Description

Allen Bradley 1769-IA16 CompactLogix Input Module

Configured for discrete signal acquisition in industrial automation networks, the Allen Bradley 1769-IA16 (1769-IA16 Input Module) provides direct physical and electrical execution. Operating as a robust hardware component, this unit acquires up to 16 AC input signals, processing industrial voltage levels effectively while ensuring system integrity across controller backplanes.

Hardware Specifications

Parameter	Specification
Model	1769-IA16
Brand	Allen Bradley
Origin	United States (Standard Factory Origin)
Weight	0.75 lbs (0.34 kg)
Dimensions	Standard CompactLogix 1769 Form Factor
Operating Temp	0 deg C to 60 deg C (32 deg F to 140 deg F)
Power Consumption	115 mA at 5.1 VDC (Backplane current draw)
Voltage Category	100/120V AC
Operating Voltage Range	79-132V AC
Operating Frequency	47-63 Hz
Number of Inputs	16 Inputs (Internally Connected Commons)
Input Delays	20 ms On / 20 ms Off
Maximum Heat Dissipation	3.3 Watts
Maximum Inrush Current	250 mA

Backplane Bus Communication Velocity and Firmware Flash Compatibility

The module integrates seamlessly into the CompactLogix system architecture, utilizing high-speed backplane bus communication to transfer acquired data packets directly to the central processor. Furthermore, firmware flash compatibility ensures that the hardware can receive internal code updates via RSLogix 5000 or Studio 5000 environment toolsets without requiring physical component replacements. Consequently, the internal scanning mechanism operates deterministically, matching the backplane cycle to maintain tight tolerances on input state detection across all sixteen channels simultaneously.

Frequently Asked Questions

Q: Does the 1769-IA16 module support live insertion and removal under power (hot-swapping)?

A: No. Users must disconnect power from the module and the chassis backplane before installing or removing the 1769-IA16 to prevent electrical arcing and backplane bus corruption.

Q: How is power supplied to the internal logic circuitry of this input module?

A: The module draws its internal logic power directly from the 5.1 VDC and 24 VDC rails of the CompactLogix system backplane, consuming approximately 115 mA at 5.1 VDC.

Field Installation Guidelines

Ensure that the CompactLogix system power is completely isolated before mounting the 1769-IA16 module onto the DIN rail or panel mount. Secure the module latch firmly to lock it into position adjacent to the controller or previous I/O module. Subsequently, connect field wiring to the removable terminal block (RTB), ensuring that wire stripping lengths comply with manufacturer specifications. Verify that AC supply lines fall strictly within the 79-132V AC operating voltage range before energizing the circuit. Finally, ground the system chassis and enclosure in accordance with local electrical codes to mitigate electromagnetic interference (EMI) and safeguard against transient surge voltages.

Specifications

• Brand: Allen Bradley

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems