This document will follow the process involved in mounting a MicroE Veratus sinusoidal encoder on a linear stage and the connecting it to an Elmo Gold DC Whistle Servo Driver.

Required Items


Built with the new VeraPath”” technology of MicroE encoders, the Veratus Series delivers best-in class reliability, signal stability, anti contamination tolerance in a compact package with unparalleled ease of use.

Elmo Gold DC Whistle Servo Driver

The DC Whistle is a super compact OEM panel mounted version of the Whistle. It weighs just 273 g (only 9.6 oz) and supports up to 20 A of continuous current. Its high density enables the drive to deliver 3.3 kW of peak power and 1.6 kW of continuous power. Based on Elmo’s SimplIQ Motion Control technology, the DC Whistle is capable of operating in position, velocity and current modes and it offers a wide range of feedback and 1/0 options. With Elmo’s Composer software, users can easily perform drive setup, configuration, tuning, analysis and programming. The drive operates on DC power.


Computer with Elmo Studio software loaded

Elmo Studio software is available for download on the Elmo website. This is used lo set up the drive for the first time.


Power Source

Review the documentation for the all the components to determine the correct voltage and amperage to run your equipment.


Before you begin, have the manuals for each product available for review.


Wire encoder-to-drive connector (Port B)

Wire encoder-to-drive connector - Port B - Digital & Analog Encoder
Wire encoder-to-drive connector - Port B - Digital & Analog Table

Mount the Tape Scale

Mounting Surface Preparation

4.1.1 Clean surfaces, following instructions provided in the Tape and Glass Scales Installation Manual.

Tape Scale - Mounting Surface Preparation

Installing the Scale

4.2.1 Use the mounting holes for the encoder to attach the Scale Applicator Tool using two M2.5 tapped holes.
4.2.2 Move the stage carriage to the extreme left of travel to start.
4.2.3 Peel back the clear adhesive cover on the bottom of scale approximately 1 inch.
4.2.4 Insert the scale with the black on blue arrows pointing the same direction as the while on black arrow on the applicator tool.

Figure 1 - Tape Scale - Insert the scale

Figure 1

4.2.5 Feed the scale through the tool as you pull the carriage to the right removing the clear adhesive cover as you go.

4.2.6 You may need to remove the tool to get the last of the scale through the tool and onto the surface.

4.2.7 Use your finger to press the scale onto the surface over the full length to make sure of the best adhesion.

Figure 2 - Tape Scale - Press the scale onto the surface

Figure 2

4.2.8 Once the scale is installed, you can remove the blue protective film from the top of the scale.

Install Veratus Encoder

Figure 3 - Install Veratus Encoder

Figure 3

5.1.1. Attach the encoder to the stage carriage using two M2.5 button head screws.

Figure 4 - Attach encoder to stage carriage

Figure 4

5.1.2. Use the Z-height Shim Spacer to set the proper gap between the sensor’s riser and the top of the scale (1.9mm +/-1). Refer to the Veratus Interface Drawing for details.

Power Up and Calibrate Veratus

Figure 5 - Power up and calibrate Veratus

Figure 5

6.1.1 Turn on the power source to the ELMO Drive.

6.1.2 You should see a green LED on the encoder. Move the carriage through its whole motion to ensure the LED stays green throughout.

Elmo Drive Settings

Set up communications

Figure 6 - Open ELMO Application Studio II

Figure 6

7.1.1 Open ELMO Application Studio II software (Highlighted in Figure 6)

Figure 7 - Select System Configuration

Figure 7

7.1.2 With a USB Cable connected to the drive and PC. Select System Configuration (Highlighted in yellow in figure 7).

Figure 8 - Select Connection Type

Figure 8

7.1.3 Select Direct Access USB from the pull down menu.

Figure 9 - Select Communications Port

Figure 9

7.1.4 Select the correct communications port (The USB driver will report a virtual com port when it initializes).

Figure 10 - Connect to Drive01

Figure 10

7.1.5 Right Mouse Click on the Drive01 and choose to Connect.

Figure 11 - Choose Drive Setup and Motion

Figure 11

7.1.6 Choose Drive Setup and Motion from the left hand window and then select Expert Tuning. Note: The list of points below the Drive Expert Tuner are designed to be set one after the other moving down the list (Figure 11).

Figure 12 - Single Axis, linear motor, operated in linear mode

Figure 12

7.1.7 This Application used a single axis, linear motor, operated in linear mode (Figure 12).

Figure 12a - Motor Settings

Figure 12a

7.1.8 These are the setting used for this particular motor, your values may be different.

Set your encoder type.

Figure 13 - Set your encoder type

Figure 13

7.2.1 Select Feedback Settings under the Drive Setup and Motion Tab.

If our Encoder has a Quadrature Output you would choose the option on top and you would be asked to enter either the lines or counts per revolution. In this case we chose the Analog Sin/Cos, Port B option and you will enter 20 in the micro/cycle. You can also choose your Multiplication factor.

Figure 14 - Select Feedback Settings

Figure 14

7.2.2 After you step through the rest of the settings and verifications you should finish by Clicking Drive Save (show in the top left of Figure 14)


This document gives a brief description of how to set up an ELMO drive with a MicroE Veratus encoder using ELMO’s APPLICATION STUDIO software. It should be used in conjunction with the most recent installation manuals for both components.