Product Overview
The Allen-Bradley 1771-HSN is a servo controller module from the PLC 5 series, designed for high-speed information processing in industrial automation. This module does not include a memory cartridge and requires an Allen-Bradley 1771-HM or 1771-HMA plug-in memory cartridge for operation. It is UL listed and CSA certified, ensuring compliance with rigorous safety standards. The 1771-HSN occupies a single slot in a 1771 I/O chassis and is engineered for applications requiring specialized I/O coordination, such as large regulatory and sequential control tasks.
Technical Specifications Breakdown
Key parameters for the 1771-HSN are listed below for quick reference:
| Feature | Specification |
|---|---|
| Module Type | 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
Typical applications include packaging lines, material handling systems, and precision assembly stations where coordinated axis control is critical. The 2 ms/axis update period enables responsive adjustments, while the 250 KHz differential input supports high-resolution encoder feedback for accurate positioning. In large regulatory control systems, the module coordinates multiple axes to maintain process consistency.
Installation & Setup Guidance
Install the 1771-HSN in a single slot of a 1771 I/O chassis. Before powering up, insert a 1771-HM or 1771-HMA memory cartridge into the module. Use the included 1771-WA and 1771-WB wiring arms to connect field wiring without disconnecting terminations. Ensure the backplane current draw of 1.7 A does not exceed the chassis power supply rating. Set the fuse voltage to 120 Volts as specified. Configure the pulse capture time between 50 and 9.999 microseconds based on encoder resolution. Verify the analog command outputs (±10 VDC) are properly scaled for the servo drive.
Maintenance & Reliability
Operate the module within a clean industrial environment at 0 to 60 °C (32 to 140 °F) with 5 to 95% noncondensing relative humidity. Inspect the wiring arms periodically for secure connections. The module withstands 30g operating shock, but avoid mechanical stress during handling. No internal user-serviceable parts exist; contact qualified personnel for any issues.
Compatibility & Integration
The 1771-HSN integrates with PLC 5 controllers using the 1771 platform. It supports communication networks such as DH+, ControlNet, and EtherNet/IP through the backplane. The module works with digital and analog I/O modules in the same chassis, enabling coordinated control across diverse field devices.
Selection Guide & Purchasing Advice
When selecting the 1771-HSN, confirm that your system includes a compatible memory cartridge (1771-HM or 1771-HMA). Verify the chassis slot availability and power supply capacity. For replacement or new installations, AutoDCSTech stocks this module and can advise on lifecycle status. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Troubleshooting & Common Issues
If the module fails to initialize, check that a memory cartridge is properly inserted. Verify the backplane connection and power supply output. If the servo axis does not respond, confirm the analog command wiring and encoder input frequency are within the 250 KHz limit. For erratic behavior, inspect the wiring arms for damage and ensure the operating temperature remains within 32 to 140 °F.
Availability & Condition at AutoDCSTech
| Part Number | 1771-HSN |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
