CC-SCMB02 51199932-200 Experion C300 Memory Backup Assembly | Honeywell

The Honeywell CC-SCMB02 51199932-200, also cataloged as the CC-SCMB02 Memory Backup Assembly, operates as a dedicated hardware component for continuous RAM power maintenance and volatile configuration retention within Honeywell Experion C300 controller networks.

Hardware Specifications

Channel-to-Channel Isolation and Cold Junction Compensation

The Honeywell CC-SCMB02 51199932-200 Memory Backup Assembly delivers isolated secondary charging currents directly to C300 controller RAM banks, maintaining volatile runtime database states independently of main backplane bus status. By maintaining power integrity across connected control nodes, the module prevents memory corruption in DCS platforms that interface with field transmitters executing 4-20 mA HART loop protocol communications or specialized thermocouple inputs using cold junction compensation (CJC).

Frequently Asked Questions

Q: How many C300 controllers can be backed up simultaneously by a single CC-SCMB02 assembly?

A: A single CC-SCMB02 module supports up to 4 C300 controller units simultaneously using dedicated power distribution combo cables.

Q: How does the CC-SCMB02 maintain power input redundancy during utility supply failures?

A: The module incorporates redundant AC power inputs designed for 100-120 VAC and 220-240 VAC feeds via a combo cable, ensuring seamless transition to backup charging rails if one power line drops.

Field Installation Guidelines

1. Mount the CC-SCMB02 assembly firmly onto the enclosure backpanel or rack mount rail using specified mechanical fasteners.
2. Verify AC power supply feeds meet the 100-120 / 220-240 VAC voltage requirements prior to landing wires onto the input combo cable assembly.
3. Route controller backup power cables in dedicated wiring troughs, keeping them separated from high-voltage AC load lines by a minimum distance of 200 mm.
4. Fasten all multi-pin output connectors onto the target C300 controller RAM backup interfaces, ensuring retaining screws are fully seated to prevent disconnection during operational vibration.
5. Connect the assembly chassis lug directly to the central cabinet protective earth (PE) bus using a low-impedance grounding conductor.