Product Details
The Honeywell TC-IDD321 is a 32-channel discrete digital input module engineered for Honeywell Experion LS control systems. Operating at a nominal input voltage of 24 VDC, it conditions high-density binary signals from field switches, proximity sensors, and contact points across two isolated 16-point groups.
Input Electrical Limits and IEC Compliance
The module complies with IEC Type 1+ input signal standards to ensure broad field instrument compatibility. It establishes a minimum on-state current of 2 mA to confirm active signal states, while maintaining an off-state threshold capped at a maximum 5 V and 1.5 mA leakage current to prevent false switching.
Circuit Isolation and Wiring Interfacing
Built to safeguard system electronics from electrical noise and field transients, the TC-IDD321 features galvanic isolation tested at 1500 VDC for 1 second both between input channels and between field-side user circuits and the system backplane. Field wiring connects through a 36-position terminal block (model TC-TBNH), and total power dissipation is rated at a maximum of 6.1 W.
| Parameter | Specification |
|---|---|
| Model | TC-IDD321 |
| Brand | Honeywell |
| System | Experion LS |
| Product Type | Digital Input Module |
| Number of Inputs | 32 (16 points per common) |
| Nominal Input Voltage | 24 VDC |
| On-State Current (Minimum) | 2 mA |
| Off-State Voltage (Maximum) | 5 V |
| Off-State Current (Maximum) | 1.5 mA |
| Input Standard Compatibility | IEC Type 1+ |
| Isolation Voltage (Channel to Channel) | 1500 VDC for 1 s |
| Isolation Voltage (User to System) | 1500 VDC for 1 s |
| Power Dissipation | 6.1 W max |
| Connection Terminal Blocks | TC-TBNH (36-position terminal block) |
| Shipping Weight | 2 kg |
Frequently Asked Questions
Q: How are the 32 input channels on the TC-IDD321 grouped?
A: The 32 digital input channels are arranged into two groups of 16 points per common terminal.
Q: What terminal block is required for field wiring on the TC-IDD321?
A: Field wiring connects via the TC-TBNH 36-position terminal block.
Q: What level of electrical isolation does this module provide?
A: The module provides 1500 VDC isolation for 1 second across both channel-to-channel and user-to-system circuit boundaries.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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