Product Summary
The Allen-Bradley 1771-IBN is a high-density 32-point discrete input module. This PLC-5 component interfaces with 24VDC field devices. It translates switch and sensor signals into processor data. Its modular design integrates into standard 1771 I/O chassis. This module provides reliable signal acquisition for industrial control systems.
Theme: Product Procurement & Buyer Guide
This guide helps engineers and buyers select the correct interface module. The 1771-IBN provides thirty-two inputs for DC signals. This high channel count saves valuable chassis space. You can connect multiple sensors with fewer modules. This reduces overall system cost and complexity.
The module operates with a voltage range of 10 to 30 Volts DC. This flexibility supports standard 24VDC control systems. It works with source-switching devices. Typical devices include dry-contact switches and pushbuttons. The module filters input signals digitally using a 6 ms delay. This delay reduces electrical noise interference. It ensures stable and accurate data reading.
Check your chassis compatibility before purchasing. The 1771-IBN installs in any 1771-A1B through 1771-A4B chassis. It requires a 1771-WN wiring arm for field connections. This arm allows module replacement without rewiring. The module draws 280 mA from the 5VDC backplane. Please confirm your power supply can handle this load. The compact dimensions are 89 x 165 x 51 mm (3.5 x 6.5 x 2.0 in). Verify the slot depth in your enclosure.
Procurement teams should specify the series C revision. This series supports both 1/2 and 1-slot I/O addressing. The module features conformal coating for protection. This coating guards against moisture and contaminants. It extends the product's lifespan in harsh environments. The 1771-IBN delivers high reliability for critical production lines.
Theme: Step-by-Step Installation Guide
Proper installation maximizes the performance of your 1771-IBN module. Follow this guide for a safe and efficient setup. Always disconnect power before starting installation.
1. Mechanical Mounting: Insert the module into an empty slot. Use the plastic keying bands to ensure correct orientation. Place the upper band between pins 18 and 20. Place the lower band between pins 14 and 16. This prevents damage from incorrect installation. Secure the module firmly into the chassis. Ensure the locking tabs engage completely.
2. Field Wiring: Attach the 1771-WN wiring arm to the module. Use copper wire with a 75°C insulation rating. The acceptable size is 22...14 AWG (0.25-2.5 mm sq). Tighten the wiring arm screws to 1.0 N-m. Connect your field devices to the correct terminals. The module accepts 32 inputs arranged in four groups of eight. Wire each sensor to its dedicated input channel.
3. Electrical Configuration: The module operates with a sink (source load) configuration. Apply 10-30VDC to activate an input channel. The on-state voltage minimum is 10 VDC. The off-state voltage maximum is 5 VDC. Check the nominal current draw per input. It is 4.7 mA at 10VDC and 15.6 mA at 30VDC. Ensure your sensors meet these current requirements.
4. System Check: Power up the PLC system after wiring. Observe the 32 LED indicators on the front panel. Each LED corresponds to a specific input channel. Activate each field device to test the connection. The input signal delay is typically 6 ms (+/- 2 ms) . Verify the data table reflects the correct input states. The module directly controls the corresponding bits. Confirm the addressing matches your PLC program. This module uses a 32-bit register for all channels.
Logistics & Standard Packaging Details
- One Allen-Bradley 1771-IBN PLC-5 Input Module
- One 1771-WN Wiring Arm assembly
- Plastic keying bands for slot alignment
- Printed installation guide
We ship all orders using premium express carriers. This ensures you receive your part quickly. Choose from FedEx, UPS, or DHL at checkout. This service delivers the module to your facility. We package the module in anti-static material. This protects the sensitive electronics during transit. Your production line will stay on schedule.
