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1771-HRA

Allen-Bradley 1771-HRA PLC 5 Resolver Excitation Module

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  • 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

30 kunlik qaytarish siyosati · 12 oylik kafolat
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Tavsif

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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