Honeywell FC-TPSU-2430 Power Supply Converter

The Honeywell FC-TPSU-2430 is a DC/DC power converter designed for the Honeywell Safety Manager system. It converts a nominal 24 VDC input into a regulated 30 VDC output rated at 1 A. The FC version is identified as a conformal-coated configuration, intended for power conversion in Safety Manager hardware installations.

Power Conversion Function

The FC-TPSU-2430 accepts an 18-36 VDC input and supplies a regulated 30 VDC output. This conversion provides a separate voltage level for compatible downstream equipment, including supported field termination assemblies (FTAs).

The output is rated at 1 A and is short-circuit proof. Output regulation and overvoltage protection help maintain the specified DC supply conditions for connected equipment.

Electrical Performance

The converter uses switching DC/DC conversion. Its input range accommodates variations around the nominal 24 VDC supply, while the regulated output maintains a defined voltage for the connected load.

The specified output ripple is less than 0.1 Vrms over 0-30 MHz, and load-and-line regulation is less than 1%. These values are relevant when checking the power requirements of downstream instrumentation and termination hardware.

Status Monitoring and Alarm Output

The module includes local LED indication and a read-back relay contact for output voltage monitoring. When the DC/DC output voltage is within the acceptable operating condition, the LED illuminates and the relay contact closes. This feedback allows the Safety Manager application to monitor the converter's power status.

The output distribution provides six pairs of terminals, allowing 30 VDC and 0 VDC connections to be distributed to supported FTA equipment. The converter also supports redundant external power arrangements when used with compatible termination assemblies.

Technical Specifications

Installation and Connection Considerations

The FC-TPSU-2430 uses screw terminals for input power, output distribution and relay feedback. Its terminal arrangement includes:

• Terminals 3 and 4: 24 VDC input positive and negative.
• Terminals 1 and 2: Read-back relay contact.
• Terminals 1A/1B through 6A/6B: 30 VDC and 0 VDC output connections.

The 0 VDC output must be grounded to provide a predictable system response in the event of a field short circuit to earth. The input power must be switched off before connecting or removing the 24 VDC input conductors.

Frequently Asked Questions

Q: What is the difference between FC-TPSU-2430 and FS-TPSU-2430?

A: The FC configuration is conformal coated, while the FS configuration is non-conformal coated. The coating distinction is relevant when identifying the required hardware configuration for a Safety Manager installation.

Q: How does the FC-TPSU-2430 indicate an output power fault?

A: It uses an LED and a read-back relay contact to indicate output voltage status. When the output voltage is OK, the LED is on and the relay contact is closed. An abnormal voltage condition changes this indication.

Q: Which field termination assemblies can receive power from this converter?

A: The documented applications include the TSAI-1620m and TSHART-1620m analog input FTAs. These assemblies use an external 30 VDC supply for compatible transmitter power distribution.