Honeywell Automation TC-IDK161 120V AC Digital Input Unit

Availability: 20 left in stock

Product Overview The TC-IDK161 is an authoritative 16-channel isolated digital input module engineered for Honeywell Experion PKS and TDC 3000 systems. It...

SKU: TC-IDK161

Manufacturer: Honeywell
Product No.: TC-IDK161
Product Type: Isolated Digital Input Module
Product Origin: USA
Payment:T/T, Western Union
Weight: 200g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Overview

The TC-IDK161 is an authoritative 16-channel isolated digital input module engineered for Honeywell Experion PKS and TDC 3000 systems. It serves as a mechanical necessity for acquiring discrete high-voltage AC signals (120V AC) from field devices such as limit switches, push buttons, and relay contacts. Unlike standard 24VDC modules, the TC-IDK161 provides robust galvanic isolation for each channel, ensuring that electrical noise or transients in the field do not compromise the integrity of the DCS backplane. This makes it a trustworthy choice for mission-critical monitoring in refineries, chemical plants, and power generation facilities where high-density AC signal acquisition is required.

Detailed Technical Specifications

Attribute	Details
Manufacturer	Honeywell
Model Number	TC-IDK161
Product Type	Isolated AC Digital Input Module
System Compatibility	Honeywell Experion PKS, TDC 3000
Number of Channels	16 Isolated Channels
Input Voltage Rating	120 VAC (Supports 50/60 Hz)
Current Consumption (Backplane)	125 mA @ 5.1 VDC; 3 mA @ 24 VDC
Field Input Current	15 mA per channel
Isolation	Galvanic Isolation (Channel-to-System)
Update Rate	Fast response for real-time discrete monitoring
Operating Temperature	0 °C to +60 °C (32 °F to 140 °F)
Relative Humidity	5% to 95% Non-condensing
Weight	0.43 lbs (0.20 kg)
Certifications	CE, UL, CSA Industrial Compliance

Installation and Engineering Application

Chassis Integration: Align the TC-IDK161 with the guide rails in the I/O chassis. Press firmly until the module is fully seated against the backplane. Authoritative seating is required to maintain the 125mA draw from the 5.1VDC logic supply.
Wiring Requirements: Due to the 120VAC input level, ensure that field wiring is routed according to local safety codes for high-voltage AC. Use appropriate cable segregation to prevent AC noise from bleeding into sensitive DC analog loops.
Thermal Management: The module dissipates heat based on the number of active 120VAC channels. In high-density cabinets, maintaining 0–60 °C ambient airflow is a mechanical necessity for long-term component reliability.
Redundancy Configuration: For safety-critical interlocks, deploy the TC-IDK161 in redundant pairs within the Experion environment. This ensures that even if one AC input card fails, the status of field switches remains visible to the controller.

Technical FAQ

How does the TC-IDK161 differ from the TC-IDD321?

While both are digital input modules, the TC-IDK161 is specifically designed for 120VAC signals with channel-to-system isolation, whereas the TC-IDD321 typically handles 24VDC signals. The TC-IDK161 is the required expertise when interfacing directly with AC-powered switchgear without the need for interposing relays.

Can this module handle 50Hz and 60Hz systems?

Yes. The TC-IDK161 circuitry is designed to sense 120VAC at both 50Hz and 60Hz frequencies, providing flexible deployment for global industrial projects.

What is the significance of the 125mA @ 5.1VDC specification?

This defines the logic power required from the chassis backplane. System engineers must include this in their power budget calculations to ensure the chassis power supply is not overloaded, which is critical for trustworthy system performance.

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