Honeywell TC-IDK161 16-Point Isolated AC Input Module

Product Description

The TC-IDK161 (TK-IDK161) is a high-density discrete input interface engineered for Honeywell industrial control architectures. This module provides 16 individual sensing points designed to monitor 120 VAC field signals. A critical feature of this hardware is its total channel-to-channel isolation, which ensures that each input is electrically independent. This prevents ground loops and protects the controller backplane from field-side electrical transients, making it an essential component for high-reliability process environments.

Technical Specifications

• Model Identification: TC-IDK161

• Part Number: TK-IDK161

• Input Configuration: 16 Individually Isolated Channels

• Nominal Operating Voltage: 120 VAC

• On-State Voltage Range: 79 to 132 VAC (47-63 Hz)

• Off-State Threshold: 20 VAC (Maximum)

• Input Impedance: 11 KΩ @ 60 Hz

• Signal Response Time: Programmable Off-to-On (1ms/2ms) and On-to-Off (9ms/18ms)

• Isolation Rating: 2546 VDC (Channel-to-Channel and User-to-System)

• Power Dissipation: 4.9 W

• Backplane Current Draw: 0.125A @ 5VDC / 0.003A @ 24VDC

• Physical Weight: 0.2 kg

• Required Interface: TC-TBCH 36-position terminal block

Application and System Integration

The TC-IDK161 (TK-IDK161) is typically deployed in motor control centers (MCCs) and power distribution monitoring where diverse AC signals must be sensed. Because each of the 16 points is isolated, engineers can wire inputs from different phases or power sources into the same module without risk of cross-talk or short circuits. This density significantly reduces the required footprint in the I/O cabinet while adhering to IEC Type 1+ input compatibility standards.

Frequently Asked Questions

• How does the programmable filter time affect performance?

  The user can adjust the delay times to balance between high-speed signal capture and the rejection of electrical noise or contact bounce commonly found on AC limit switches.

• Is the terminal block included with the module?

  The TC-TBCH 36-position block is the recommended connection interface and is usually sourced separately to facilitate pre-wiring of the control cabinet.