GE / IP FANUC Series 90/30 In Stock
Home » Allen Bradley » PLC-5 » You are here: 1771-QA
1771-QA
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-QA 1771-QA//A
Common misspellings:
- l771-QA
- 177l-QA
- 1771QA
The 1771-QA is a stepper positioning assembly, manufactured and designed by Allen-Bradley. This unit belongs to the 1771 series and it is intended for controlling stepper motors using Allen-Bradley programmable controllers. One stepper module can control up to three expander modules. These are specially used in applications that require more than three axes and they can be also distributed throughout the plant by using remote I/O. The Allen-Bradley 1771-QA stepper positioning assembly is composed of two main components that are a pulse expander module and a stepper controller module. These have an output current of 8 Amps at 5 Volts DC, 2 Amps at +/- 15 Volts DC and 2.5 Amps at 24 Volts DC. These modules are compatible with any Allen-Bradley controller that has block transfer instructions.
The environmental conditions for both modules of the Allen-Bradley 1771-QA stepper positioning assembly are a temperature range from 5 to 60 degrees Celsius and a humidity rating of 5 to 95% without condensation. The communication between the PC processor data table and the Allen-Bradley 1771-QA stepper positioning assembly is controlled by a program logic. This assembly has LED indicators that allow users to observe the operating condition of the unit, it indicates communication faults with the PC and expander, and it indicates when the unit is active. When it comes to the installation of the Allen-Bradley 1771-QA stepper positioning assembly, there should not be more than three expander modules installed on the same I/O chassis. These modules can be located anywhere except the left-slot of the chassis.
