Honeywell 51199932-200 RAM Charger Assembly

The Honeywell 51199932-200 is a RAM Charger Assembly used for memory backup in Honeywell C300 controllers. It supplies backup power to controller RAM through a rechargeable battery arrangement, helping preserve retained memory when the normal power supply is interrupted. The assembly is identified in Honeywell Series C documentation as the four-connection version, superseding the earlier 51199932-100 two-connection assembly.

Function and System Role

The 51199932-200 supports memory retention for the Honeywell C300 controller. Its charging circuit works with the associated backup battery to provide standby power to RAM; it is a memory backup component rather than a general-purpose printed circuit board or an I/O signal module.

Honeywell system documentation identifies the assembly as a RAM charger mounted on a 3-inch IOTA, with a 3.6 VDC RAM battery and charger/monitor arrangement. The backup battery configuration and wiring should be checked against the installed Series C system design.

Technical Specifications

The voltage and current values above are reported in a reseller listing for a Revision B unit. Confirm the nameplate and assembly revision before using these values for replacement or electrical verification.

Model Selection and Replacement

The 51199932-200 is the four-connection RAM Charger Assembly. Honeywell's C300 maintenance documentation distinguishes it from the 51199932-100, described as the two-connection version, and identifies the -200 model as its superseding assembly. Verify the required connection arrangement and the installed backup battery configuration before ordering.

Frequently Asked Questions

Q: What is the function of the Honeywell 51199932-200?

A: It charges and supplies backup power for RAM associated with the Honeywell C300 controller, supporting memory retention during interruptions to normal power.

Q: What is the difference between 51199932-200 and 51199932-100?

A: The 51199932-200 is the four-connection RAM Charger Assembly, while the 51199932-100 is the two-connection version. Confirm the required configuration against the installed hardware before replacement.

Q: Does the 51199932-200 include the backup battery?

A: The assembly provides the RAM charging and backup-power function, but the available references do not consistently establish whether a particular supplied unit includes its battery. Verify the battery and accessory contents for the specific item being purchased.