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Red rectangular stepper motor driver with terminals and label

Autonics Corp

Autonics Corp A3K-S545 5-Phase Stepper Motor Driver

SKU CH-PN9S-X6JBV MPN A3K-S545

Drives a 5-phase stepper motor with 0.72°/0.36° step angles and 2.4 kgf·cm holding torque

  • Labor warranty1 Year
  • Product typeTest Equipment
  • Color and finishRed
  • Number of items1 pack
  • Sold asBox
  • Parts warranty3 Years
  • Precise motion control with 0.72° full-step resolution
  • Smooth microstepping at 0.36° half-step angle
  • Reliable torque delivery rated at 2.4kgf·cm
  • Low winding resistance of 2.2Ω for efficient current flow
  • IP30 protection guards internal components from solid objects

5-Phase Stepper Motor Driver

The Autonics A3K-S545 is a 5-phase stepper motor driver supplied new in a single-unit box. It provides a basic step angle of 0.72° in full-step mode and 0.36° in half-step mode for precise positioning control. The driver delivers a maximum holding torque of 2.4 kgf·cm with a rated current of 0.75 A per phase. Winding resistance is specified at 2.2 Ω and rotor moment of inertia at 68 g·cm².

Suited for precision motion control

This driver suits engineers and technicians building or maintaining equipment that requires fine angular resolution from a 5-phase stepping system. The IP30 protection structure fits clean indoor environments such as laboratories or enclosed cabinets. It is not intended for applications needing higher torque output, different phase counts, or ingress protection against dust and water beyond the IP30 rating.

Pentagon wire connection

The winding uses a Pentagon connection topology, which dictates the wiring sequence and drive sequence compatibility for the 5-phase motor. Verify that your controller and motor wiring match this configuration before installation. The 3-year parts and 1-year labor coverage from the manufacturer applies to the unit.

How it compares

Measured against everything we stock in Electrical Trade Tools & Kits, at today’s prices. Recalculated every night.

Price $186.99
Pricier than about 76% of the 5,006 comparable items (median $95.99).

Specifications

Product
Brand nameAutonics
Model nameA3K-S545
Product typeTest Equipment
Color and finishRed
In the box
Number of items1 pack

Questions about this item

What step angles does the 5-phase driver support in full and half-step modes?

The driver supports a basic step angle of 0.72° in full-step mode and 0.36° in half-step mode.

What is the protection rating and physical mounting requirement for the IP30-rated driver?

The unit has an IP30 protection structure and requires a standard DIN rail or panel mount inside a suitable enclosure.

How do you wire the motor windings to the Pentagon connection terminals?

Connect the five motor leads to the corresponding Pentagon terminals matching the winding sequence; the common error is crossing adjacent phase wires.

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