Honeywell TC-FIAH81 Analog Input Module 8-Ch

Honeywell TC-FIAH81 High Level Analog Input Module

Product Introduction

The TC-FIAH81 is a high level analog input module from Honeywell's C Series I/O family. It provides eight single-ended, non-isolated input channels for process measurement. Specifically, each channel accepts user-configurable current or voltage signals. Engineers deploy this module in Experion PKS systems to read transmitters, sensors, and valve position feedback. Additionally, the unit uses a successive approximation conversion type with a 256µs conversion rate across all channels. Its left justified 16-bit two's complement data format integrates cleanly with the controller backplane.

Technical Specifications

The current terminal supports 4-20mA and 0-20mA ranges, both user configurable. Meanwhile, the voltage terminal accepts ±10V and 0-10V inputs. Current channels resolve at 5.13µA per count. Besides, input impedance measures 100k on the voltage terminal and 238 on the current terminal. The module draws 20mA at 5V DC from the Flexbus and dissipates 3W maximum at 31.2V DC. Furthermore, absolute accuracy holds at 0.20% full scale at 25°C for both terminals.

Normal mode rejection ratio reaches -3dB at 17Hz for voltage and -3dB at 9Hz for current. Accuracy drift with temperature stays near 0.004% full scale per °C. The TC-FIAH81 requires no calibration, which simplifies commissioning. Maximum overload tolerance is 30V or 32mA continuous on one channel at a time.

Mechanical and Environmental Parameters

Dimensions measure 46mm x 94mm x 53mm (1.8in x 3.7in x 2.1in). Operational temperature spans 0 to 55°C (32 to 131°F). Storage temperature ranges from -40 to 85°C (-40 to 185°F). Relative humidity stays at 5 to 95% non-condensing during operation. Shock ratings reach 30g peak operating and 50g peak non-operating. Vibration testing follows IEC 68-2-6 at 5g across 10-500Hz. The unit carries Class I Division 2 and Class I Zone 2 Group IIC certifications. Agency certification covers Groups A, B, C, and D.

Installation Guide

First, verify the keyswitch sits in position 3 before inserting the module. Next, wire field signals using 12 gauge (4mm²) stranded conductors maximum. Keep insulation at 3/64 inch (1.2mm) maximum for proper terminal fit. Connect current loops to the current terminal and voltage sources to the voltage terminal. Moreover, confirm the green power indicator lights after rack power-up. Finally, configure each channel range in the control software and verify readings against a known source.

Packaging List

• 1 × Honeywell TC-FIAH81 High Level Analog Input Module

• 1 × Anti-static protective bag

• 1 × Shock-absorbing foam packaging

• Shipping via Fedex, UPS, DHL

FAQ

Q1: How many input channels does the TC-FIAH81 provide?
A1: It offers 8 single-ended, non-isolated input channels with user-configurable ranges.

Q2: Which signal types can each channel accept?
A2: Channels accept 4-20mA, 0-20mA, ±10V, or 0-10V signals, all user configurable.

Q3: Does the TC-FIAH81 need field calibration?
A3: No, the module requires no calibration and holds 0.20% full scale accuracy at 25°C.

Q4: What is the operating temperature range?
A4: The module operates from 0 to 55°C (32 to 131°F) in non-condensing humidity.

Q5: How is the product shipped?
A5: We ship via Fedex, UPS, and DHL with anti-static and shock-absorbing packaging.