| Brand | Allen-Bradley |
| Status | Discontinued by Manufacturer |
| Mounting | 1771 I/O Chassis Slot |
| Module Type | Resolver Excitation Module |
| Part Number | 1771-HRA |
| Manufacturer | Rockwell Automation |
| Power Supply | 1771-PS7 |
| Signal Frequency | 2.5 kHz |
| Compatible System | IMC 120 |
| Sine Phase Offset | 0.450° |
| Output Voltage (Sinusoid) | 6.72V to 7.42V RMS |
| Backplane Power Consumption | 0.4 Watts |
| Sine-Cosine Amplitude Match | Max 0.3% |
Does the Allen-Bradley 1771-HRA come with a warranty?
Yes. The 1771-HRA is backed by our 24-Month Replace Industrial Warranty, with no rush fees or hidden warranty charges. If a unit fails under normal use within the warranty period, we repair or replace it.
Is this 1771-HRA a genuine Allen-Bradley part?
The 1771-HRA is sourced and verified independently. Replace Industrial, LLC is not a Rockwell Automation Authorized Distributor, and all warranties are provided directly by Replace Industrial.
Is the Allen-Bradley 1771-HRA new or used?
We offer the 1771-HRA in multiple conditions, from unused surplus to professionally reconditioned units. Every option is sourced and verified independently and covered by our 2-year replacement warranty.
What are the key ratings of the 1771-HRA?
The 1771-HRA is rated at 0.4 Watts.
What is the Allen-Bradley 1771-HRA?
The 1771-HRA is an Allen-Bradley PLC-5 Resolver Excitation Module.
1771-HRA
The Allen-Bradley 1771-HRA Resolver Excitation Module is engineered for installation in the 1771 I/O chassis and integrates with the IMC 120 system to provide accurate Sine and Cosine output signals for resolver position feedback. Powered by the 1771-PS7 power supply, this module consumes only 0.4 watts on the backplane and includes a green LED to indicate power status. It delivers sine wave outputs with amplitudes ranging from 6.72V to 7.42V RMS, maintaining precise signal characteristics with a maximum amplitude matching error of 0.3%, a sine phase offset of 0.450 degrees, and operates at a frequency of 2.5 kHz for reliable feedback performance.
All products are covered by our 2-Year (24-Month) Replace Industrial Warranty. If a unit is found defective under normal use within the warranty period, we repair or replace it at no additional cost, and a unit may be returned for a full refund within 30 days if returned in the same condition it was sent.
Replace Industrial is an independent distributor and does not convey the manufacturer's warranty; all warranties are provided by Replace Industrial alone. Read the full warranty policy
We repair a wide range of industrial automation equipment, including PLCs, HMIs, drives, servo motors, switches, and circuit breakers, with rush service for critical downtime. Request a quote, ship your unit, and we diagnose, repair, and return it. Request a repair quote
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We can ship many items our the same day via Overnight or 2 Day Shipping.
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