Allen-Bradley 1756-IA16

ControlLogix 16 Point 120V AC Input Module

Allen-Bradley 1756-IA16 ControlLogix 16 Pt D/I 120V AC Module, Rockwell Automation product photo

Image is for illustrative purposes only. Please refer to product description.

Delivery options

Allen-Bradley 1756-IA16 ControlLogix digital input module: 16 inputs at 120V AC in two groups of eight, 74 to 132V AC operating range.

Manufacturer: Allen-Bradley
Manufacturer part no.: 1756-IA16
Product family: ControlLogix I/O Modules (1756)
Type: Digital input module
Category: PLCs and I/O › Digital I/O modules
Lifecycle: Active
OEM successor: Not stated
Technical datasheet: Data sheet

Technical specifications

Manufacturer: Allen-Bradley
Manufacturer part no.: 1756-IA16
Type: Digital input module
Application: I/O module
Used with: ControlLogix 1756 chassis
Inputs: 16 (8 points/group)
Voltage category: 120V AC 50/60 Hz
Operating voltage range: 74…132V AC, 47…63 Hz
Input delay time (screw to backplane): Hardware delay: 10 ms max + filter time, User-selectable filter time: 1 ms or 2 ms, Hardware delay: 8 ms max + filter time, User-selectable filter time: 9 ms or 18 ms
Current draw @ 5.1V: 100 mA
Current draw @ 24V: 2 mA
Total backplane power: 0.58 W
Power dissipation, max: 5.8 W @ 60 °C (140 °F)
Thermal dissipation: 18.41 BTU/hr
Off-state voltage, max: 20V
Off-state current, max: 2.5 mA
On-state current, min: 5 mA @ 74V AC
On-state current, max: 13 mA @ 132V AC
Inrush current, max: 250 mA peak (decaying to <37% in 22 ms, without activation)
Cyclic update time: 200 µs…750 ms
Change of state: Software configurable
Time stamp of inputs: ±200 µs
Isolation voltage: 125V (continuous), basic insulation type, inputs-to-backplane, and input group-to-group, No isolation between individual group inputs
Module keying: Electronic, software configurable
RTB keying: User-defined mechanical
Slot width: 1
Enclosure type: None (open-style)
North American temperature code: T4
Temperature, operating: 0…60 °C (32…140 °F)
Temperature, nonoperating: -40…+85 °C (-40…+185 °F)

Show all 40 specifications

Relative humidity: 5…95% noncondensing
Vibration: 2 g @ 10…500 Hz
Shock, operating: 30 g
Shock, nonoperating: 50 g
Emissions: IEC 61000-6-4
ESD immunity: 6 kV contact discharges 8 kV air discharges
Radiated RF immunity: 10V/m with 1 kHz sine wave 80% AM from 80…2000 MHz 10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz 10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz 3V/m with 1 kHz sine wave 80% AM from 2000…2700 MHz
EFT/B immunity: ±4 kV at 5 kHz on signal ports
Surge transient immunity: ±1 kV line-line (DM) and ±2 kV line-earth (CM) on signal ports
Conducted RF immunity: 10V rms with 1 kHz sine wave 80% AM from 150 kHz…80 MHz

Technical documents (1)

Rockwell Automation technical data 1756-TD002

Key features

Electronic module keying, software configurable
Time stamp of inputs to ±200 µs
Change of state is software configurable
Cyclic update time of 200 µs to 750 ms
Single slot width with user-defined mechanical RTB keying

About the Allen-Bradley 1756-IA16

The 1756-IA16 is a ControlLogix 16 point 120V AC input module. Its 16 inputs sit in groups of 8, in the 120V AC 50/60 Hz category, with an operating range of 74 to 132V AC at 47 to 63 Hz. Off-state is 20V and 2.5 mA maximum; on-state current is 5 mA minimum at 74V AC and 13 mA maximum at 132V AC. It is a one-slot, open-style module for 0 to 60 °C.

What is the 1756-IA16 used for?

It brings 16 discrete 120V AC signals onto the ControlLogix backplane. Change of state is software configurable and inputs are time stamped to ±200 µs. It draws 100 mA at 5.1V and 2 mA at 24V, 0.58 W of backplane power in total.

Lifecycle and successor

Active (Rockwell Automation lifecycle status, checked 24 October 2026).

Before you order

What to photograph or confirm so the right unit is quoted.

Read the catalog number 1756-IA16, the series letter and the firmware revision from the label. Send us a photo of the label and we confirm the match before we quote.

Other parts in the Allen-Bradley ControlLogix I/O Modules family

Listed for reference. They differ from the 1756-IA16 in rating, supply, interface or function and are not interchangeable with it unless Allen-Bradley says so. Match the part number on your unit.

Product	Type	Lifecycle	Qty Available	Price	Action
Allen-Bradley 1756-OW16IControlLogix 16 Point Isolated Relay Output Module	Digital output module	Active	On request	On request	View
Allen-Bradley 1756-IB16ControlLogix 16 Point 12/24V DC Input Module	Digital input module	Active	On request	On request	View
Allen-Bradley 1756-IB16IControlLogix 16 Point Isolated 24V DC Input Module	Digital input module	Active	On request	On request	View
Allen-Bradley 1756-IB16SControl Logix Safety IO Module, 16 Sinking Inputs	Digital input module	Active	On request	On request	View
Allen-Bradley 1756-IB32ControlLogix 32 Point 12/24V DC Input Module	Digital input module	Active	On request	On request	View
Allen-Bradley 1756-IF16ControlLogix 16 Point Analog Input Module	Analog input module	Active	On request	On request	View
Allen-Bradley 1756-IF16HControlLogix 16 Point HART Analog Input Module	Analog input module	Active	On request	On request	View
Allen-Bradley 1756-IF6IControlLogix 6 Point Isolated Analogue Input Module	Analog input module	Discontinued	On request	On request	View
Allen-Bradley 1756-IF8ControlLogix 8 Point A/I Module	Analog input module	Active	On request	On request	View
Allen-Bradley 1756-IF8IControlLogix 8 Point Isolated Analog Input Module	Analog input module	Active	On request	On request	View
Allen-Bradley 1756-IRT8IControlLogix 8 Point RTD/Thermocouple Input Module	Analog input module	Active	On request	On request	View
Allen-Bradley 1756-OA16ControlLogix 16 Point 74-265 VAC Output Module	Digital output module	Active	On request	On request	View

You may also be interested in

TimControls is an independent distributor. Manufacturer names and logos are the property of their respective owners and identify products we source; they do not imply manufacturer authorization or affiliation.

Need Allen-Bradley 1756-IA16? Send us the details.

Request a Quote