Product Details
Configured for high-resolution analog signal acquisition in Honeywell Experion PKS platforms, the Honeywell TC-IAH161 (TC-IAH161 High Level Analog Input Module) provides direct physical/electrical execution. It digitizes signals across 16 channels, supporting voltage ranges up to +/- 10.25 VDC and current inputs from 0 to 20.5 mA using internal 249 ohm precision resistors. The module converts field transmitter values into 16-bit digital variables for cyclic backplane transmission.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | TC-IAH161 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 1.5 kg |
| Dimensions | Standard Experion Chassis Form Factor |
| Operating Temp | -20 to +70 deg C |
| Power Consumption | 4.1 W max |
| Product Type | Analog Input Modules |
| Channel Count | 16 channels |
| Input Voltage Ranges | +/- 10.25 VDC, 0 to 10.25 VDC, 0 to 5.125 VDC |
| Input Current Range | 0 to 20.5 mA (internal 249 ohm resistor) |
| Resolution | 16 bits across selected range |
| Module Publish Rate | 250 msec |
| Input Impedance | Greater than 1.0 megohm (Voltage), 249 ohms nominal (Current) |
| Channel Bandwidth | 20 Hz (-3dB) |
| System Isolation | 2550 VDC tested for 1 s (User to system) |
| Terminal Block Interface | TC-TBCH 36-position terminal block |
Process Control & Field Signal Conditioning
The TC-IAH161 incorporates channel-to-channel isolation and input filtering networks to eliminate high-frequency field noise. When integrated with 4-20 mA HART loop protocol transmitters and high-density DCS racks, the internal 249 ohm current sense resistors convert field loops into clean differential voltage signals. The 20 Hz input bandwidth and active filter circuits suppress common-mode voltage spikes and cross-talk, protecting internal ADC electronics while maintaining continuous signal updates to the controller backplane every 250 msec.
Frequently Asked Questions
Q: How are current signals converted to voltage values on the TC-IAH161?
A: Current loop inputs utilize internal 249 ohm nominal sense resistors onboard the module to drop 0 to 20.5 mA signals into proportional voltage inputs for the 16-bit analog-to-digital converter.
Q: What is the dielectric isolation rating between the field terminals and the system logic backplane?
A: The user-to-system electrical isolation barrier is 100% factory tested at 2550 VDC for 1 second, preventing high-voltage field transients from damaging backplane control electronics.
Field Installation Guidelines
- Chassis Insertion: Align the module card edges with the designated slot guide rails in the Experion rack and press firmly until the rear connector fully seats into the backplane.
- Terminal Wiring: Secure field conductors to the TC-TBCH 36-position terminal block. Tighten terminal screws to standard torque specs to avoid high-resistance terminations.
- Shield Grounding: Ground instrument cable shields at the single point earth ground bar within the enclosure to minimize electromagnetic interference and ground loop paths.
- Signal Separation: Maintain physical separation between low-level analog input wiring and high-voltage AC power lines within cabinet wire ducts to prevent noise coupling.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Spatial Computing in Industrial Automation: Elevating PLC and DCS Operations with AR and VR
Industry 4.0 integrates digital intelligence into field operations, transforming factory automation landscapes worldwide. Spatial technologies—specifically Augmented Reality (AR) and Virtual Reality (VR)—redefine how engineers interact with industrial control systems. By bridging computer-generated CAD models with real-time operational technology (OT) data, immersive displays enable intuitive monitoring, rapid diagnostics, and safer maintenance across complex processing facilities.
Master Acceptance Testing: Understanding FAT and SAT in Industrial Control Systems
Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) serve as critical quality assurance gateways in complex industrial control systems. Both procedures verify that programmable logic controllers (PLCs), distributed control systems (DCS), and associated field devices meet strict functional specifications. However, executing these tests effectively requires clear delineation between off-site staging and final field commissioning.
Industrial Networking Essentials: Demystifying Hubs, Switches, and Routers in Control Systems
Industrial automation relies heavily on robust networking infrastructure to connect programmable logic controllers (PLCs), distributed control systems (DCS), and human-machine interfaces (HMIs). Modern factory automation environments generate vast amounts of real-time operational data across deterministic networks. Understanding the structural differences between hubs, switches, and routers ensures optimal traffic segmentation, minimizes latency, and maintains high network availability.