1756-IB16 16-Point Digital Input Module 12/24V DC | Allen-Bradley

The Original New Allen-Bradley 1756-IB16 16-Point Digital Input Module is a ControlLogix discrete input module designed for reliable DC signal acquisition from field devices in industrial automation systems. It provides 16 isolated sinking input channels supporting 12/24V DC signals, making it ideal for monitoring pushbuttons, limit switches, proximity sensors, and other discrete field devices. Fully compatible with the ControlLogix platform, this module integrates into the 1756 chassis backplane for seamless data exchange with controllers.

Core Engineering Highlights:
16 isolated sinking input channels | 10–31.2V DC operating range | 12/24V DC nominal | 290 µs typical OFF→ON hardware delay | 2 input groups (8 points per group) | 0–60°C operating temperature | Electronic keying | Hot-swappable | Producer/consumer communication

Key Features:

• Original New Allen-Bradley 1756-IB16 module

• 16 isolated sinking (sink) input channels

• 10–31.2V DC wide operating voltage range accommodates 12V and 24V DC field devices

• Two input groups of 8 points each

• Per-point isolation reduces noise coupling and improves system reliability

• Fast hardware response: 290 µs typical OFF→ON, 700 µs typical ON→OFF

• Programmable input filtering (0–32 ms) for noise immunity

• Electronic module keying prevents incorrect installation

• Hot-swappable within the chassis for reduced downtime

• Producer/consumer communication model for efficient data exchange

• LED indicators for input and module status

• Chassis-mount form factor for ControlLogix systems

• Open-style enclosure (IP20 equivalent)

Applications:

• Discrete signal acquisition from limit switches, pushbuttons, and selector switches

• Proximity and photoelectric sensor monitoring

• Safety interlock and emergency stop status monitoring

• Conveyor and material handling system control

• Packaging machinery and automated assembly lines

• Manufacturing line monitoring and process automation

• Building automation and HVAC system integration

Technical Specifications:

• Catalog Number: 1756-IB16

• Product Family: ControlLogix (Bulletin 1756)

• Product Type: Digital DC Input Module

• Inputs: 16 sinking (sink) input channels

• Input Groups: 2 groups of 8 points

• Nominal Input Voltage: 24V DC

• Voltage Category: 12/24V DC Sink

• Operating Voltage Range: 10–31.2V DC

• Input Current (On-State): 8 mA typical @ 24V DC

• Off-State Leakage Current (Max): 1.5 mA

• Input Delay (OFF to ON): 290 µs typical / 1 ms max hardware delay + selected filter time

• Input Delay (ON to OFF): 700 µs typical / 2 ms max hardware delay + selected filter time

• Input Filter: Programmable 0–32 ms

• Backplane Current Draw: 120 mA @ 5.1V DC

• Backplane Power: 0.56W

• Power Dissipation (Max): 5.1W @ 60°C

• Thermal Dissipation: 21.1 BTU/hr @ 60°C

• Isolation: Per-point isolated inputs

• Slot Width: 1

• Removable Terminal Block: 1756-TBCH or 1756-TBS6H

• Enclosure Type: Open-style (IP20 equivalent)

• Dimensions: 127 x 96 x 25 mm (approx.)

• Weight: 0.23 kg (0.50 lb)

• Operating Temperature: 0°C to 60°C

• Storage Temperature: –40°C to 85°C

• Certifications: CE, CSA, KC, MARINE, NRTL, RCM, UL

System Compatibility:

• Rockwell Automation ControlLogix 5570 and 5580 controllers

• CompactLogix 5380 controllers

• GuardLogix 5570 safety controllers

• 1756 ControlLogix chassis (1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17)

• 1756 series power supplies

• 1756 series communication modules (EtherNet/IP, ControlNet, DeviceNet)

• Studio 5000 Logix Designer® application

• RSLogix 5000 software

• EtherNet/IP industrial networks

Typical System Architecture:
1756 Power Supply (e.g., 1756-PA72 / 1756-PB72)
↓
1756-A10 / 1756-A13 ControlLogix Chassis
↓
1756-L7x / 1756-L8x ControlLogix Controller
↓
1756-IB16 Digital Input Module (16 points)
↓
1756-EN2T EtherNet/IP Communication Module
↓
Field Devices (Limit Switches, Proximity Sensors, Pushbuttons)

Related Products:

• 1756-TBCH – Removable terminal block (screw clamp) for 1756-IB16

• 1756-TBS6H – Removable terminal block (spring clamp) for 1756-IB16

• 1756-IB16D – 16-point diagnostic digital input module

• 1756-IB16I – 16-point isolated input module with sequence of events

• 1756-IB32 – 32-point digital input module

• 1756-OB16E – 16-point electronic fusing digital output module

• 1756-EN2T – EtherNet/IP communication module

• 1756-L83E – ControlLogix 5580 controller, 8MB, EtherNet/IP

• 1756-PA72 – ControlLogix power supply, 120/240V AC, 10A

• 1756-A10 – 10-slot ControlLogix chassis

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Allen-Bradley, ControlLogix, CompactLogix, GuardLogix, and Studio 5000 are trademarks of Rockwell Automation.