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1771-HRA

Allen-Bradley 1771-HRA PLC 5 Resolver Excitation Module

In stock (23 units), ready to be shipped

  • Manufacturer: Allen-Bradley

  • Product No.: 1771-HRA

  • Product Type: Excitation Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 900g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Description

Allen-Bradley 1771-HRA Resolver Excitation Module

The Allen-Bradley 1771-HRA is a resolver excitation module from the PLC 5 series. Weighing approximately 0.9 kg, it draws power from a 1771-PS7 supply and provides sine and cosine signals to excite the stator of IMC 120 resolver feedback, delivering precise position feedback to controller modules.

Product Identification

  • Manufacturer: Rockwell Automation
  • Brand: Allen-Bradley
  • Part Number: 1771-HRA
  • Module Type: Resolver Excitation Module
  • Series: PLC 5
  • Wiring Arm: 1771-WA

Technical Specifications

Parameter Value
Weight Approx. 0.9 kg
Dimensions (H×W×D) 89 × 165 × 51 mm
Current Rating (5.2V DC) 340 mA
Current Rating (15V DC) 228 mA
Maximum Wattage 9.06 W
Fuse Voltage 120V
Max Input Frequency 250 kHz differential input
Outputs ±10V DC analog command
Slots 2 slots per ES
Module Update Period 2 ms/axis
Backplane Current 1.7 A
Pulse Capture Time 50-9.999 μs

Output and Signal Specifications

Parameter Value
Sinusoid Output Amplitude 6.72V to 7.42V RMS
Sine-Cosine Matching 0.3% max
Maximum Offset Voltage 0.01V DC
Signal Distortion (THD) 0.1%
Output Frequency 2.5 kHz
Sine-to-Cosine Relationship 90° for 4.5 minutes
Sine Phase Offset 0.450
Sine Drift ±5.4 minutes
Max Output Inductive Load 80 Ω at 80°
Output Current Limit 0.81 A min / 0.35 A max
Max Signal Delay 2 s from power-up to output

Features

  • Provides sine and cosine excitation signals for IMC 120 resolver feedback.
  • Powered by 1771-PS7 supply (5V, 15V, 24V DC).
  • Green LED indicator for power status.
  • Connects to termination panel using 1771-CAPR 12 ft cable.
  • Uses 1771-CAS cable with 12-pin Latch and Lock connector.
  • Backplane power consumption of 0.4W.

Installation

  • Mount in 1771 I/O chassis using 2 slots per ES.
  • Connect 1771-PS7 power supply via 1771-CAS cable.
  • Use 1771-CAPR 12 ft cable for termination panel connection.
  • Install 1771-WA wiring arm for field connections.
  • Verify green LED power indicator before operation.

Technical FAQs

Q1: What is the weight of the module?
A1: Approximately 0.9 kg.

Q2: What is the maximum wattage rating?
A2: 9.06 W.

Q3: What is the output frequency of the excitation signals?
A3: 2.5 kHz.

🏷️ Tags: Excitation Module
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  • Confirm the exact model, part number, and specifications before ordering.
  • Ensure compatibility with your current machinery or control systems.
  • Reach out via sale@etowonauto.com or +8617859788089 for technical assistance.
  • Review delivery options, lead times, and shipping requirements.
  • Follow manufacturer instructions and best practices during installation.

In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.

Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.

For more details, please review our Shipping & Return Policy.

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