Product Overview
The Allen-Bradley 1771-HS3CR is a 3-axis servo controller module from the Rockwell Automation PLC 5 series. This module provides precise motion control for multi-axis applications, helping reduce system costs by consolidating control into a single unit. It is designed to operate with the 1771-PS7 power supply module (120V AC, 1A) and uses a 1771-WA wiring arm for connections.
Technical Specifications Breakdown
Key parameters for the 1771-HS3CR are listed below for quick reference:
| Feature | Specification |
|---|---|
| Module Type | 3 Axis Servo Controller Module |
| Fuse Voltage | 120 Volts |
| Max Input Frequency | 250 Kilohertz Differential Input |
| Outputs | +/- 10 Volt DC Analog Command |
| Slots | 2 Slots Per ES |
| Module Update Period | 2 ms/axis |
| Backplane Current | 1.7 Amperes |
| Wiring Arm | 1771-WA |
| Pulse Capture Time | 50-9.999 Microseconds |
| Dimensions | 3.5 x 6.5 x 2.0 in (89 x 165 x 51 mm) |
Industry Applications
By integrating multiple axes into one module, users reduce hardware costs and simplify wiring. The 250 KHz differential input supports high-speed encoder feedback, improving positioning accuracy and reducing scrap rates in high-throughput environments.
Installation & Setup Guidance
Install the 1771-HS3CR in any 1771 I/O chassis using two slots per ES. Connect the 1771-PS7 power supply via a 1771-CAS 9-pin cable. Use the 1771-WA wiring arm for field wiring. The front-panel RS-232 port enables program upload/download and connection to T45/T50 ODS pendants for debugging. Ensure the backplane current draw does not exceed 1.7 Amperes to avoid overloading the chassis power supply.
Maintenance & Reliability
Periodically inspect the module and wiring arm for signs of wear or corrosion. Operate within the specified humidity range (5-95% non-condensing) to prevent moisture damage. The battery-backed memory cartridge (1771-HM3A) retains AMP parameters and MML programs; replace the battery per Rockwell guidelines to avoid data loss. Regular inspection of encoder and resolver connections helps maintain signal integrity.
Compatibility & Integration
The 1771-HS3CR integrates with the PLC 5 platform and accepts encoder and resolver feedback signals. It supports RS-232 communication for programming and debugging. The module works with the 1771-PS7 power supply and 1771-HM3A memory cartridge. Use the 50-pin I/O connector for fast I/O and E-stop signals. Ensure compatibility with your existing 1771 chassis and backplane.
Selection Guide & Purchasing Advice
When selecting the 1771-HS3CR, verify that your system has available slots and adequate backplane current. This module is a cost-effective solution for three-axis control, reducing the need for multiple single-axis controllers. For purchasing, contact AutoDCSTech to check current stock and lifecycle status. Our team can help confirm compatibility with your existing Allen-Bradley setup.
Troubleshooting & Common Issues
If the module fails to communicate, check the RS-232 cable and port connections. Verify that the 1771-PS7 power supply is providing 120V AC and that the backplane current is within limits. If encoder feedback is erratic, inspect the differential input wiring for noise or loose connections. For program download issues, ensure the battery-backed memory cartridge is properly seated and has sufficient charge.
Availability & Condition at AutoDCSTech
| Part Number | 1771-HS3CR |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
