Product Overview
The Allen-Bradley 1746-HSTP1 is a SLC 500 SLC Stepper Controller Module from Rockwell Automation. This intelligent module integrates with other 1746 I/O modules and is compatible with SLC 5/01, 5/02, 5/03, 5/04, 5/05 and fixed style hardware with 2-slot expansion rack. It provides differential inputs and digital outputs with an input frequency of 250 kilohertz, making it suitable for precise stepper motor control in motion and positioning applications.
Technical Specifications Breakdown
Key parameters for the 1746-HSTP1 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number/Catalog No. | 1746-HSTP1 |
| Series | SLC 500 |
| Module Type | SLC Stepper Controller Module |
| No. of Axes | 1 |
| Compatible Interfaces | Stepper Motor Driver |
| Speed Range | 1 to 250,000 pulses per second |
| Acceleration | 1 to 2000 pulses per second Trapezoidal velocity profile |
| Acceleration Step Rate | 4 milliseconds or less |
| Inputs | Differential |
| Outputs | Digital |
| Input Frequency | 250 kilohertz |
| Backplane Current (5 Volts) | 200 milliamps |
| Backplane Current (24 Volts) | 90 milliamps |
| I/O Connection | 1746-HT and 1746-HCA |
| Step Response | 100 milliseconds in, 2.5 milliseconds out |
Industry Applications
Precision Positioning Systems
The differential encoder feedback verifies axis movement without closed-loop control, ensuring accurate positioning up to ±8,000,000 counts.
Micro-Stepping Drives
It interfaces directly with +5 or +15 V differential encoders and supports single-ended TTL and opto-coupler interfaces, making it versatile for various stepper motor driver setups.
Multi-Axis Coordination
Though a single-axis module, the 1746-HSTP1 can be integrated with other SLC 500 modules for multi-axis systems. Its compatibility with SLC 5/01 through 5/05 processors and 1746-ASB modules allows expansion into larger PLC systems for coordinated motion control.
Installation & Setup Guidance
Mount the module in a single slot of a SLC 500 chassis. Connect the I/O via 1746-HT or 1746-HCA cables. The module does not use DIP switches; all configuration is done programmatically. Ensure backplane current does not exceed 200 mA at 5 volts and 90 mA at 24 volts. The module supports differential encoder inputs (5V DC differential or 12-24V DC single-ended auxiliary inputs). For pulse train output, set the translator to accept digital outputs with 4 ms update time.
Maintenance & Reliability
Inspect the module periodically for dust accumulation on connectors and LED indicators. The storage temperature range is -40 to 85 °C, and operating temperature is 0 to 60 °C with relative humidity 5 to 95% non-condensing. Altitude rating is up to 200 meters. Thermal dissipation is 1.5 Watts. Use loopback diagnostics to verify pulse train commands to the translator.
Compatibility & Integration
This module is compatible with Allen-Bradley fixed style SLC products with 2-slot expansion and modular processors SLC 5/01, 5/02, 5/03, 5/04, and 5/05. Via the 1746-ASB module, it can be used in larger PLC systems. The feedback hardware adapts up to 250 kHz and interfaces with +5 or +15 V encoders.
Selection Guide & Purchasing Advice
When selecting the 1746-HSTP1, verify your processor compatibility and required pulse train speed. AutoDCSTech stocks this module and can advise on availability and lifecycle status. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Troubleshooting & Common Issues
LED indicators provide diagnostics for programming errors, normal/abnormal operation, and faulted systems. If the module does not respond, check backplane connections and ensure proper voltage supply. Use loopback diagnostics to test pulse train commands. For encoder feedback issues, verify differential signal integrity and cable connections.
Availability & Condition at AutoDCSTech
| Part Number | 1746-HSTP1 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
