PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-HR is a PLC-5 Resolver Excitation Module. It installs directly into an Allen-Bradley 1771 I/O chassis slot. The module operates with the Allen-Bradley IMC 120 motion system. It provides Sine and Cosine signals to excite the IMC 120 resolver feedback stator. These signals provide precise position feedback to controller modules. The unit features an output frequency of 2.5 kilohertz.
External operating power comes from an Allen-Bradley 1771-PS7 power supply module. This power supply delivers 5 Volts, 15 Volts, and 24 Volts DC. Power connects through a 1771-CAS cable to the 12-pin latch and lock connector. The module consumes 0.4 Watts of power from the chassis backplane. A front green LED indicator displays the operating power status. External termination panel connections use a 1771-CAPR 12-foot cable assembly.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Backplane Power Consumption | 0.4 Watts |
|---|
| Bulletin | 1771 |
|---|
| Category | PLCs |
|---|
| Compatibility | IMC 120 Module Systems |
|---|
| Connection | 1771-CAPR 12-Feet Cable |
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| Indicator | LEDs |
|---|
| Location | 1771 I/O Chassis Slot |
|---|
| Maximum Signal Delay Time | 2 seconds |
|---|
| Module Type | Resolver Excitation Module |
|---|
| Power Supply | 1771-PS7 |
|---|
| Product Line | PLC 5 |
|---|
| Weight | 1.94 lbs (0.88 kg) |
|---|
TECHNICAL INFORMATION
Features
- Generates Sine and Cosine excitation signals for IMC 120 resolver feedback stators.
- Delivers an output frequency of 2.5 kilohertz with 0.1 percent signal distortion.
- Maintains an absolute amplitude of 7.42 Volts RMS.
- Consumes 0.4 Watts of power from the 1771 I/O backplane.
- Includes a front green LED indicator to show power status.
- Connects to termination panels using a 1771-CAPR 12-foot cable assembly.
TECHNICAL INFORMATION
Applications
- Resolver stator excitation in Allen-Bradley IMC 120 motion systems.
- Position feedback interface in PLC-5 automated control architectures.
- Rotational tracking integration for 1771 chassis machinery setups.
TECHNICAL INFORMATION
Connections / Interfaces
- A 12-pin latch and lock connector interfaces with the 1771-CAS power supply cable.
- The 1771-CAPR 12-foot cable links the module to external termination panels.
- Backplane card-edge connections seat into standard Allen-Bradley 1771 I/O chassis slots.
TECHNICAL INFORMATION
Installation Guidelines
- Seat the module firmly into any designated 1771 I/O chassis slot.
- Disconnect all power sources before inserting or removing the module from the chassis.
- Fasten the 1771-CAS power cable to the 12-pin latch connector.
- Route feedback wiring away from high-voltage cables to reduce electrical interference.
TECHNICAL INFORMATION
Configuration Guidelines
- Verify resolver wiring continuity before energizing the 1771-PS7 power supply.
- Confirm that connected resolver stators match the 2.5-kilohertz output excitation frequency.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1771 I/O chassis backplanes.
- Operates with Allen-Bradley IMC 120 motion control systems.
- Requires the Allen-Bradley 1771-PS7 external power supply module.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1771 I/O chassis backplanes. Operates with Allen-Bradley IMC 120 motion control systems. Requires the Allen-Bradley 1771-PS7 external power supply module.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the primary function of the Allen-Bradley 1771-HR module?
The 1771-HR provides Sine and Cosine excitation signals to IMC 120 resolver feedback stators for position tracking.
Which power supply and cabling does the 1771-HR require?
It requires a 1771-PS7 power supply module connected via a 1771-CAS cable to the 12-pin connector.
What is the market reference price for the 1771-HR?
Observed market reference pricing is approximately $268.00 USD for refurbished units. This figure is an indicative market reference only and is not a final quotation.
What is the signal delay time upon power-up?
The module features a maximum signal delay time of 2 seconds from power-up to output.
