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Allen Bradley PLC 5 1771-HRA

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1771-HRA

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The Allen-Bradley/Rockwell Automation 1771-HRA module is a resolver excitation module or driver module from the PLC 5 series. Its current ratings are 340 milliamps at 5.2 Volts DC and 228 milliamps at 15 Volts DC. The 1771-HRA resolver excitation module draws its power from an Allen-Bradley 1771-PS7 power supply. Its maximum wattage rating is 9.06 Watts. The 1771-HRA resolver excitation module is compatible with the Allen-Bradley IMC 120 servo control system and IMC 123 motion control system.

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Rockwell Disclaimer: The product is used surplus. DO 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 DO 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, DO 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. DO 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. DO Supply also makes no representations as to your right to install any such firmware on the product. DO 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.

Technical specifications for 1771-HRA

ManufacturerAllen Bradley
CategoryPLCs
Product LinePLC 5
Part Number1771-HRA
Weight1.94 lbs (0.88 kg)
Module TypeResolver Excitation Module
Fuse Voltage120 Volts
Max Input Frequency250 Kilohertz Differential Input
Outputs+/- 10 Volt DC Analog Command
Slots2 Slots Per ES
Module Update Period2 ms/axis
Backplane Current1.7 Amperes
Wiring Arm1771-WA
Pulse Capture Time50-9.999 Microseconds
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The 1771-HRA Resolver Excitation Module by Allen-Bradley is a module located on the 1771 I/O chassis slot and is used with the IMC 120 System to provide Sine and Cosine Signals which excite the Stator of the IMC 120 Resolver Feed-back and provide position feedback to controller modules. The 1771-HRA uses the 1771-PS7 power supply module which provides 5V, 15V, and 24V DC power using the 1771-CAS cable connected to the 12-pin Latch and Lock connector of the 1771-HRA and it has a backplane power consumption of 0.4W. It has a Green LED indicator light to show the power status, and it uses the 1771-CAPR 12ft cable to connect to the termination panel. It has a Sinusoid output amplitude of 6.72V (RMS) minimum and a maximum amplitude of 7.42V (RMS) and it has 0.3% maximum Sine-Cosine matching amplitude. The 1771-HRA has a maximum OFFSET voltage of 0.01V DC with 0.1% TDH signal distortion and an output frequency of 2.5 KHz. Its Sine-to-Cosine relationship stays at 900 for 4.5 minutes, with a Sine Phase OFFSET of 0.450, and a Sine Drift of -+5.4 minutes. It has a maximum output inductive load of 80 Ohms at 800 and it has an output current limit of 0.81A (min) and 0.35A (max). The 1771-HRA has a maximum signal delay time of 2s from Power-up to Output.

Revision Part #Also known as
1771-HRA Ser A1771-HRA/A, Series A, Rev A
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