Technical Specifications Breakdown
Key parameters for the 1771-HTE are listed below for quick reference:
| Feature | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Series | PLC 5 |
| Part Number | 1771-HTE |
| Product Type | Encoder Termination Module |
| Mounting | DIN-type rail |
| Maximum Cable Length from Controller | 10 cable feet (3 m) |
| Cable Type | 16GA, 1 pair twisted, shielded |
| Cable Lengths Supported | 85 ft |
| Dimensions | 6.25 x 3 in. (15.8 cm x 7.5 cm) |
| Power Supply Voltage | 24 V DC |
| Connectors | Pluggable |
| User Connections | Routed through termination panels |
| Maximum Cable Length (with external power) | +5 VDC encoders: 90 cable feet; +15 VDC encoders: 90 cable feet; Resolvers: 90 cable feet |
| Maximum Cable Length (no external power) | 40 cable feet for +5 VDC encoders |
Industry Applications
Packaging and Material Handling
In high-speed packaging lines, encoder feedback is critical for precise cut-to-length and registration control. The 1771-HTE supports cable runs up to 90 feet with external power, allowing placement of encoders near moving machinery while keeping the controller in a safe, centralized cabinet. This reduces signal noise and installation complexity.
Conveyor Systems
For conveyor systems requiring accurate speed matching or positioning, this module provides flexible cabling options. With support for +5 VDC and +15 VDC encoders, as well as resolvers, it adapts to various feedback devices without additional signal conditioning.

Installation & Setup Guidance
Mount the 1771-HTE on a standard DIN rail within the control panel. Use the specified 16-gauge, one-pair twisted, shielded cable for connections between the module and encoder. Keep the cable from the controller to the module within 10 feet (3 m) to maintain signal integrity. For longer encoder runs, provide external power to achieve up to 90 feet. Without external power, limit +5 VDC encoder runs to 40 feet. Use pluggable connectors for fast wiring and easy maintenance.
Maintenance & Reliability
Regularly inspect cable connections for wear or corrosion, especially in environments with vibration or moisture. Verify that the DIN-rail mounting remains secure. Periodically test encoder signal quality using a diagnostic tool to detect early signs of cable degradation. The module's compact design (6.25 x 3 inches) fits neatly in crowded panels, simplifying access.
Reliable Signal Interfacing for PLC 5 Systems
Industrial automation systems demand precise encoder signal integrity for accurate position and speed feedback. The Allen-Bradley 1771-HTE encoder termination module provides a robust interface between encoders and PLC 5 controllers, ensuring reliable data transmission in demanding environments.

Compatibility & Integration
This module is designed exclusively for Allen-Bradley PLC 5 systems. User connections route through termination panels for organized wiring. The pluggable connectors allow quick module replacement without rewiring.
Selection Guide & Purchasing Advice
When selecting an encoder termination module, verify compatibility with your encoder type and cable length requirements. AutoDCSTech stocks this module and can confirm availability and lifecycle status. Contact our team for assistance with your specific configuration.
Availability & Condition at AutoDCSTech
| Part Number | 1771-HTE |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
