Unitronics Servo Drives & Motors Quick Guide
Ofir Levi
Sep-26th, 2019 9:57

General restrictions

Do not plug or unplug connectors from servo drive when power is on.

Perform noise reduction and grounding properly.

The Servo motor is designed for indoor use.

Install the Servo motor in an environment which meets the following Conditions.

  • Free from corrosive and explosive gases.
  • Well-ventilated and free from dust and moisture.
  • Ambient temperature from 0 to 40℃.
  • Relative humidity from 26% to 80% (non-condensing).
  • Facilitates inspection and cleaning.

UMD Servo drive Model Designation:

UMD Servo Drive Nameplate

UMD-0000B / 0001B / 0002B / 0004B Ports:

Wiring the Servo Drive- One phase

CANbus pinout

Servo side -RJ45                                                                                                                                 

Use pin 7, 8 & 4.                                                 

            CANbus side 

H    =   Brown & White (7)

L     =  Brown (8)

-V    =  Blue (4)


  • A termination resistor of 121Ω between H & L
  • Make sure that you share 0V and Ground between the PLC and Servo.

Wiring the Servo- 3 phase:

Servo configuration.

Panel Operator

The panel operator is a built-in operator that consists of display section and keys located on the front panel of the servo drive.

Parameters setting, status display and execution of utility function are enabled using the panel operator.

The names and functions of the keys of the panel operator as follow:

Servo alarms can be reset by pressing the ENTER key when the panel operator in display mode.

Basic Mode Selection

The basic modes include status display mode, parameter setting mode, monitor mode, and utility function mode.

At first operation (Clear All Alarms)

You will get A47 Error - Absolute encoder battery Alarm:


  • Multiturn information of encoder is lost.   è  Set Fn010 to clear the A47 error.
  • The battery voltage is lower than the specified value of 2.5V   è  Replace the battery, and turn ON the power to the encoder.

To reset this Alarm clear Fn10 and Fn11 as follows:

Absolute Encoder Multiturn Data and Alarm Reset

Absolute Encoder Setup (Fn010, Fn011)

Setting up the absolute encoder in the following cases.

  • When starting the machine for the first time, set Pn002.2 to 0.
  • When an encoder error alarm (A.45~A.48, A.51) is generated.

Use the panel operator in the servo drive for setup as follow:

Initialize your Servo

Absolute Encoder Multiturn Data and Alarm Reset

Go to Fn10

Press the ENTER key, the display will be shown as below.

Press the MODE key to reset the absolute encoder multi turn data and alarm.

Thus the absolute encoder multiturn data and alarm reset is complete


This function will clear the absolute position of the encoder; the mechanical safety must be noted.

When the multiturn data is cleared, other encoder alarms will be reset at the same time. 

Absolute Encoder Related Alarms Reset.

Press the MODE key to select the utility function mode.

Press the UP or Down key to select the utility function number Fn011.

Press Enter (    ) key, the display will be shown as below

Press the M key to clear the alarms

Thus the absolute encoder related alarms reset is complete.

Note: Fn010, Fn011 only can be used when the Servo motor mounted with an absolute encoder.

Servo ID

Note that this procedure is only for setting the Servo`s ID, changing the setting of something else might harm the Servo`s functionality

Set the Servo ID to a different ID than ID1. Baud Rate

  • You change the baud rate of the communication to:
  • To change the baud rate, press a long press to the Enter button to enable editing, use the Up, Down buttons to change the index value.

Setting the Servo communication protocol:

Pn006 Bus type selection:

Make sure to select the value  [3] for CANopen which is basically the Default.

Error Pot/Not

Set Pn000 to 0110

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