DCS-100-A v.3 is microcontroller based drive with opto-isolated analog output ±10V. It is used to drive third party servo amplifiers. The servo driver DCS-100-A converts the step/dir digital control signals into a +/-10V analog control signal and it is suitable for upgrading (retrofit) of CNC machines which has robust servo power amplifiers for AC or DC motors with analog input.

Drive is based on 16-bit microcontroller with implemented PID control algorithm. As the feedback of DC motor position an incremental encoder with phase-shifted square signal (quadrature encoder) is used. Encoder interface enables 1x, 2x and 4x encoder resolution.

Adjustment of all parameters is performed by using the configuration software ServoTune3.

The input control interface enables control via opto-isolated lines in next modes:

  • Encoder follower in 1x, 2x and 4x decoding, and
  • Via analog input within the range 0–5 V with and without feedback.

Built-in soft start function enables DC motor 1s after power on in order to decrease power surge on start.

There is an opto-isolated digital output on drive, named Track Error which is activated if preset value of tracking error offset is exceeded. That output can be used for activation of external circuit for servo motor emergency stop.

Use power supply 8–24 VDC. Drive has reverse polarity protection.

pdfDCS-100-A V.3 User's manual


When working with the DCS-100-A servo drive, there are dangers and risks that can lead to damage to the equipment, as well as injuries to persons in the environment.

During the installation procedure of the DCS-100-A servo drive, it is necessary to have a high level of knowledge in the field of electronics, computer technology and mechanics. It is also necessary to observe safety measures when working with high voltage and mechanical hazards caused by working with heavy and dangerous machines.
Supply voltages over 50 VDC can be danger of death.
Drive should not be used in places where, in case of failure, people safety is in danger, financial losses are big, or there exist other losses. During drive operation should be used all required precautious.
Does not exclude the possibility that this document contains errors. In addition the manufacturer assumes no responsibility for any damage caused by the use of this drive, which has occurred as a result of compliance or non-compliance with this instruction manual.


DCS-100-A v.3

Connector positions on drive DCS-100-A

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ServoTune3 is software for setting parameters on a DC servo driver with analog output DCS-100-A. How to use the ServoTune3 software is described in detail in the user manual for the DCS-100-A servo driver.

IMPORTANT NOTE: Support for DCS-100-A analog output servo driver is enabled from software version ServoTune3 v3.09.

Download ServoTune3 software for setting DCS-100-A servo driver parameters:

zipServoTune3 v3.10 - December 2018.

zipServoTune3 v.3.09 - Added support for DC servo driver with analog output DCS-100-A.


Characteristics Description
Type Closed loop DC Servo drive with opto-isolated analog output ±10 V and PID control algorithm
Number of axis 1
Input control interface

Digital control modes via opto-isolated lines STEP/DIR/ENA, CW/CCW/ENA and Encoder follower (1x, 2x and 4x)
Analog 0–5 V with and without feedback

Frequency of STEP commnad < 600 kHz
Command line pulse width > 0,5 μs
Command line current ~10 mA at 5 V
Output Opto-isolated analog ±10V
Auxiliary outputs

- Opto-isolated Tracking Error
- Two inverted PWM signals (TTL)
- Enable output (TTL)

Feedback Incremental encoder with phase-shifted square signal
Incremental encoder resolution x1, x2 i x4 multiplication, settable by configuration software
Incremental encoder power supply Source on drive +5 V DC / 250 mA
Servo drive parameter set up Via IDC10 connector and isolated programming interface IPI-USB
Power supply 8–24 VDC / 500 mA – reverse polarity protection
Dimensions (W x L x H) 102 mm x 77 mm x 31 mm
Weight ~150 g

NOTE: specifications are subject to change without notice


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