Allen-Bradley 1769-IA16 CompactLogix 16-Point AC Input Module
The Allen-Bradley 1769-IA16, also cataloged as the 1769-IA16 Digital Input Module, operates as a dedicated hardware component for 120 VAC discrete field signal acquisition and backplane bridging within CompactLogix control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-IA16 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.75 lbs (0.34 kg) |
| Dimensions | Standard CompactLogix 1769 Module Form Factor |
| Operating Temp | 0 to 60 deg C (32 to 140 deg F) |
| Power Consumption | 115 mA @ 5.1 VDC backplane draw (3.3 W heat dissipation) |
| Input Channels | 16 AC Discrete Inputs (1 Group of 16) |
| Operating Voltage Range | 79 to 132 VAC |
| Operating Frequency | 47 to 63 Hz |
| On / Off Input Delay | 20 ms / 20 ms |
| Maximum Inrush Current | 250 mA |
Backplane Bus Communication Velocity and EtherNet/IP Performance
The 1769-IA16 module interfaces directly with the CompactLogix local backplane to execute high-density 120 VAC digital input state processing. Input channel data is filtered through an internal RC network with deterministic 20 ms hardware delay profiles for both turn-on and turn-off transitions. Backplane bus communication velocity and firmware flash compatibility allow high-density I/O density scaling while isolating transient line spikes across the system bus.
Frequently Asked Questions
Q: How are the commons arranged on the 1769-IA16 AC input module?
A: The module features 16 inputs organized in a single group with internally connected commons, simplifying field wiring to a single AC neutral return line.
Q: What are the input signal voltage limits for proper ON and OFF state detection?
A: The module operates within an AC voltage range of 79 to 132 VAC at 47 to 63 Hz. Inputs below the minimum threshold will register as an OFF state, while voltage levels within range drive an ON state signal.
Q: What is the backplane current draw and power consumption for this module?
A: The 1769-IA16 draws 115 mA from the 5.1 VDC backplane bus and dissipates a maximum of 3.3 Watts of heat during full operation.
Field Installation Guidelines
- Mount the 1769-IA16 on a grounded DIN rail or attach directly to an enclosure subpanel using M4 mounting hardware. Verify that the DIN rail maintains low impedance to functional earth (FE).
- Maintain a minimum clearance of 50 mm (2 inches) above and below the module chassis to support natural thermal convection and heat dissipation.
- Route 120 VAC field signal conductors through separate wiring troughs away from low-voltage DC lines and communication cables to avoid noise coupling.
- Wire field devices to the removable terminal block using 22 to 14 AWG solid or 22 to 16 AWG stranded copper wire. Secure terminal connections cleanly.
- Align side bus connectors with adjacent 1769 modules and slide the bus lever into the locked position to complete backplane bus continuity before applying system power.
Allen-Bradley 1769-IA16 CompactLogix 16-Point AC Input Module
Allen-Bradley 1769-IA16 CompactLogix 16-Point AC Input Module
The Allen-Bradley 1769-IA16, also cataloged as the 1769-IA16 Digital Input Module, operates as a dedicated hardware component for 120 VAC discrete field signal acquisition and backplane bridging within CompactLogix control platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-IA16 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.75 lbs (0.34 kg) |
| Dimensions | Standard CompactLogix 1769 Module Form Factor |
| Operating Temp | 0 to 60 deg C (32 to 140 deg F) |
| Power Consumption | 115 mA @ 5.1 VDC backplane draw (3.3 W heat dissipation) |
| Input Channels | 16 AC Discrete Inputs (1 Group of 16) |
| Operating Voltage Range | 79 to 132 VAC |
| Operating Frequency | 47 to 63 Hz |
| On / Off Input Delay | 20 ms / 20 ms |
| Maximum Inrush Current | 250 mA |
Backplane Bus Communication Velocity and EtherNet/IP Performance
The 1769-IA16 module interfaces directly with the CompactLogix local backplane to execute high-density 120 VAC digital input state processing. Input channel data is filtered through an internal RC network with deterministic 20 ms hardware delay profiles for both turn-on and turn-off transitions. Backplane bus communication velocity and firmware flash compatibility allow high-density I/O density scaling while isolating transient line spikes across the system bus.
Frequently Asked Questions
Q: How are the commons arranged on the 1769-IA16 AC input module?
A: The module features 16 inputs organized in a single group with internally connected commons, simplifying field wiring to a single AC neutral return line.
Q: What are the input signal voltage limits for proper ON and OFF state detection?
A: The module operates within an AC voltage range of 79 to 132 VAC at 47 to 63 Hz. Inputs below the minimum threshold will register as an OFF state, while voltage levels within range drive an ON state signal.
Q: What is the backplane current draw and power consumption for this module?
A: The 1769-IA16 draws 115 mA from the 5.1 VDC backplane bus and dissipates a maximum of 3.3 Watts of heat during full operation.
Field Installation Guidelines
- Mount the 1769-IA16 on a grounded DIN rail or attach directly to an enclosure subpanel using M4 mounting hardware. Verify that the DIN rail maintains low impedance to functional earth (FE).
- Maintain a minimum clearance of 50 mm (2 inches) above and below the module chassis to support natural thermal convection and heat dissipation.
- Route 120 VAC field signal conductors through separate wiring troughs away from low-voltage DC lines and communication cables to avoid noise coupling.
- Wire field devices to the removable terminal block using 22 to 14 AWG solid or 22 to 16 AWG stranded copper wire. Secure terminal connections cleanly.
- Align side bus connectors with adjacent 1769 modules and slide the bus lever into the locked position to complete backplane bus continuity before applying system power.
