Honeywell TC-IDX081 8-Point Diagnostic Input Module

Honeywell TC-IDX081 120VAC Diagnostic Input Module

Product Introduction

The Honeywell TC-IDX081 brings advanced diagnostics to discrete input monitoring in industrial control systems. This 8-point module arranges inputs in four points per common group. It accepts 120VAC signals across a 79-132VAC range at 47-63Hz. Moreover, the module detects open wire, loss of power, and current leak conditions. The TC-IDX081 supports IEC Type 1+ input compatibility. Engineers deploy it in process plants, manufacturing lines, and power distribution cabinets where fault detection matters. Specifically, its diagnostic functions reduce troubleshooting time and improve system uptime.

Technical Specifications

The Honeywell TC-IDX081 provides 8 input points configured as 4 points per common. Its on-state voltage range covers 79-132VAC at 47-63Hz. Additionally, nominal input voltage is 120VAC. Off-state voltage maximum reaches 20V. On-state current minimum is 5mA at 74V. Meanwhile, off-state current maximum stays at 2.5mA. Input impedance maximum is 12KΩ at 60Hz. Nominal input current is 11mA at 50Hz and 13mA at 60Hz. The module handles short and inrush currents up to 250mA peak, decaying to below 37% within 22ms without activation.

Diagnostic Functions

The module performs open wire detection with a transition range of 46 to 85VAC. It also identifies loss of power and current leak conditions with a 1.5mA minimum threshold. Furthermore, leakage resistor values vary by power supply voltage. For instance, a 120VAC ±15% supply requires a 51KΩ, ½W, 5% resistor. Besides, users calculate Rleak maximum as (P/S voltage minus 19VAC) divided by 1.5mA. Rleak minimum equals (P/S voltage minus 20VAC) divided by 2.5mA.

Delay Time and Power Parameters

Programmable delay times enhance signal filtering. Off-to-on hardware delay is 1ms and 2ms programmable, with 10ms maximum plus filter time. On-to-off delay is 9ms and 18ms programmable, with 8ms maximum plus filter time. Moreover, power dissipation is 4.5W. Backplane current follows module power consumption data.

Isolation Ratings

Channel-to-channel isolation is 100% tested at 2546VDC for one second. User-to-system isolation receives the same 2546VDC test for one second. Therefore, the TC-IDX081 maintains strong electrical separation across all circuits.

Mechanical and Environmental Parameters

The module connects through the TC-TBNH 20-position terminal block. It fits standard Honeywell TC series backplane slots. In addition, the 4.5W power dissipation supports stable thermal operation inside control cabinets. The compact housing suits dense panel layouts without extra clearance demands.

Installation Guide

First, confirm backplane power is off before inserting the Honeywell TC-IDX081. Next, seat the module firmly into its designated slot. Connect field wiring to the TC-TBNH 20-position terminal block. Additionally, install leakage resistors where diagnostic functions require them. Finally, apply power and verify channel status through the diagnostic indicators. Ensure proper grounding to preserve isolation integrity.

Packaging List

• 1x Honeywell TC-IDX081 Module

• 1x TC-TBNH 20-Position Terminal Block

• 1x Installation Guide

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FAQ

Q1: What diagnostic functions does the TC-IDX081 support?
A: It detects open wire, loss of power, and current leak conditions with a 1.5mA minimum threshold.

Q2: How many input points does this module offer?
A: It provides 8 points configured as 4 points per common group.

Q3: What is the nominal input current at 60Hz?
A: Nominal input current is 13mA at 60Hz and 11mA at 50Hz.

Q4: Which terminal block does the TC-IDX081 use?
A: It uses the TC-TBNH 20-position terminal block.

Q5: What leakage resistor value suits a 120VAC supply?
A: A 120VAC ±15% supply requires a 51KΩ, ½W, 5% leakage resistor.