Honeywell IOTA 8U-TDILA1 Digital Input Module 32-Channel

Overview

The 8U-TDILA1 (IOTA series) is a 32-channel digital input module designed for robust monitoring of discrete field signals in Honeywell Experion PKS and TPS control systems. The module offers isolated inputs, built-in filtering, and seamless IOHIGHWAY integration, ensuring reliable signal acquisition and system integrity.

Technical Specifications

• Model: 8U-TDILA1

• Manufacturer: Honeywell

• Number of Channels: 32 digital inputs per module

• Input Type: Dry contact or voltage-sourced signals

• Input Voltage Range: 0–35 V DC (Logic high >10 V, Logic low ≤5 V)

• Input Current: Typically 2.5 mA per channel at 24 VDC

• Isolation: 500 VDC between field wiring and system logic

• Response Time: <10 ms (configurable filtering available)

• Operating Temperature: -20°C to +70°C

• Power Supply: Powered via IOPS (I/O Power Supply)

• Backplane Interface: IOHIGHWAY at 1.2 Mbit/s or 4 Mbit/s

• Signal Conditioning: Built-in debouncing and filtering for reliable input detection

Applications

The 8U-TDILA1 is suitable for:

• Monitoring of discrete digital signals in Experion PKS or TPS platforms

• Systems requiring isolated 32-channel input modules

• Environments where input signal integrity and reliability are critical

• Integration with IOHIGHWAY backplane networks for direct module communication

FAQ

Q: Can this module handle both dry contact and voltage inputs?
A: Yes, the 8U-TDILA1 supports both dry contact and 24 V DC sourced inputs.

Q: What is the typical response time for the module?
A: Response time is under 10 ms, with configurable filtering to suit system requirements.

Q: How does it compare with 8U-TDILB1?
A: 8U-TDILB1 adds redundancy for fault-tolerant operation, while 8U-TDILA1 is standard 32-channel isolated input without redundancy.