Experion PKS Analog Input Module Honeywell TC-IAH161

Product Description

The TC-IAH161 (Part Number: TC-IAH161) is a high-density, high-level analog input module engineered for the Honeywell Experion PKS environment. It provides 16 high-precision channels designed to interface with a variety of field transmitters. The module supports both voltage and current signals, making it ideal for monitoring critical process variables such as pressure, flow, and level.

Signal Precision and Resolution
Each channel on the TC-IAH161 utilizes a 16-bit analog-to-digital converter, ensuring high granularity across all input ranges. This enables precise detection of small signal changes, vital for sophisticated control loops. Data is processed at a publish rate of 250 milliseconds, providing consistent updates to the controller backplane.

Input Versatility and Hardware Specifications
The module handles multiple signal types without external converters for standard current loops:

• Voltage Input Ranges: ±10.25V, 0–10.25V, 0–5.125V

• Current Input Range: 0–20.5 mA (via internal 250 Ω precision resistor)

• Input Impedance: >1.0 MΩ for voltage; 249 Ω nominal for current

• Channel Bandwidth: 20 Hz (-3 dB) to filter high-frequency noise

Industrial-Grade Protection
The TC-IAH161 ensures reliability in electrically noisy industrial settings with RFI immunity, maintaining an error margin of less than 2.0% under 10 V/m interference. It also provides user-to-system isolation tested at 2550 VDC for one second, protecting control logic from high-voltage field transients.

Technical Summary

FAQ: Honeywell TC-IAH161

Q: Does this module support HART protocol?
A: No, the TC-IAH161 is a standard high-level analog input module. HART applications require a dedicated HART-capable module from the Experion series.

Q: Can I mix voltage and current inputs on the same module?
A: Yes, the module supports mixed ranges, but proper wiring to the TC-TBCH terminal block is required to engage the internal resistor for current loops.