Allen Bradley 1769-IA16 digital input

Product Description

The 1769-IA16 (1769-IA16) is a high-density AC digital input module designed for Allen-Bradley CompactLogix and MicroLogix 1500 controller systems. It provides 16 points of 100/120V AC interfacing, organized in a single group with internally connected commons to simplify field wiring. Engineered for robust industrial performance, this module features integrated hardware filtering and optical isolation to ensure reliable signal detection from limit switches, pushbuttons, and other AC field devices even in high-interference environments.

Technical Specifications

• Model Number: 1769-IA16 / 1769-IA16K (Conformal Coated)

• Number of Inputs: 16 Points (1 Group)

• Voltage Category: 100/120V AC

• Operating Voltage Range: 79V to 132V AC (47 to 63 Hz)

• Signal Delay (On/Off): 20 ms / 20 ms

• On-State Voltage (Min): 79V AC

• On-State Current: 5 mA @ 74V AC (Min) to 12 mA @ 120V AC (Max)

• Off-State Voltage (Max): 20V AC

• Input Impedance: 12 kΩ @ 50 Hz / 10 kΩ @ 60 Hz

• Isolation Voltage: 132V AC working voltage (Verified at 1517V AC / 2145V DC)

• Current Draw: 115 mA @ 5.1V DC

• Power Supply Distance Rating: 8 Modules from Power Supply

• Dimensions: 118 x 35 x 87 mm (4.65 x 1.38 x 3.43 in.)

Key Engineering Features

The 1769-IA16 (1769-IA16) is optimized for reliability and density in standard industrial control panels:

• Integrated Noise Immunity: A built-in 20 ms filter delay on both the "on" and "off" transitions helps eliminate false triggering caused by contact bounce or electrical line noise.

• High-Density Form Factor: The 35mm slot width allows for 16 high-voltage inputs in a compact space, significantly reducing the total DIN rail length required for the I/O rack.

• Inrush Current Management: While the module supports a maximum inrush of 250 mA, it is compatible with external current-limiting resistors (e.g., 6.8 kΩ) to reduce inrush to 35 mA for sensitive circuit protection.

• Flexible Mounting: Designed for both horizontal and vertical orientations using standard DIN rail or direct panel mounting tabs.

• Field Serviceability: Utilizes the 1769-RTBN18 removable terminal block, allowing for module replacement without disturbing the field wiring harness.