Allen Bradley 1756-IM16I ControlLogix Isolated Input

The AB 1756-IM16I is a high-voltage AC input module for ControlLogix systems, offering 16 individually isolated input channels rated for 159–265 VAC operation. Designed for use in industrial control applications requiring reliable input detection at 230V nominal voltage, this module ensures electrical separation between each input point, enhancing noise immunity and system flexibility.

The 1756-IM16I installs into any standard 1756 chassis and communicates via the ControlLogix backplane. Featuring a 36-pin plug-in connection and wide voltage tolerance, this module is ideal for large-scale automation systems using line-voltage sensors and switches.

Technical Specifications

Model: 1756IM16I
Series: ControlLogix
Type: AC Digital Input Module
Input Channels: 16 (individually isolated)
Input Voltage Range: 159–265 VAC
Nominal Input Voltage: 230 VAC
Digital Output Channels: 0
Mounting Type: 1756 Chassis Slot
Application: High-voltage signal input for industrial I/O, switchgear, and process systems

Electrical Specifications

Voltage Type: AC
Permitted Input Voltage: 230 VAC ± tolerance
Channel Isolation: Yes – each input is individually isolated
Input Type: AC logic-level sensing
Backplane Communication: 1756 ControlLogix
Short-Circuit Protection: Not applicable (input module)
Integrated Filtering: Yes – improves signal stability in noisy environments
Power Supply: Via chassis backplane

Mechanical Specifications

Width: 38.1 mm
Height: 300 mm
Depth: 111.25 mm
Mounting: Standard ControlLogix slot
Connection Type: 36-pin plug-in terminal block
Housing: Industrial-grade enclosure
Weight: Approx. 280 g

Environmental Specifications

IP Rating: IP20 (when installed)
Operating Temperature: 0…60 °C
Storage Temperature: -40…85 °C
Humidity: 5% to 95%, non-condensing
Shock/Vibration Resistance: IEC 60068 compliant
Certifications: CE, cULus, RoHS
Installation Location: Control cabinets and enclosed panels

Compliance & Communication

ControlNet / DeviceNet / EtherNet/IP: Supported via chassis and controller
RSLogix 5000 / Studio 5000 Integration: Fully supported
Diagnostic Features: Per-point status and fault monitoring
I/O Update Rate: Determined by system scan time and configuration
Redundancy Compatibility: Yes (controller dependent)

Key Features & Benefits

✅ 16 Individually Isolated Inputs – Reduces signal interference and allows mixed-source voltage input

✅ High Voltage Range (159–265 VAC) – Compatible with standard European and global line voltages

✅ Plug-In 36-Pin Terminal Block – Simplifies wiring and maintenance

✅ Compact Chassis Fit – Standard 1756 module width saves panel space

✅ Studio 5000 Ready – Easily configured within Allen Bradley environments

✅ Ideal for Process and Utility Systems – Perfect for high-voltage sensors, switches, and alarm inputs

📦 Order the Allen Bradley 1756-IM16I from Drive Outlet Megastore

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