The Allen-Bradley 1769-IA16 provides high-density AC signal detection for industrial control systems. This module features 16 digital input channels designed to monitor field devices operating on 100/120V AC power, such as limit switches, push buttons, and motor starter auxiliary contacts. Fully compatible with CompactLogix controllers and MicroLogix 1500 systems, the 1769-IA16 enables seamless integration of AC field signals into your Logix architecture. We supply this unit as 100% Brand New original hardware in factory-sealed packaging.
The 1769-IA16 utilizes robust circuitry to filter industrial noise and provide clean digital transitions to the controller backplane.
| Parameter | Specification Detail |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Catalog Number | 1769-IA16 |
| Number of Inputs | 16 Channels |
| Voltage Category | 100/120V AC |
| Operating Voltage Range | 79–132V AC |
| Input Current (Nominal) | 10 mA @ 120V AC |
| Input Delay (Typical) | 8 ms to 10 ms |
| Isolation Voltage | 750V DC (Field side to System side) |
| Backplane Current Draw | 115 mA @ 5.1V DC |
| Operating Temperature | 0°C to +60°C (32°F to +140°F) |
| Certifications | UL, CE, cULus, Class I Div 2 |
The 1769-IA16 solves common integration hurdles in legacy and modern factory environments where AC control circuits remain standard.
Simplified Cabinet Wiring: The 16 input channels share internally connected commons. This reduces the number of terminal terminations required, allowing for a cleaner and more organized control panel layout.
Superior Noise Rejection: The module incorporates an inherent 8–10 ms hardware delay. This delay effectively filters out high-frequency transients and contact bounce commonly found in mechanical AC switches, preventing false triggers in the PLC logic.
High-Density Rack Efficiency: At only 35 mm wide, the 1769-IA16 packs 16 AC points into a slim profile. This maximizes the utilization of DIN rail space, especially in retrofits where cabinet volume is limited.
Removable Terminal Block (RTB): The integrated RTB allows for "pre-wiring" before module installation. During maintenance, technicians remove the entire block without disconnecting individual wires, which slashes Mean Time to Repair (MTTR) and prevents wiring errors.
Rugged Isolation Barrier: The 750V DC isolation barrier protects the expensive controller CPU and backplane from field-side electrical surges. This ensures the longevity of the entire automation rack even in harsh electrical environments.
Can the 1769-IA16 detect DC signals?
No. The 1769-IA16 specifically monitors AC voltages between 79V and 132V. For 24V DC applications, you must use a DC input module such as the 1769-IB16 or 1769-IQ16.
Does this module support individual isolation for each channel?
The 1769-IA16 features group isolation. The 16 inputs share common return points. If your application requires point-to-point isolation, you should evaluate specialty isolated modules.
Is the 1769-IA16 compatible with the 1769-AENTR Ethernet adapter?
Yes. The 1769-IA16 functions perfectly in remote I/O configurations using the 1769-AENTR or 1769-ADN DeviceNet adapters.
What is the significance of the Status LEDs on the front panel?
Each of the 16 channels has a dedicated LED. These indicators provide an immediate visual diagnostic, allowing maintenance staff to verify field signal presence without using a voltmeter.
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