The Allen-Bradley 1771-IBD is a high-density digital input module. It provides 16 discrete channels for 10 to 30VDC sink inputs. This unit interfaces directly with switches and sensors. The 1771-IBD module delivers robust signal processing for binary devices. Its design prioritizes system protection and signal integrity.
Product Procurement & Buyer Guide for the 1771-IBD
Engineering teams must align module specs with system needs. The 1771-IBD requires a 130 mA backplane current at 5VDC. Your chassis must supply this critical power load. Check compatibility with all 1771 I/O chassis types. You cannot use it with the 1771-A1, -A2, or -A4 models. Always verify mechanical keying before installation.
The upper connector uses keying bands between pins 16 and 18. The lower connector uses keying bands between pins 10 and 12. This mechanical feature prevents incorrect slot insertion. The module includes a 1771-WH field wiring arm. This arm simplifies wiring and future module swaps. You never need to disconnect wires for a replacement.
Each of the 16 input channels works with a 10 to 30VDC range. The minimum on-state voltage is exactly 10VDC. The maximum off-state voltage is just 5VDC. This clear threshold creates reliable binary state detection. The module also supports source-switching devices effectively. Use it with dry-contact switches and pushbuttons.
Expert Technical Evaluation & Performance Review
The 1771-IBD module offers a typical signal delay of 1.3 milliseconds. This delay applies to both on and off states. Its response ensures accurate high-speed input capture. The input filtering feature reduces electrical noise effectively. Optoelectrical isolation protects internal system circuits from harmful transients.
The unit dissipates a maximum of 7.3 Watts of power. Its thermal dissipation reaches up to 24.7 BTU per hour. These values show efficient energy management for your panel. The maximum off-state current is only 2.0 milliamperes. This low leakage current prevents false signal readings on your system.
You will find one green status indicator on the front panel. The module also has 16 red indicators for input status. These LEDs provide instant visual feedback on channel states. The module fits easily into any 1771 I/O chassis. Its dimensions are only 3.5 by 6.5 by 2.0 inches.
Logistics & Standard Packaging Details
- One Allen-Bradley 1771-IBD Digital DC Input Module
- One 1771-WH Field Wiring Arm (installed)
- Pre-installed mechanical keying bands
- Manufacturer documentation for installation
We ship all orders with express delivery services. You can choose between FedEx, UPS, and DHL. Each shipment receives full tracking and insurance coverage. This ensures your critical automation component arrives safely.
