Product Summary
The Allen-Bradley 1771-IBN module provides thirty-two discrete input channels for your PLC5 control system. It accepts a 10-30VDC signal range and offers high-density I/O in a compact form factor. This module uses a 1771-WN wiring arm to simplify field wiring and replacement.
Product Procurement & Buyer Guide
Engineers select the 1771-IBN for its high channel count and robust DC input performance. This module directly interfaces with 32 dry-contact switches or sensors. It operates within a 10-30 VDC voltage range, making it ideal for 24VDC control circuits. Each channel provides a typical signal delay of just 6 ms. This ensures rapid data acquisition for time-sensitive processes.
The module draws only 280 mA from the 5V backplane bus. This low power consumption leaves ample headroom for other chassis modules. The 1771-IBN fits perfectly in any 1771-A1B through 1771-A4B chassis. It supports both 1/2-slot and 1-slot I/O addressing modes. This flexibility simplifies integration into existing PLC5 processor configurations. The module's conformal coating protects circuits from moisture and vibration in harsh industrial environments.
Step-by-Step Installation Guide
First, power down the entire 1771 I/O chassis completely. Insert the 1771-IBN module into any available I/O slot. Use the provided keying bands for correct slot orientation. Position the upper key between pins 18 and 20. Position the lower key between pins 14 and 16. This prevents installation in the wrong slot location.
Next, attach the 1771-WN field wiring arm to the module's front connector. Use solid or stranded copper wire between 22 and 14 AWG. Ensure the insulation rating meets 75 °C or higher. Tighten each wiring arm screw to 1.0 N-m torque for a secure connection. Wire your field devices to the corresponding terminal points. The module supports source-switching devices like pushbuttons and selector switches.
Finally, power on the chassis and observe the 32 front-panel LED indicators. Each LED lights up to show the status of its specific input channel. The module quickly reflects the states of connected field devices in the PLC data table. This immediate visual feedback helps verify proper wiring and system operation.
Logistics & Standard Packaging Details
