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1771-WHFB
Rockwell Disclaimer: The product is used surplus. PDF Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because PDF Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, PDF Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. PDF Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. PDF Supply also makes no representations as to your right to install any such firmware on the product. PDF Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
PDF Supply is NOT an authorized distributor for this manufacturer and therefore the manufacturer’s warranty does not apply. Product comes with PDF Supply's 1-year, 2-year, or 3-year warranty.
Other Available Revisions for the 1771-WHFB 1771-WHFB//A
Common misspellings:
- l771-WHFB
- 177l-WHFB
- 1771-WHF8
- 1771WHFB
The Allen-Bradley 1771-WHFB is part of the family of Allen-Bradley PLC-5 wiring arms. This device features 21 tin contact-plated terminals with 16 I/O points. It also features 7 to 9 pounds on an inch in screw torque and it comes with a fuse size not exceeding 1.5 Amps. This device is used for the typical applications that require a fused wiring arm, individual circuit protection, and general-purpose applications. The 1771-WHFB comes with a conformal coating, which eliminates the need for an external power source. The device has dimensions of 4.5 x 12.4 x 6.3 inches and weighs 0.3 pounds. The biggest advantage about the 1771-WHFB is that it offers users with the capability of flexible interconnection between the plant wiring and the Allen-Bradley 1771 I/O modules.
However, the communication between the analog module and the processor is bidirectional. This translates the processor block transferring input data and output data through the output image table to the module. Similarly, it helps to block-transfer data originating from the module through the input image table. The module also requires an area within the data table that helps to store the read block-transfer data. The analog I/O therefore serves as a smart block transfer module that has the capacity to interface the analog signals to any processor with the block transfer capability enabled. The analog input module has the capability to sense up to 16 single-ended or 8 differential analog inputs and has the capability to change them into four proportional BCG-digits. During installation, it is important to disconnect power from the 1771 I/O chassis and the 1771-WHFB wiring arm before connecting the 1/0 module. If the power is not disconnected, it can lead to damages to the module and lower its performance.
