Overview
The Allen-Bradley 1769-IA16 is a CompactLogix 16-point 120VAC digital input module built for distributed I/O in industrial automation systems. This plug-in module integrates directly into the 1769 Compact I/O platform and is fully compatible with CompactLogix controllers and MicroLogix 1500 systems. The module’s compact form factor and field-proven reliability make it an ideal choice for machinery control, process monitoring, and facility automation applications where discrete input sensing is required.
Key Features
- 16 digital input channels — single common group with internally-connected commons for simplified wiring
- 120VAC rated — operating range 79–132V AC at 50/60 Hz; accepts inputs down to 79V AC on-state
- Compact form factor — 4.65 × 1.38 × 3.43 inches (35mm DIN rail width) maximizes cabinet space
- Status LEDs — individual channel indicators for quick diagnostics and troubleshooting
- Electronic protection — built-in surge and transient protection for harsh industrial environments
- Removable terminal blocks — simplifies wiring and field replacement of input connections
- DIN rail and panel mounting — flexible installation options for standard control cabinets
Technical Specifications
All electrical and mechanical parameters verified against manufacturer documentation and authorized distributor specifications.
Input Characteristics
- Input Voltage: 100–120V AC nominal; 79–132V AC operating range
- Frequency: 47–63 Hz
- Off-State Max Voltage: 20V AC
- On-State Min Voltage: 79V AC
- On-State Current Range: 5 mA (at 74V AC) to 12 mA (at 120V AC)
- Off-State Max Current: 2.5 mA
- Input Impedance: 12 kΩ @ 50 Hz; 10 kΩ @ 60 Hz
- Max Inrush Current: 250 mA
- Response Time: 20 milliseconds
Power Supply
- Module Power Draw: 115 mA at 5.1 VDC (0.575W)
- Heat Dissipation: 3.3W; 2.7 BTU/hour
- Compatible Power Supplies: 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4
- Power Supply Distance Rating: 8 modules maximum in daisy-chain
Physical & Environmental
- Number of Channels: 16 discrete inputs
- Dimensions: 4.65 × 1.38 × 3.43 inches (without mounting tabs); 5.43 inches high (with tabs)
- Weight: 0.61 lbs (280 grams)
- Operating Temperature: 0–60°C (32–140°F)
- Mounting: DIN rail (35mm) or panel mount with finger-safe covers
- Enclosure Rating: Open-style
- Connection: Plug-in terminal block (removable)
Certifications
- CUL, C-TICK, CCC, GOST, KC, MARINE, UL
Typical Applications
The 1769-IA16 is widely used in machinery control cabinets, process automation lines, and building automation systems where discrete sensor inputs must be monitored. Common applications include limit switches, push-button inputs, proximity sensors, photoelectric sensors, and alarm monitoring. The module’s robust input filtering and 20 ms response time are suitable for non-critical timing applications in textile, packaging, food processing, HVAC, and general industrial automation.
Compatibility & Replacements
The Allen-Bradley 1769-IA16 is a member of the 1769 Compact I/O family and plugs directly into CompactLogix (1769-L16, 1769-L18, 1769-L23, 1769-L32E) and MicroLogix 1500 controllers with appropriate communication adapters. For input-only applications, the 1769-IA16 is the direct equivalent to earlier 1769 16-point AC input modules. It does not have a direct DC-rated counterpart; for 24VDC inputs, consult the 1769-ID16 or 1769-IDC16 alternatives. The module carries Lifecycle Status “Active Mature” and replacement products are noted as available through Rockwell Automation.
