FC-TSGAS-1624 Honeywell Digital Input Field Termination Assembly

Product Description

The Honeywell FC-TSGAS-1624, also cataloged as the TSGAS-1624 Digital Input Field Termination Assembly, provides electrical termination for up to 16 safe gas or flame detector input channels. It accepts input currents from 0 to 25 mA and converts them to a 0 to 4 VDC output. The assembly also distributes an external 24 VDC supply to field transmitters through individual 500 mA fused circuits.

Hardware Specifications

Gas Detector Signal Conditioning and Power Distribution

The FC-TSGAS-1624 terminates 16 field input channels for safe gas and flame detector signals. Its specified input range is 0-25 mA, with a nominal application range of 0-20 mA. The 500 ohm input resistance and 0-4 VDC output define the stated electrical interface.

Additionally, the assembly distributes an external 24 VDC supply to field transmitters through 500 mA fused circuits. The listed fuse dimensions are 5 x 20 mm. The 250 VAC and 300 VDC ratings describe the specified voltage ratings; they do not establish the operating voltage of every connected circuit.

The listed 0.1% accuracy is retained as supplied. The reference conditions and measurement basis are not specified. The available data also does not establish channel-to-channel galvanic isolation, HART communication support, or a specific SIL rating.

Frequently Asked Questions (FAQ)

Q: How many gas or flame detector input channels does the FC-TSGAS-1624 support?

A: The assembly supports 16 input channels. The specified input current range is 0-25 mA, with 0-20 mA identified for the gas or flame detector application.

Q: What output signal does the assembly provide?

A: The specified output range is 0-4 VDC. The input resistance is 500 ohm +/- 5%, and the listed accuracy is 0.1%. The available specifications do not define the accuracy test conditions.

Q: How does the assembly protect the transmitter power circuits?

A: The assembly provides 24 VDC external power distribution to field transmitters through 500 mA fused circuits. The specified fuse size is 5 x 20 mm. Confirm the field wiring and fuse arrangement against the applicable manufacturer documentation before commissioning.

Field Installation Guidelines

1. Verify the model: Confirm the assembly label identifies FC-TSGAS-1624 or the corresponding TSGAS-1624 designation before installation.
2. Check the power supply: Verify the external 24 VDC supply polarity and wiring against the manufacturer terminal diagram.
3. Connect field signals: Match each gas or flame detector signal to its assigned input channel. Confirm that the detector output falls within the specified input range.
4. Inspect fuse protection: Verify the specified 500 mA fuse rating and 5 x 20 mm fuse dimensions. Use the manufacturer's wiring documentation to confirm the correct fuse positions and replacement requirements.
5. Separate signal and power wiring: Route low-level analog signal conductors away from high-current switching conductors where practical. Follow the applicable site grounding and shielding standards.
6. Verify electrical ratings: Check connected circuits against the documented input, output, and voltage ratings. Do not treat the 250 VAC or 300 VDC ratings as proof that the assembly accepts those voltages as operating inputs.
7. Perform commissioning checks: Inspect terminal connections and wiring continuity, then verify the input and output signals under controlled test conditions before connecting the assembly to the operating control system.

Other Attributes

• Series: Honeywell FSC
• Country of Origin:  USA
• Lead Time: In Stock, 2 Working Days

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