Precision Motion Control Solution — Allen-Bradley 1746-HSTP1 | SLC 500 Series
Where This Product Is Used
The Allen-Bradley 1746-HSTP1 is a dedicated stepper motor control module for the SLC 500 programmable controller platform. It is widely deployed across industries where precise, open-loop positioning is required without the cost overhead of a full servo system. Typical application environments include:
- CNC Machining & Milling Centers — Axis positioning for X/Y/Z table movement in legacy CNC retrofits and semi-automated machining cells.
- Packaging & Labeling Lines — Indexing conveyors, label applicators, and film-feed mechanisms requiring repeatable step counts.
- Textile & Printing Machinery — Web tension control, print-head positioning, and fabric feed systems.
- Semiconductor & Electronics Assembly — Pick-and-place gantries, wafer handling, and PCB drilling fixtures.
- Pharmaceutical Dispensing Equipment — Syringe pumps, vial filling stations, and blister-pack indexers.
- Material Handling & Sortation — Diverter gates, shuttle carts, and pallet transfer units on automated warehouse lines.
- Food & Beverage Processing — Portion-control conveyors, rotary fillers, and capping machines.
Technical Specifications
| Catalog Number | 1746-HSTP1 |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Platform | SLC 500 I/O Chassis |
| Module Type | Single-axis Stepper Control (Open-loop) |
| Output Signal | Step & Direction (differential line driver) |
| Max Output Frequency | 250 kHz (step pulse) |
| Control Modes | Preset Position, Velocity, Home-to-Limit, Registration |
| Backplane Current Draw | 250 mA @ 5 VDC; 75 mA @ 24 VDC |
| External Power | 24 VDC (user-supplied) |
| Encoder Feedback Input | Not supported (open-loop only) |
| Slot Width | Single-slot SLC 500 I/O module |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5–95% non-condensing |
| Weight | Approx. 400 g |
| Certifications | UL Listed, CE Marked, CSA Certified |
Why Engineers Specify This Model
- Native SLC 500 Integration — Communicates directly over the SLC backplane using standard MSG and ladder-logic instructions; no external motion controller or gateway required.
- High-Speed Step Output — 250 kHz maximum pulse rate supports micro-stepping drives for smooth, low-vibration motion profiles.
- Multiple Control Modes — Preset position, velocity, home-to-limit, and registration modes cover the majority of industrial positioning tasks from a single module.
- Deterministic Execution — Motion commands execute synchronously with the SLC scan cycle, ensuring repeatable timing critical in packaging and dispensing applications.
- Cost-Effective Positioning — Delivers reliable open-loop positioning at a fraction of the cost of a closed-loop servo axis, ideal for applications where load inertia is well-characterized.
- Proven Field Reliability — Thousands of units installed globally across automotive, food, and electronics manufacturing since the mid-1990s; extensive spare-parts ecosystem.
- Simple Commissioning — Configured entirely through RSLogix 500 ladder rungs; no separate motion-configuration software or drive tuning required.
Complete System Bill of Materials
A fully functional stepper axis using the 1746-HSTP1 typically requires the following components:
- 1746-HSTP1 — This stepper control module
- SLC 500 Chassis — e.g., 1746-A4, 1746-A7, 1746-A10, 1746-A13
- SLC 500 Power Supply — e.g., 1746-P1, 1746-P2, 1746-P4
- SLC 500 Processor — e.g., 1747-L20, 1747-L30, 1747-L40, 1747-L541
- Stepper Drive — Compatible step/direction drive (e.g., Parker Compumotor, Applied Motion, Leadshine)
- Stepper Motor — NEMA 17, 23, or 34 frame matched to load torque requirements
- 24 VDC Power Supply — For module I/O power and drive logic supply
- Limit Switches — Home, overtravel positive/negative (wired to module inputs)
- Shielded Cable — For step/direction signals between module and drive (≤ 10 m recommended)
Compliance & Industry Standards
- UL 508 — Industrial Control Equipment (UL Listed)
- CSA C22.2 No. 142 — Process Control Equipment
- CE Marking — EMC Directive 2014/30/EU; Low Voltage Directive 2014/35/EU
- RoHS Compliant — Restriction of Hazardous Substances (EU Directive 2011/65/EU)
- REACH — Substances of Very High Concern (SVHC) declaration available on request
Quality Assurance & Sourcing
All 1746-HSTP1 units offered through Konmask.com undergo a structured inspection and verification process before dispatch:
- Visual inspection for physical damage, corrosion, and counterfeit indicators
- Label and date-code verification against Allen-Bradley manufacturing records
- Functional power-on test confirming backplane communication and LED status
- Anti-static packaging with humidity indicator card
- Traceable documentation available upon request (test report, CoC)
Units are sourced from decommissioned OEM lines, authorized distributors, and verified industrial surplus channels. We do not sell grey-market or rebranded product.
How to Source This Part
- Add to Cart — Select quantity and proceed to checkout directly on this page.
- Request a Quote — For orders of 3+ units, email [email protected] for volume pricing and lead-time confirmation.
- Urgent Requirement — Call or WhatsApp +0086 19859288691 for same-day shipping availability and expedited freight options.
- System Integration Support — Our engineers can assist with BOM validation, drive compatibility checks, and RSLogix 500 configuration guidance at no additional charge.
Application-Specific FAQ
Q: Can the 1746-HSTP1 control a servo drive in step/direction mode?
A: Yes. Any servo drive that accepts step & direction input (e.g., Yaskawa Sigma-7 in pulse-train mode, Delta ASDA-B2) can be commanded by the 1746-HSTP1, effectively providing closed-loop position holding while using open-loop motion commands from the SLC.
Q: What is the maximum cable length between the module and the stepper drive?
A: Rockwell recommends ≤ 10 m (33 ft) for the step/direction cable. Use shielded twisted-pair and connect shield at the drive end only to minimize noise coupling.
Q: Is the 1746-HSTP1 compatible with SLC 5/01, 5/02, 5/03, 5/04, and 5/05 processors?
A: Yes. The module is compatible with all SLC 500 processor families. RSLogix 500 v8.10 or later is recommended for full instruction set support.
Q: Can two 1746-HSTP1 modules be used in the same chassis for a two-axis system?
A: Yes. Multiple modules can occupy separate slots in the same chassis. Each module is addressed independently and controlled by separate ladder rungs, enabling multi-axis coordination through the SLC program.
Q: What happens if the stepper motor stalls — does the module detect it?
A: No. The 1746-HSTP1 is an open-loop controller and does not detect motor stall. For stall detection, add an encoder feedback device wired to a high-speed counter module (e.g., 1746-HSCE) and implement position-error checking in ladder logic.
Q: Do you provide a warranty on surplus/refurbished units?
A: Yes. All units carry a 90-day functional warranty. If a unit fails under normal operating conditions within the warranty period, we will replace or refund at our discretion. Contact [email protected] to initiate a claim.
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