Overview
The Honeywell TC-IDJ161 is a 16-point isolated digital input module designed to receive 24 VDC signals from field devices in industrial control systems. It supports IEC Type 1+ input characteristics and provides individual channel isolation, as well as user-to-system isolation tested at 2546 VDC. Furthermore, programmable input delays allow the module to accommodate different signal response requirements.
Key Features
- 16 isolated input points: Each input channel has individual isolation to separate field signals.
- 24 VDC input: Accepts on-state voltages from 10 to 30 VDC.
- IEC Type 1+ compliance: Supports the specified industrial digital input characteristics.
- Electrical isolation: Channel-to-channel and user-to-system isolation tested at 2546 VDC.
- Programmable input delays: Provides selectable ON/OFF delay settings for different signal response requirements.
- Terminal block connection: Compatible with TC-TBCH terminal blocks.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | TC-IDJ161 |
| Brand | Honeywell |
| Product Type | Isolated Digital Input Module |
| Number of Input Points | 16 |
| Input Signal | 24 VDC |
| On-State Voltage Range | 10-30 VDC |
| Off-State Voltage | 5 VDC maximum |
| Input Compatibility | IEC Type 1+ |
| Input Impedance | 31 kOhm maximum at 60 Hz |
| On-State Current | 2.0 mA minimum at 10 VDC |
| Off-State Current | 1.5 mA maximum |
| Channel Isolation | 2546 VDC, 100% tested |
| User-to-System Isolation | 2546 VDC, 100% tested |
| Short/Inrush Current | 250 mA peak |
| Inrush Current Decay | Less than 37% within 22 ms, without activation |
| Programmable Input Delay | 1 ms, 2 ms, 9 ms, 18 ms |
| Power Dissipation | 5.0 W maximum |
| Compatible Terminal Block | TC-TBCH |
Input Signal Characteristics
The TC-IDJ161 accepts 24 VDC field signals within a 10-30 VDC on-state voltage range. An input voltage of 5 VDC or lower represents the specified off-state condition. The module also defines minimum on-state current and maximum off-state current requirements, which help establish the electrical conditions for reliable input state detection.
Isolation and Input Protection
The module provides channel-to-channel and user-to-system isolation, with both isolation categories tested at 2546 VDC. In addition, its short-circuit and inrush current characteristics specify a peak current of 250 mA, decaying to less than 37% within 22 ms without activating the input. These ratings are relevant when checking field wiring and input circuit conditions.
Input Delay Configuration
The TC-IDJ161 supports programmable ON/OFF input delays of 1 ms, 2 ms, 9 ms, and 18 ms. Therefore, users can select the required delay according to the response characteristics of connected field signals. The selected setting affects how quickly the module recognizes an input state change.
Terminal Block Connection
The module is compatible with Honeywell TC-TBCH terminal blocks. Furthermore, the terminal block selection should be checked against the actual module installation and wiring configuration before replacement or commissioning.
Frequently Asked Questions
Q: How many digital input channels does the Honeywell TC-IDJ161 provide?
A: It provides 16 individually isolated digital input points for 24 VDC field signals.
Q: What input delay settings are available?
A: The module supports programmable ON/OFF delay settings of 1 ms, 2 ms, 9 ms, and 18 ms.
Q: Which terminal block is compatible with the TC-IDJ161?
A: The specified compatible terminal block is the TC-TBCH. Check the installed terminal block configuration before ordering a replacement.
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