The 1769-IA16 is a 16-channel AC discrete input module designed for Allen-Bradley CompactLogix and MicroLogix 1500 control platforms. It provides an interface between field AC devices and the controller, allowing industrial equipment status signals to be monitored through standard 120V AC input circuits.
Commonly installed in CompactLogix expansion assemblies, the module is used for collecting ON/OFF signals from industrial switches, push buttons, limit switches, proximity devices, and other AC-powered field equipment. Its compact 1769 form factor allows additional digital input points to be added without replacing the existing controller hardware.
The 1769-IA16 is frequently sourced for automation maintenance, machine upgrades, and spare inventory management where installed Allen-Bradley CompactLogix systems require compatible AC input hardware. It is widely found in manufacturing equipment, packaging machinery, material handling systems, and general industrial control applications.
Technical Specification
| Parameter | Details |
|---|---|
| Brand | Allen-Bradley |
| Series | CompactLogix 1769 I/O |
| Catalog Number | 1769-IA16 |
| Product Type | AC Digital Input Module |
| Input Points | 16 points |
| Input Voltage | 120V AC |
| Voltage Range | 79…132V AC |
| Input Frequency | 47…63 Hz |
| Input Current | 5 mA at 120V AC typical |
| Input Delay Time | Configurable ON/OFF delay |
| Signal Type | Discrete AC input |
| Isolation | Group isolation |
| Backplane Current Consumption | 100 mA at 5V DC |
| Mounting Method | DIN rail or panel mounting |
| Terminal Connection | Removable terminal block |
| Module Width | Compact 1769 I/O design |
| Compatible Controllers | CompactLogix, MicroLogix 1500 |
Field Signal Connection
The 1769-IA16 provides sixteen independent AC input channels for monitoring discrete field signals. Typical input devices connected to this module include:
| Field Device | Typical Use |
|---|---|
| Push buttons | Operator command signals |
| Limit switches | Position detection |
| Selector switches | Mode selection |
| AC proximity sensors | Equipment status monitoring |
| Auxiliary contacts | Motor and starter feedback |
By converting external AC signals into controller-readable input states, the module allows CompactLogix processors to monitor machine conditions and execute programmed operations.
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Related 1769 Digital I/O Modules
The CompactLogix 1769 family includes various digital input and output modules for different voltage requirements and control applications.
| Model | Description |
|---|---|
| 1769-IQ16 | 16 Point DC Digital Input Module |
| 1769-IA8I | 8 Point AC Input Module |
| 1769-OB16 | 16 Point DC Output Module |
| 1769-OW8 | 8 Point Relay Output Module |
| 1769-IQ32 | 32 Point DC Input Module |
The 1769-IA16 is commonly used in:
- CompactLogix control panels
- Industrial machine retrofits
- Production line monitoring systems
- Packaging and assembly equipment
- Replacement of existing 1769 AC input modules
- Spare parts inventory for installed automation systems
For plants maintaining Allen-Bradley CompactLogix installations, this module provides a direct hardware option when additional or replacement AC input points are required.
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