TC-IAH161 Experion PKS Process I/O Series High Level Analog Input Module | Honeywell

Configured for high-density analog signal acquisition in Experion PKS Process I/O platforms, the Honeywell TC-IAH161 (TC-IAH161 High Level Analog Input Module) provides direct physical/electrical execution.

Hardware Specifications

4-20 mA HART Loop Protocol & Channel-to-Channel Isolation

The TC-IAH161 processes up to 16 high-level current or voltage signals, converting field sensor levels into digital representations via 16-bit analog-to-digital convertors. Integrated 249 ohm precision resistors accommodate 0 to 20.5 mA current loops, allowing direct coupling with standard 4-20 mA HART loop protocol field transmitters. Physical isolation rated at 2550 VDC between user-side field wiring and internal backplane logic prevents field-induced surge transients and common-mode potential shifts from degrading system bus communication.

Frequently Asked Questions

Q: Does the TC-IAH161 module require external precision resistors for current loop operation?

A: No, the module integrates internal 250 ohm (249 ohm nominal) precision sensing resistors directly on the card to convert current signals to voltage.

Q: Can the TC-IAH161 module be hot-swapped while the rack backplane is energized?

A: Yes, the chassis interface design allows Online Insertion and Removal (RIUP/hot-swap) without disrupting adjacent I/O modules on the same backplane.

Q: What terminal block is required to interface field conductors to the TC-IAH161 card?

A: Field connections require the dedicated TC-TBCH 36-position removable terminal block.

Field Installation Guidelines

1. Slide the TC-IAH161 module into its designated chassis slot along the card guide rails until the backplane connectors lock into place.
2. Secure the module mechanically by tightening the top and bottom retaining screws onto the chassis frame.
3. Wire field input conductors to the TC-TBCH 36-position terminal block, ensuring correct polarity for voltage or current loop configurations.
4. Ground individual cable shield drain wires to the system cabinet earth bus bar to preserve signal integrity against external high-frequency RF interference.