supports IEC 61850 Edition 2, providing deterministic data exchange for substation automation systems (SAS). This integration allows for real-time reporting of breaker states, protection events, and metering data over standardized industrial network architectures.
• I/O Density Scaling: The module acts as the primary interface node for breaker control and bay interlocking. Through programmable FlexLogic, it enables the scaling of control density, allowing for custom automation sequences that coordinate multiple protection zones within the substation environment.
• Firmware Flash Compatibility: Network configurations and logic mapping are integrated with the host relay firmware. The module supports seamless field-updates, ensuring that protocol stacks (DNP3, Modbus, IEC 61850) remain compliant with the latest cybersecurity standards and system requirements.

Frequently Asked Questions

Q: Does the hot-swappable capability apply to the Ethernet and serial communication links?

A: Yes. The CM415REBKH1B is designed for hot-swapping within a powered UR chassis. However, removing the module will result in a temporary loss of communication to the host relay and any downstream networked devices. Ensure that the protection logic is accounted for in a redundant configuration before removing the module from a live cabinet.

Q: Is FlexLogic programming required for the module to handle standard network traffic?

A: No. Standard network communication, such as Modbus or DNP3 polling, is managed by the base firmware and requires no custom logic. FlexLogic is only required for specialized automation, such as complex interlocking schemes or cross-relay coordination.

Field Installation Guidelines

• Mechanical Seating: Align the module with the chassis guide rails and slide it into the relay housing. Ensure the latch mechanism is fully engaged to maintain a low-impedance connection to the high-speed backplane.
• Shielding and Grounding: Terminate all communication cable shields at the cabinet ground bus or the designated shielding terminal. Proper grounding is necessary to protect the internal high-speed switching logic from transient voltage spikes typical of substation environments.
• Cable Management: Maintain strict separation between high-voltage CT/VT leads and communication cabling. Utilize fiber optic interfaces where available to eliminate electromagnetic interference (EMI) risks in high-voltage switchgear environments.