VRO Encorder Readout

Velmex VRO™ Delivers Ultra-Precise Position Readouts

The Velmex VRO Digital Readout delivers precise position information generate by linear or rotary incremental encoders. This compact, microprocessor uses the latest OLED display and DSP micro-controller technology. While the VRO was designed for use with differential type encoders, it is fully compatible with single-ended encoders. It easily and accurately reads the position signals generated from the encoder connected to either a one or two axis motion control system.

The VRO's advance technology delivers an exact, consistent performance and insures they are very efficient, reliable and easy to program. It's LED display has high visibility, high resolution and low energy consumption.

Velmex VRO™ Features

Additional VRO operating features:

• Automatic back-up of current settings.
• Sleep mode saves energy, extends life.
• Internal self-diagnostics makes troubleshooting easy.
• Compatible with all 5v incremental encoders.

Encoders interface with the VRO through Schmitt triggers and digital filtering with quadrature decoding returning instantaneous results at maximum resolution. The Velmex VRO Readout System can be used in conjunction with Velmex's VXM™ Motor Controller and with both manually-operated or motorized UniSlides®, BiSlides® and XSlides™.

VRO™ Configurations

	VRO-1 – One Axis Encoder Readout – Reads and reports on an encoder connected to a single axis Velmex stage.
	VRO-2 – Two Axis Encoder Readout – Reads and reports on encoders connected to two different axis. Multiple VRO-2 can be used with multi-axis stages.
	VRO-1B – One axis VRO-1 version with tilt base. Allows for easier reading.
	VRO-2B – Two axis VRO-2 version with tilt base.

Also available:

• VRO-1H - One axis VRO-1 version with T-slot hinge for mounting on BiSlide framing

• VRO-2H - Two axis VRO-2 version with T-slot hinge for mounting on BiSlide framing

For information on obsolete Controllers and Readouts see the Controls Archive

For information on Encoders available, please see the Encoder Page.

VRO™ Specifications

Physical
	Enclosure:	Aluminum Black Anodized, IP30 rated
	Weight (VRO-1)	1.00 lbs.	(459 g)
	Weight (VRO-2)	1.06 lbs.	(481 g)
	Height (VRO-1/2)	4.27"	(108.5 mm)
	Height (VRO-1B/2B) with Tilt Base	5.50"	(140 mm)
	Width (all versions)	6.87"	(174.5 mm)
	Depth (VRO-1/2)	1.89"	(48 mm)
	Depth (VRO-1B/2B) with Tilt Base	3.5"	(89 mm)
AC Power Adapter:
	Weight	0.29 lbs.	(300 g)
	Height	1.8"	(46 mm)
	Width	1.4"	(36 mm)
	Length (without cord)	2.8"	(73 mm)

Display:
Format	2 Line x 16 Character
Type	OLED, Green
Contrast Ratio	2000:1 (readable in direct sunlight)
Character Height	0.35" (9 mm)
Viewing Angle	160 degrees
Half-life	50,000 hours
Tilt Range (Tilt Base)	75 degrees
Performance:
Maximum displayable count:	±999,999,999
Maximum internal count:	±2,147,483,647
Maximum count rate:	1.6 MHz
Encoder Inputs:	4x quadrature differential line receivers, Schmitt trigger with low pass digital filtering
Maximum power output:	330ma per encoder
	RoHS compliant
Electrical Requirements:
AC Power Adapter	90-264VAC 0.4A 47-63Hz
VRO	5VDC ±2% 1.0A
Power Connector	5.5 mm (type N) 2.5 mm ctr pin positive
Encoder:	4.87 to 5.13 VDC, 330 ma maximum input
	Differential or Single Ended Interface
Environmental:
Operating Temperature:	0°-120° F (-18°-49° C)
Relative Humidity:	10%-90% (noncondensing)
RS-232 Port Configuration	8 Data, No Parity, 1 Stop, 9600 baud rate default (19200, 38400 baud rate user settable)

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VRO Serial Number

VRO Readouts have serial numbers which can be located on the right side of the device.

Options/Accessories for use with the Velmex VRO™

Various options and accessories are available to configure a VRO Encoder Readout for specific applications.

	Tilt Base - Optional tilt base changes the tilt angle for added visibility and operator comfort. More details on VRO Components Page.
	T-slot Hinge – T-slot hinge allows mounting and placing were most convenient. With the T-slot, the VRO can be easy added to the support structure that might be used with a Velmex BiSlide®. Once mounted the VRO can be tilted for easy viewing. More details on VRO Components Page.
	T-slot Mounting Flange – T-Slot mounting flange facilitates mounting of the VRO virtually any where needed for a fixed permanent installation. For example mounting in a panel box or on a wall. Placement of the VRO would be fixed. In order to adjust the tilt use the T-slot hinge to mount instead. More details on VRO Components Page.
	Power Supply - The universal power supply is standard with all VRO Readouts. It can also be ordered separately.
	Power Strip – Convenient power strip for plugging in multiple VROs and VXMs™.
	International Power Adapters – a variety of international-rated power adapters are available.
	Assorted Cable Adapters - Various adapters are available to connect to computer via USB and to various brands of linear and rotary encoders.
		USB to RS232 - allows the VRO Readout to communicate with the computer. (10 ft.) Encoder Cables - connects the encoders to the VRO to transfer position data. (Specified based on travel length.)
	End Caps – Rubber end caps protect the corners of the VRO Readout and the component connections from accidental damage.
	Vinyl Bag – A clear vinyl bag protects the VRO from fogging in high moisture situations and/or transporting outdoors.
	VRO-Tab 2 – Hand-held, two button remote which provides a convenient capture (upload VRO reading to computer) and reset of the VRO for faster data collection. Additional information on VRO Components Page.
	C.O.S.M.O.S.™ (Computer Optimized Stepper Motor Operating System) can be used in conjunction with a Velmex VRO™ Readout. It coordinates communication between the computer and the VRO readout. While its primary function is to aid set-up and programming of the VXM™ Controller to control Velmex motorized positioning systems, COSMOS can send commands to emulate the buttons on the front panel VRO Readout. See Software for more information on COSMOS, along with computer notes, drivers and VXM programming examples.
	Encoders - A variety of encoders that can be read by the VRO are available from Velmex that deliver an ultra-precise reading of the position of the carriage (slider) of various Velmex stages. Encoders offered include magnetic, inductive or rotary modes. For details, please see the Encoder page.

 

VRO Readout Downloads

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"Right Click" to download.

 

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For more information on obsolete Controllers and Readouts see the Controls Archive

Velmex VRO™ Applications and Examples

These are examples of Velmex products. If you wish a similar product, please contact us with your specific application specifications (travel distance, payload, hours per day in use, resolution, speed range, etc.). You can use the Request Assistance form. The example displayed may be a custom configuration, designed to the customer's specifications; and not offered as a standard product. Custom configurations could contain custom, externally-fabricated components.

Pictured in our gallery are examples that show the VRO connected to various encoders on other Velmex products. Product and accessory offering is subject to change and availability.

Example Key Code	Meaning	Example Key Code	Meaning
A	Manually Operated	M	Motorized
S	Standard	C	Custom Configuration
B	BiSlide	U	UniSlide
X	XSlide	R	Rotary Tables
T	XY Tables	TT	Turntables
E	Elevating Tables	FS	Fun Stuff (Ingenious, Cool, or Just out of the ordinary applications)

 

Examples of other Velmex products can be found on the Examples page or in the Examples section for each product.

 

 

 

 

 

Many questions can be answered by reviewing the "Features", "Model / Series", "Specifications", "Options / Accessories" and "Technical Documentation" sections for each product line. Additional FAQs about product comparisons, product construction, purchasing and shipping can be found on the company FAQ page.

VRO™ Readout FAQs

For how many axes can the VRO Readout interpret positioning?

The VRO can provide a readout from linear and rotary encoders for one or two axes. The axes can be configured in X, XY and XZ. An XYZ or other multi-axis configuration would require additional VRO Readouts.

Are there specific encoders the VRO will work with?

The VRO was designed for differential type encoders, however, it is fully compatible with single-ended encoders.

What standard of measurement does the VRO Readout use?

The VRO can report position in either Imperial English or metric. It can count revolutions. It also can report in degrees when connected to a rotary encoder.