Honeywell TC-IDX161 16-Point Diagnostic Discrete Input Module

Honeywell TC-IDX161 10-30 VDC, 16-Point Diagnostic Discrete Input Module

Key Technical Specifications

• Brand: Honeywell
• Model: TC-IDX161
• Category: Diagnostic Discrete Input Module
• Number of Points: 16 points with 4 points per common
• Nominal Input Voltage: 24 VDC
• On-State Voltage Range: 10–30 VDC
• Input Compatibility: IEC Type 1+
• Off-State Voltage (Maximum): 5 VDC
• On-State Current (Minimum): 2.0 mA at 10 VDC
• Off-State Current (Maximum): 1.5 mA
• Input Impedance (Maximum): 3.7 KΩ at 10 VDC
• Short/Inrush Current: 250 mA peak, decaying to less than 37% in 22 ms without activation
• Power Dissipation: 5.8 W maximum
• Isolation Voltage – Channel to Channel: 100% tested at 2546 VDC for 1 second
• Isolation Voltage – User to System: 100% tested at 2546 VDC for 1 second
• Connection Terminal Blocks: TC-TBCH, 36-position terminal block

Diagnostic Functions and Leakage Resistor Configuration

• The module offers two software configurable diagnostic functions: open wire detection and change of state monitoring.
• Open wire diagnostics help you find broken field wiring before a machine stops.
• Change of state diagnostics track unexpected input transitions for faster troubleshooting.
• Current leakage in the off state stays at 1.21 mA maximum for dependable detection.
• Use the formula Rleak Maximum = (P/S Voltage - 4.6 VDC) / 1.21 mA to size the leakage resistor.
• Use the formula Rleak Minimum = (P/S Voltage – 5 VDC) / 1.5 mA to set the lower resistor bound.
• For a 12 VDC power supply at +/-5%, choose a 5.23 KΩ, ¼ W, 2% leakage resistor.
• For a 24 VDC power supply at +/-5%, choose a 14.3 KΩ, ¼ W, 2% leakage resistor.
• P/S refers to the field side power supply in these calculations.

Input Signal Delay Settings

• Off-to-on delay is programmable at 0 ms, 1 ms, or 2 ms.
• On-to-off delay is programmable at 0 ms, 1 ms, 9 ms, or 18 ms.
• These delay options let you filter noise and match fast or slow machine cycles.
• Shorter delays suit high-speed sorting and registration tasks.
• Longer delays reduce false triggers from contact bounce and electrical noise.

Installation Guide

• Mount the TC-IDX161 on a compatible Honeywell backplane or chassis.
• Use the TC-TBCH 36-position terminal block for all field wiring connections.
• Wire each group of four input points to its common terminal.
• Confirm the on-state voltage range of 10–30 VDC before you power up field devices.
• Add the correct leakage resistor when you enable open wire diagnostics.
• Set the programmable input delay times to match your control loop needs.
• Keep the off-state voltage below 5 VDC to prevent unintended channel activation.
• Verify isolation integrity with a 2546 VDC test after installation if required.

Package List

• 1 x Honeywell TC-IDX161 10-30 VDC 16-Point Diagnostic Discrete Input Module
• 1 x TC-TBCH 36-position terminal block
• 1 x Quick start guide
• Protective packaging for safe transport

Shipping and Support

• We ship via FedEx, UPS, and DHL to most international destinations.
• Orders leave our warehouse within 5 days after payment confirmation.
• We keep this module in stock as brand new original stock.
• We support 30-day returns for eligible orders.
• Contact us for bulk orders or special logistics requests.

FAQ

• Q: What diagnostic functions does the Honeywell TC-IDX161 support?
  A: It supports open wire detection and change of state monitoring, both software configurable.
• Q: How many points does this module have and how are they grouped?
  A: It has 16 points arranged as 4 points per common.
• Q: What is the off-state leakage current?
  A: The off-state current leakage is 1.21 mA maximum.
• Q: What leakage resistor should I use for a 24 VDC supply?
  A: Use a 14.3 KΩ, ¼ W, 2% resistor for a 24 VDC +/-5% power supply.
• Q: Can I adjust the input signal delay?
  A: Yes, off-to-on delay is 0, 1, or 2 ms, and on-to-off delay is 0, 1, 9, or 18 ms.
• Q: What isolation voltage does the TC-IDX161 provide?
  A: Both channel-to-channel and user-to-system isolation are 100% tested at 2546 VDC for 1 second.
• Q: What terminal block does this module use?
  A: It uses the TC-TBCH 36-position terminal block.
• Q: Is this module in stock and how fast do you ship?
  A: Yes, we have brand new original stock and ship within 5 days via DHL, FedEx, or UPS.
• Q: What is the return policy?
  A: We support 30-day returns for eligible orders.

Contact Information

Inquiries: sales@nex-auto.com or +86 153 9242 9628

Partner NexAuto Technology Limited : https://www.nex-auto.com/