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- Allen Bradley
- 1769-IQ16K
- CompactLogix I/O Module
- USA
- 118 mm × 35 mm × 87 mm
- 0.32kg
- Xiamen, China
- New & In Stock
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Technical Report: 1769-IQ16K Compact I/O 16-Point 24V DC Digital Input Module (Conformal Coated Version)
1. Product Overview
The 1769-IQ16K is a Compact I/O 16-point 24V DC digital input module designed for industrial automation systems requiring reliable acquisition of discrete DC signals.
It is a conformal-coated version of the standard 1769-IQ16, offering improved protection against humidity, dust, and corrosive industrial environments. The module is used in CompactLogix and Compact I/O architectures to interface field devices such as sensors, switches, relays, and control contacts.
This version is often selected for harsh environments where additional protection of electronic circuits is required.
2. Brand and Series Information
Brand: Industrial automation control platform ecosystem
Series: 1769 Compact I/O Series
Product Family: DC Digital Input Modules
Module Type: 16-Point 24V DC Sink/Source Input Module (Conformal Coated Version)
3. Product Function Description
The 1769-IQ16K is designed to convert 24V DC field signals into PLC-compatible digital logic states.
Core functions include:
- 16 DC digital input channels
- Sink/source compatible wiring design
- Division into two input groups (8 points each)
- Signal conversion from field devices to PLC logic
- LED status indication per input channel
- Electrical isolation between field inputs and backplane
- Conformal coating for environmental protection
It is widely used in industrial environments requiring enhanced durability and signal reliability.
4. Technical Parameters
Electrical Specifications
| Parameter | Value |
|---|---|
| Number of Inputs | 16 channels ([turn0search1]) |
| Input Voltage Range | 10–30V DC ([turn0search1]) |
| Nominal Voltage | 24V DC |
| Off-state Voltage | ≤5V DC ([based on 1769-IQ16 platform spec]) |
| On-state Voltage | ≥10V DC |
| Input Type | Sink/Source DC digital input |
| Backplane Current | ~115 mA @ 5.1V DC ([derived from IQ16 platform spec]) |
| Power Dissipation | ~3.5 W |
| Input Delay | ~8 ms ON/OFF |
Isolation & Protection
| Parameter | Value |
|---|---|
| Isolation Voltage | 1200V AC / 1697V DC (1s test) ([turn0search1]) |
| Isolation Type | Input-to-bus reinforced isolation |
| Working Voltage | 30V DC max |
| Protection Feature | Conformal coating (humidity & corrosion resistance) |
| EMC Performance | Industrial noise immunity |
Performance Characteristics
| Parameter | Value |
|---|---|
| Response Time | ~8 ms typical |
| Input Grouping | 2 groups of 8 channels |
| Signal Compatibility | Industrial 24V DC switching devices |
| Diagnostic Function | LED per channel |
| Reliability Level | High industrial duty cycle |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions (H × W × D) | 118 mm × 35 mm × 87 mm |
| Height with Tabs | 138 mm |
| Width | 35 mm |
| Depth | 87 mm |
| Weight | ~0.28–0.32 kg |
| Mounting Type | DIN rail / panel mount |
| Slot Width | 1 slot |
| Terminal Type | Removable terminal block |
Environmental Specifications
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% – 95% non-condensing |
| Vibration Resistance | Industrial IEC standard |
| Shock Resistance | Up to 15G |
| Environmental Protection | Conformal coating for harsh environments |
5. Product Advantages
1. Enhanced Environmental Protection
The “K” version uses conformal coating, improving resistance to humidity, dust, and chemical contamination.
2. Stable 24V DC Signal Handling
Supports standard industrial DC control signals with reliable switching detection.
3. High Channel Density
16 input points in a compact single-slot module reduce wiring and cabinet space.
4. Strong Electrical Isolation
High dielectric strength improves system safety and signal stability.
5. Easy Maintenance
LED indicators simplify troubleshooting and reduce downtime.
6. Proven Industrial Design
Based on widely deployed 1769 IQ platform architecture.
6. Application Areas
The 1769-IQ16K is widely used in:
- Industrial automation control systems
- Food and beverage production lines (humid environments)
- Water and wastewater treatment plants
- Chemical processing systems
- Outdoor control panels
- Conveyor and packaging systems
- Pump and valve monitoring systems
- Motor control and MCC auxiliary circuits
It is particularly suitable for environments requiring moisture or corrosion resistance.
7. Recommended Models (Same Series / Related Modules)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-IQ16 | Standard DC Input | 16-point 24V DC input | General automation |
| 1769-IQ32 | High-density input | 32-point DC input | Large systems |
| 1769-IQ16F | Fast DC input | High-speed response input | Fast signal detection |
| 1769-IA16K | AC input module | 120V AC input | AC control systems |
| 1769-IM12 | 240V AC input | High-voltage AC input | MCC monitoring |
8. Other Popular Models (Same Platform – Widely Used)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-L33ER | PLC Controller | EtherNet/IP CPU | Machine automation |
| 1769-L36ERM | Motion PLC | High-performance CPU | Advanced control |
| 1769-AENTR | Ethernet Adapter | Dual-port communication | Distributed I/O |
| 1769-SDN | DeviceNet Scanner | Fieldbus integration | Legacy systems |
| 1769-ASCII | Serial Module | ASCII protocol | Barcode / serial devices |
9. System Role Summary
The 1769-IQ16K serves as a ruggedized digital input module in Compact I/O systems. It provides reliable acquisition of 24V DC discrete signals in harsh environments where standard modules may suffer from humidity or contamination effects.
Its conformal coating makes it suitable for long-term deployment in demanding industrial conditions.
10. Summary
The 1769-IQ16K is a 16-point 24V DC digital input module with enhanced environmental protection. It combines stable signal acquisition, high channel density, strong isolation, and improved durability.
Its key strengths include conformal coating protection, reliable DC signal handling, compact design, and suitability for harsh industrial environments.