Honeywell TC-FIA121 Analog Input Module

Honeywell TC-FIA121 Analog Input Module

Product Introduction

The TC-FIA121 belongs to Honeywell's proven TC Series of I/O modules. It provides twelve single-ended, non-isolated input channels for high-level analog signals. Engineers deploy this module where accurate multi-channel measurement is critical. The unit accepts both current and voltage inputs through user configuration. Typical applications include process automation, manufacturing lines, and utility monitoring systems.

Technical Specifications

The TC-FIA121 delivers robust signal acquisition with a successive approximation conversion type. It achieves 16-bit resolution in two's complement data format. Users can configure each channel for 4-20mA, 0-20mA, ±10V, or 0-10V operation. Specifically, the current terminal presents less than 100 ohms impedance, while the voltage terminal exceeds 1 megohm. Resolution reaches 320µV/count for voltage inputs and 0.641µA/count for current inputs. Absolute accuracy remains within 0.10% Full Scale at 25°C for both terminal types. Furthermore, accuracy drift stays at a low 0.004% Full Scale per °C across the operating range.

Conversion and Filtering Performance

The module converts all twelve channels in 8.0 milliseconds. Normal mode rejection reaches -52dB at 50Hz and -54dB at 60Hz for standard voltage or current terminals. With the Quick Step feature enabled, engineers obtain a faster step response of 0.09 seconds to 63%. Meanwhile, standard step response measures 1.3 seconds. The TC-FIA121 requires no field calibration, which reduces commissioning time. Flexbus current draw sits at 80mA at 5V dc. Maximum power dissipation is 1.2 W at 31.2V dc, translating to 4.1 BTU/hr thermal dissipation.

Mechanical and Environmental Parameters

The module measures 94mm in height, 94mm in width, and 53.3mm in depth. It accepts 12 gauge (4mm²) stranded conductors with 1.2mm maximum insulation. Isolation voltage is rated 50V continuous, tested at 850V dc for 60 seconds between user and system circuits. However, individual channels share a common ground without isolation between them. Operating temperature spans -20°C to 60°C, while storage extends from -40°C to 85°C. Humidity tolerance ranges from 5% to 95% non-condensing. The unit withstands 30g operating shock and 5g vibration at 10-500Hz. A single green/red LED indicator provides power and status feedback. Maximum overload protection is 30V or 32mA continuous on one channel at a time.

Installation Guide

First, verify the keyswitch position is set to 3 before inserting the module into the TC chassis. Next, connect field wiring to the terminal block using the specified wire gauge. Ensure that current and voltage signal types match the configuration selected in the control software. Additionally, route wiring away from high-voltage lines to minimize electrical noise. Finally, secure the module firmly and confirm the status LED shows normal operation after power-up.

Packaging List

• 1 x Honeywell TC-FIA121 Analog Input Module

• 1 x Anti-static protective bag

• 1 x Carton packaging

FAQ

Q1: What signal types does the TC-FIA121 accept?
A: The module accepts 4-20mA, 0-20mA, ±10V, and 0-10V signals. Users select the input type via software configuration for each channel.

Q2: Does this module require external calibration?
A: No calibration is required. The TC-FIA121 ships factory-calibrated and maintains accuracy within 0.10% Full Scale at 25°C.

Q3: How many channels can the TC-FIA121 handle simultaneously?
A: It provides twelve single-ended channels. However, overload protection applies to one channel at a time at 30V or 32mA maximum.

Q4: What is the conversion time for all channels?
A: The module completes conversion for all twelve channels in 8.0 milliseconds. Quick Step mode further improves step response to 0.09 seconds.

Q5: How do you ship the TC-FIA121?
A: We ship via Fedex, UPS, and DHL. Stock items typically dispatch within 3 business days after payment confirmation.