ES-D508 8A 3 Phase ES Series Easy Servo Driver

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ES-D508 fully digital microstepping stepper motor driver with encoder feedback input. Suits medium-sized, 3 phase stepper motors up to 8.0 A.

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The Leadshine ES-D508 is the smallest of the ES-D series easy servo drives. It can take 20 to 50 VDC input voltage and output 0.5 to 8.0 A continuous load-based current. It is capable of driving NEMA 17, 23, 24 and 34 (1-2 stacks) easy servo motors (stepper motors with encoders) with the position loop closed in real time.

Note: this driver suits 3 phase stepper motors, like our MOT-180 and MOT-181. It doesn't work with bipolar or unipolar stepper motors.

Based on latest DSP technology and adopting Leadshine's advanced control algorithm, ES-D508 easy servo drive applies servo control on easy servo motors. When paired with an easy servo motor, it combines features of both open loop steppers & brush-less servo systems, and offers many unique advances features for excellent motion control system performance.

Similar to servo drives in traditional brush-less servo systems, an ES-D508 easy servo drive takes encoder feedback from a driven ES-M series easy servo motor to close the position loop and eliminate the possibility of loss of movement synchronization. Therefore, loss of steps which limits adoption of stepper systems is totally eliminated in ES-D508 driven easy servo systems. Compared with constant output current in open loop stepper drive, output current from an ES-D508 servo drive to the driven motor is load based. When torque requirement is low, the output current is automatically lowered to the level of "just enough". But when the torque requirement is high, an ES-D508 easy servo drive can boost the output current quickly, up to 8.0A. This can significantly improve control system response time, offer excellent acceleration performance, and reduce motor heating by as much as 50% over open-loop stepper systems. Also, there is no torque reservation needed for an ES-D508 driven easy servo system. In an ES-D508 driven easy servo system, it always allows 100% torque implementation available from the driven easy servo motor and thus improves system high speed performance by as much as 30% over comparable open loop stepper systems. In addition, smoothness and quietness are also significantly improved in ES-D508 driven easy servo systems over steppers.

Compared with traditional brush-less servo systems, cost for ES-D508 driven easy servo systems is significantly lower. They also outperform comparable traditional brush-less servo systems for the features of much higher low and middle speed torque, (ideal for CNC machining operations) high standstill stiffness, no hunting (shaking), no overshooting, and almost zero settling time. In addition, plug-and-play setup for almost all applications makes ES-D508 driven easy servo system much simple to set up, over hard-to-configure brush-less servo systems which usual involve configurations of tens of parameters.

When an ES-D508 easy servo drive is implemented with a Leadshine ES-M series easy servo motor, there is no configuration needed for almost all applications. The output resolution of ES-D508 with the output resolution defaulted to output resolution of 2,000 pulses per resolution (equal to 10 micro-step in 2-phase stepper systems). With the Windows configuration software, ProTuner, an advanced user can also set custom settings of resolution, current & position loop parameters, idle current percentage, etc.

ES-D508 driven easy servo systems have been widely adopted by many Leadshine OEM clients to upgrade their open-loop stepper systems or replace brush-less servo systems in industries such as CNC machinery, electronics, semiconductor, medical, textile, robotics and lab automation.


The main advantages over traditional servo and open loop stepper systems are:

  • The stepper motor provides torque at low speeds, which is when you need it for milling or cutting
  • The feedback from the encoder ensures no lost steps and allows the motor to be driven as load demands
  • The feedback and control algorithm allow much higher top speeds than open loop stepper systems
  • The system maintains a stable holding position without oscillation after completing positioning


  • Step and Direction control
  • Closed position loop for no loss of movement synchronization
  • High torque at starting and low speed
  • No torque reservation
  • Reduces the torque margin required for motors in your system
  • High stiffness at standstill
  • Significantly reduced motor heating
  • Smooth motor movement and extra low motor noise
  • Quick response, no delay and zero settling time
  • Support for PUL/DIR and CW/CCW control signals
  • Over-current, over-voltage, position following error protections

Parameter tuning tools, including ProTuner (Windows based setup software) can meet different tuning environments or requirements. The LSK-001 programming cable and ProTuner Software is required to tune the drive.

Input voltage: 36 VDC (20 to 50 VDC)

Output current: 0.5A (Max. 8.0 peak)

Pulse input frequency: 0 to 200kHz

Logic signal current: 10mA (7 to 16 mA)

Isolation resistance: 500 MΩ

Operating environment: 

  • Environment: Avoid dust, oil fog and corrosive gases
  • Ambient temperature: 0 to 50°C (32 to 122°F)
  • Humidity: 40 to 90%RH
  • Operating temperature: 70°C (158°F Max)

Storage temperature: -20 to 65°C

Weight: 280 g

Dimension: 116 x 69 x 27 mm


To connect this driver to a matching Easy Servo motor, you'll also want power and encoder extension cables.

3 meter
5 meter
8 meter
10 meter

Programming Cable:

The drive can be tuned with the ProTuner software and an RJ-12 to DE-9 serial cable.

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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