ACS806 Brushless Servo Motor Drive

ACS806 Brushless Servo Motor Drive

SKU: SMC-410

Brushless servo motor driver for 50 to 400 W, AC brushless motors with encoders.

  • Manufacturer: Leadshine
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Leadshine's fully digital AC servo drive ACS806 is a brushless servo motor drive designed to be a drop-in replacement for stepper drives. It's a match to our MOT-455 400 W brushless servo motor.

The drive uses an 32-bit DSP with an advanced control algorithm. The input signals are industry-standard pulse and direction signals, allowing the drive to be used in existing stepper or servo systems without require a change of controller. The ACS806 offers high precision, high speed and high reliability performance, and is widely used in CNC machines, industrial robotics, inkjet printers and engraving machines. A built-in controller can be used for testing and tuning.

PC based and handheld configuration & tuning tools can meet different tuning environments or requirements. Use the LSK-001 cable with the Protuner software (download link below) to tune the drive.


  • Standard PUL/DIR and CW/CCW control signals
  • Opto-isolated inputs support single-ended and differential signals
  • Suits 50 to 400 W brushless motors with quadrature encoders
  • Internal brake resistor chopper
  • FOC-SVPWM technologies
  • PC based and handheld configuration tools
  • Self-test function with trapezoidal velocity profile
  • Encoder power output
  • Following error lock range adjustable
  • Over-voltage, over-current, encoder failure protections
  • 10 latest failures self-record function
  • Surface-mount technology

Supply voltage: 18 to 80 VDC

Peak output current: 18 A

Continuous output current: 6 A

Position following error: ±1 count (with ACM series servo motor) 

Velocity accuracy: ±2 RPM (with ACM series servo motor)  

Logic signal current: 7 to 16 mA

Electronic gear rate: 1/255 to 255

Pulse input frequency: 600 kHz

Isolation resistance: 500 MΩ 

Current provided to encoder: 100 mA

Operating environment: 

  • Environment: Avoid dust, oil fog and corrosive gases
  • Ambient temperature: 0 to 50 °C
  • Humidity: 40 to 90 %RH
  • Vibration: 5.9 m/s² Max

Storage temperature: -20 to 65 °C

Weight: Approx.450 g

Dimension: 166 x 97 x 32 mm

The driver comes with a multicore lead and a DA-26 connector to suit the Digital & Analog I/O port. The cable provides the signals listed below



Tuning parameters will depend on the motor used and the system the motor is installed in, but a table of good starting values when using the MOT-455 is shown below. The current loop tuning requires a password. The default password is "654321".

Current loop

Position loop
Encoder lines
CAM Numerator
CAM Denominator
Position following Error limit

Brake Resistor:

In most of the cases brake resistor isn't required. In cases where the motor is turning a large rotational inertia and requires rapid deceleration, the regenerated power may raise the voltage enough to trip the driver into over voltage protection. A brake resistor can be attached to the drive to dissipate the excess energy. The ACS806 contains internal chopper circuitry that activates the brake resistor only when required. A typical brake resistor would be 75 Ω, 200 W.

    • SKU
    • Weight
      0.6 kg
    • Dimensions (L x W x H)
      28 x 12 x 9 cm

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

Full Terms and Conditions

By placing an order with Ocean Controls, you agree to be bound by our Terms and Conditions of Trade.

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