Honeywell TK-RPDXX1 Redundant DC Power Supply Module

The Honeywell TK-RPDXX1 is a 24 VDC redundant power supply module designed for Honeywell Chassis Series-A control systems. It provides DC input power for the chassis power system, which distributes operating voltages to installed control modules. The TK version is identified as the coated version of the RPDXX1 power supply, making the complete model designation important when identifying replacement hardware.

Power Supply Function

The TK-RPDXX1 belongs to Honeywell's redundant DC power supply configuration. The documented arrangement uses two power supply modules connected through a chassis adapter. If one supply fails, the other supply carries the load, maintaining power availability for the connected chassis.

The RPDXX1 is compatible with both documented redundant power system cable and adapter versions. The power cables and chassis adapter must match the applicable system configuration.

Electrical Characteristics

The specified DC input range is 16-32 VDC. The power supply provides a maximum combined output power of 75 W at 60 deg C. Its output distribution includes multiple backplane voltage rails, which supply the electrical requirements of the installed control hardware.

The available backplane output ratings are:

• 1.2 VDC at up to 1.5 A
• 3.3 VDC at up to 4 A
• 5.1 VDC at up to 13 A
• 24.0 VDC at up to 2.8 A

The combined output across all voltage rails must remain within the 75 W maximum rating.

Technical Specifications

Compatible Power System Components

The redundant power configuration requires the appropriate chassis adapter and power cables. Honeywell documentation identifies the following associated components:

• RPSCA2: Chassis adapter used in the newer redundant power system configuration.
• PRSC04: Power cable for the newer configuration, with a female connector at the power supply end and a male connector at the adapter end.
• RPSCA1: Chassis adapter associated with the older configuration.
• PRSC03: Power cable associated with the older configuration.

The newer configuration uses two power cables and one chassis adapter. The documented cable length is 1 meter. Verify the installed adapter and connector arrangement before ordering replacement components.

Frequently Asked Questions

Q: Is the TK-RPDXX1 an AC or DC power supply?

A: It is the 24 VDC-input version of Honeywell's redundant power supply. The corresponding AC-input model is TK-RPCXX1, which has a different electrical input specification.

Q: What is the difference between TK-RPDXX1 and TC-RPDXX1?

A: Both are 24 VDC redundant power supply models. Honeywell installation documentation identifies the TK prefix as the coated version, while TC identifies the uncoated version.

Q: Does the TK-RPDXX1 operate independently as a redundant power supply?

A: The documented redundant arrangement requires two power supplies, a compatible chassis adapter, and the corresponding power cables. One supply can carry the load if the other fails.