Allen-Bradley

Allen-Bradley 41391-701-51 SMC Soft-Start Driver Board

SKU 41391-701-51

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Allen-Bradley

  • Product No.: 41391-701-51

  • Country of origin:United States

  • Product Type: SMC Soft-Start Driver Board

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 900g

  • Dimensions: 3.5cm x 13cm x 14.5cm

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The Allen-Bradley 41391-701-51 is an industrial printed circuit board designed to function as a dedicated SMC Soft-Start Driver Board. It operates within solid-state motor controller assemblies to regulate gating signals and handle gating power distribution during the acceleration and deceleration phases of industrial motor control. Equipped with onboard transformers, this mountable PC board isolates control circuitry from high-power line potentials while managing internal voltage stepping. The interface includes precise pin header terminal groups to route logic signals from the main controller straight to the external thyristor or power semiconductor blocks, stabilizing current distribution across heavy manufacturing setups.

Features

  • Integrated on-board transformers providing local voltage translation and electrical isolation.
  • Dedicated mountable layout built for secure integration inside standard motor controller enclosures.
  • Multi-point terminal interface containing discrete multi-pin connectors to distribute internal gate triggers and logic feedback loops.

Applications

  • Smart Motor Controller (SMC) systems and solid-state industrial starters.
  • Heavy-duty motor acceleration and soft-starting control panels.
  • High-power semiconductor gating and phase control assemblies.

Technical Specifications

Parameter Specification
Manufacturer Allen-Bradley
Model Number 41391-701-51
Product Type SMC Soft-Start Driver Board
Form Factor Mountable PC Board
Onboard Power Isolation On-board transformers
6-Pin Connectors 2x
8-Pin Connectors 2x
4-Pin Connectors 3x

Connections/Interfaces

Connector Type Quantity Function
6-Pin Connector 2x Interface for logic control signals and gating channels
8-Pin Connector 2x Main processing connections and power paths
4-Pin Connector 3x Auxiliary monitoring tracks and diagnostic loops

Installation Guidelines

  • Chassis Mounting: Secure the PC board firmly using designated mounting points to maintain rigid positioning inside the industrial controller cabinet and mitigate physical strain.
  • Interface Alignment: Match all 4-pin, 6-pin, and 8-pin terminal headers with corresponding factory wire harnesses, checking indexing keys to avoid misalignment faults before locking down junctions.
  • Electrostatic Grounding: Utilize appropriate ESD-safe handling procedures, including a grounded technician wrist strap, when performing system setup or maintenance to guard solid-state components against transient discharge.

FAQ

What is the primary role of the onboard transformers on this driver board?

The on-board transformers provide isolated voltage translation, protecting the low-voltage logic components on the board from high-potential line paths during soft-start control cycles.

How many multi-pin terminal groups are available on the interface of the device?

The interface is engineered with a total of seven terminal blocks, containing two 6-pin connectors, two 8-pin connectors, and three 4-pin connectors for system integration.

Are there any special static handling steps required during installation?

Yes, because the driver board incorporates solid-state electronic paths, it must be handled inside an ESD-protected zone using a grounded wrist strap to prevent static damage.

View all FAQs →

Quantity
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
Reviews
1 of 3
Only 8 item(s) left in stock
Quantity
View full details

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Color pattern
Greyish White
Country of origin
United States
Power source
DC Power

Technical knowledge

First TwinCAT PLC Project on a Beckhoff IPC

Build and verify a first TwinCAT PLC project on a Beckhoff IPC. This checklist covers target selection, EtherCAT discovery, I/O mapping, safe activation, restart tests, and commissioning records.

Commissioning OPC UA in KEPServerEX: A Field Checklist

A practical commissioning sequence for KEPServerEX OPC UA connections: define data ownership, test tags locally, configure endpoint and certificate trust, limit access, then verify failure recovery...

Set a PLC Commissioning Laptop IP Without Losing Access

Commissioning an Ethernet-connected PLC often starts with the laptop, not the controller. Learn how to record existing settings, choose a temporary address, test connectivity, and restore the plant...

Designing Automation for Combustible Dust Hazards

Combustible dust controls require more than alarms. Learn how to map dust generation, select instrumentation, design interlocks, handle failed feedback, test safe states, and maintain the full...

Hairpin Stators: Benefits, Limits, and Inspection

Hairpin windings raise slot fill and support compact traction motors, but conductor geometry, AC losses, insulation damage, weld quality, and cooling determine whether the design meets its targets.

Using Ansible for Controlled SCADA Server Changes

Use Ansible to standardize SCADA server changes without expanding OT risk. This guide covers inventories, idempotent playbooks, staged testing, credentials, logging, and practical rollback controls.