Honeywell TC-FIAH81 Analog Input Module 8-Channel High-Level

Availability: 20 left in stock

Product Overview The TC-FIAH81 is a high-performance analog input module engineered for Honeywell Experion PKS, TDC 3000, and C200 controller platforms. It...

SKU: TC-FIAH81

Manufacturer: Honeywell
Product No.: TC-FIAH81
Product Type: Analog Input Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 110g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The TC-FIAH81 is a high-performance analog input module engineered for Honeywell Experion PKS, TDC 3000, and C200 controller platforms. It serves as a mechanical necessity for high-level signal acquisition, providing eight single-ended channels to interface with field transmitters and sensors. By supporting both voltage ( $\pm$ 10 V, 0–10 V) and current (4–20 mA, 0–20 mA) inputs, the TC-FIAH81 offers authoritative flexibility for process monitoring. Its robust galvanic isolation and 12-bit resolution ensure trustworthy data conversion in mission-critical environments such as oil refineries, chemical processing plants, and power generation facilities.

Detailed Technical Specifications

Attribute	Details
Manufacturer	Honeywell
Model Number	TC-FIAH81
Product Type	High-Level Analog Input Module
System Compatibility	Experion PKS, TDC 3000, C200 Controllers
Number of Channels	8 Single-ended Inputs
Input Signal (Voltage)	$\pm$ 10 V, 0 to 10 V
Input Signal (Current)	4 to 20 mA, 0 to 20 mA
Resolution	12 bits (Unipolar); 11 bits + sign (Bipolar)
Input Impedance	Voltage: 100 k$\Omega$; Current: 238 $\Omega$
Isolation Voltage	850 V DC for 1 second (User-to-System)
Backplane Power (FlexBus)	5 VDC @ 15 mA; 24 VDC @ 60 mA
Power Dissipation	3 W Maximum @ 31.2 V DC
Thermal Dissipation	10.2 BTU/hr
Operating Temperature	0 °C to +60 °C (32 °F to 140 °F)
Dimensions	105 × 115 × 90 mm
Weight	0.11kg (Unit) / 0.22 kg (Shipping)

Installation and Engineering Application

Chassis Integration: Align the TC-FIAH81 with the guide rails in the C200 or Experion I/O chassis. Press firmly to engage the FlexBus connectors. Authoritative seating is required to maintain reliable 5 VDC and 24 VDC power distribution.
Input Configuration: Configure each of the 8 channels for either voltage or current via the Experion Control Builder software. Ensure the field wiring matches the software-selected signal type to prevent measurement errors.
Redundancy Setup: In critical process loops, deploy the TC-FIAH81 in a redundant configuration. This ensures that sensor monitoring for pressure, flow, or temperature continues without interruption during a hardware fault.
Signal Integrity: For 4–20 mA loops, utilizing the 238 $\Omega$ precision resistor circuit is a mechanical necessity for stable current-to-voltage conversion. Always use shielded twisted pair (STP) cabling to leverage the module's high-level RFI immunity.

Technical FAQ

What happens if the input signal exceeds 10V or 20mA?

The TC-FIAH81 is designed with over-range protection; however, sustained levels far beyond the specified range can lead to data saturation. Regular calibration and the use of software-based limit alarms are recommended for trustworthy operation.

Does this module require external power for the analog loops?

The module draws its logic power (5V and 24V) from the chassis backplane. Depending on the field transmitter type (2-wire vs. 4-wire), an external field power supply may be required to drive the 4–20 mA loop current.

Can I mix voltage and current signals on the same module?

Yes. The TC-FIAH81 allows for channel-specific configuration. You can monitor a 0–10 V pressure signal on Channel 1 and a 4–20 mA flow signal on Channel 2 simultaneously, provided the wiring is correctly terminated.

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