Description
The Allen-Bradley 1756-IB16 is a ControlLogix digital input module designed for 24VDC nominal operation within an industrial automation system. It provides 16 sinking input channels arranged in two groups, enabling reliable signal acquisition from field devices.
Technical Specifications
| Brand |
Allen-Bradley |
| Series |
ControlLogix |
| Part Number |
1756-IB16 |
| Manufacturer |
Rockwell Automation |
| Inputs |
16 |
| Module Type |
Digital DC Input Module |
| No. of Inputs |
32 |
| Input Voltage |
12-24 Volts DC Sink |
| Operating Voltage Range |
10-31.2 Volts DC |
| Module Keying |
Electronic |
| Maximum Operating Current |
10 milliamperes at 31.2 Volts DC |
| Input Delay Time |
2 milliseconds plus selected filter time |
| Maximum Input Current, Off-State |
1.5 milliamperes |
| Minimum Operating Current |
2 milliamperes at 10 Volts DC |
| Input Delay Time, OFF to ON |
Hardware delay: 290 µs nom/1 ms max + filter time |
| Input Delay Time, ON to OFF |
Hardware delay: 700 µs nom/2 ms max + filter time |
| Power Dissipation (Max) |
5.1 W @ 60 °C (140 °F) |
| Backplane Current at 24 Volts |
2 milliamperes |
| Backplane Current at 5.1 Volts |
120 milliamperes |
| Thermal Dissipation |
21.1 BTU/hr @ 60 °C (140 °F) |
| Removeable Terminal Block(s) |
1756-TBCH 1756-TBS6H |
Information About 1756-IB16
The 1756-IB16 is part of the Allen-Bradley ControlLogix I/O module family, developed for use in local or remote 1756 chassis. It operates in the 10–31.2 VDC voltage range, with a nominal input of 24 VDC, making it compatible with a wide range of industrial sensors and switches. The module provides 16 input points, grouped into two sets of eight channels, and offers isolation voltage of 250V continuous for safe operation. Input delay times include 290 µs nominal hardware delay for ON transitions and 700 µs nominal for OFF transitions, with additional user-configurable filter times for noise suppression. Power consumption is efficient, requiring 120 mA at 5.1VDC and 2 mA at 24VDC, with maximum dissipation of 5.1 W at 60 °C. The module installs with a compatible removable terminal block (1756-TBNH or 1756-TBSH), ensuring secure wiring and easy integration into automation systems.
Key Features:
- Input Channels: Sixteen DC sinking inputs grouped into two sets of 8 channels.
- Voltage Range: Operates from 10–31.2 VDC with a nominal rating of 24 VDC.
- Input Performance: ON-state current 2 mA at 10VDC to 10 mA at 31.2VDC; OFF-state max 1.5 mA at 5VDC.
- Timing: Hardware delay of 290 µs ON and 700 µs OFF, plus selectable filter times (0, 1, 2, 9, or 18 ms).
- Power: Requires 120 mA at 5.1VDC, 2 mA at 24VDC, with max power dissipation of 5.1 W.
- Isolation: Provides 250V continuous isolation between field side and backplane for safety.
- Mounting: Directly installs into 1756 ControlLogix chassis for local or remote applications.
- Wiring: Compatible with 1756-TBNH and 1756-TBSH removable terminal blocks for simplified installation.
The 1756-IB16 delivers the reliability and precision required for digital input monitoring in ControlLogix-based automation systems.
Manufacturer information
Allen-Bradley, a brand of Rockwell Automation, specializes in manufacturing industrial automation equipment. The product range includes programmable logic controllers (PLCs), motion control systems, safety devices, motor control equipment, automation software, and HMI panels. Allen-Bradley products are known for their reliability and integration with other systems.
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