VEM tech

MINIATURE ENCODERS,

MINIATURE ENCODERS

SMALL ENCODER SE16,

SMALL ENCODER SE16

5V power supply single ended output optical model.

SE16 is an high performance, low cost, hollow shaft encoder family, very easy to assembly on shaft diameter from 1.5mm to 3.175mm. 
According to the model, the device provides one or two (or two plus index) incremental encoding square wave signals outputs.
The device if perfect for speed and incremental position detection on all the applications requiring high reliability, very good performances, easy
and fast assembly and low cost.
The encoder is available with several resolutions, shaft diameters and output circuits.
In this data sheet the 5V power supply, single ended output, optical model is described.
It is possible to choose between connector or a radial cable output.

Features

• Dimensions: 16.6 mm diameter, 20.3 mm height.

• Quick and easy assembly without touching sensitive components

• Output channels: 2 (quadrature)

• Power supply: 5 VDC ( different power supply available )

• Output type: TTL compatible, push-pull or line driver, open collector

• Resolution up to 200 CPR (Counts Per Rotation)

• No signal adjusting required

• Maximum shaft diameter: 3.175 mm

• Operating temperature: -20°C to +85 °C

• Frequency: up to 60 kHz

• RoHS compliant

SMALL ENCODER SE22,

SMALL ENCODER SE22

5V,12V,24V power supply single ended output optical model. 
SE22 is an high performance, low cost, hollow shaft encoder, very easy to assembly on shaft with diameter ranging from 1.5 mm to 8.0 mm.
According to the model, the device provides one or two (or two plus index) incremental encoding square wave signals outputs. The device is very suitable for speed and incremental position detection on the applications requiring high reliability, very good performances, easy and fast assembly and a good performance/price ratio. The encoder is available with several resolutions, shaft diameters and output circuits. In the current data sheet the 5V power supply, single ended output, optical model is described.
The encoder is also available with 12÷24V power supply and differential output (line-driver); for aggressive
environments a magnetic model is going to be developed.

Features
 

• Dimensions: 22.6 mm diameter, 21.0 mm height.

• Quick and easy assembly without touching sensitive components

• Output channels: 2 (quadrature) + 1 optional index-channel

• Power supply: 5 VDC (other power supply values also available)

• Output type: push-pull (5V,12V,24V) - TTL compatible, open collector (5V).

• Resolution up to 300 CPR (5V,12V) e 360 CPR (24V) (Counts Per Rotation)

• No signal adjusting required

• Maximum shaft diameter: 8.0 mm

• Operating temperature: -20 °C to +80°C (24V),+75°C (12V),+85°C (5V).

• Frequency: up to 60 kHz

• RoHS compliant

SMALL ENCODER SE22HR,

SMALL ENCODER SE22HR

SE22HR is a very high performance hollow shaft optical encoder; a high resolution is achievable in a small space with a good performance price ratio. The assembly is very easy, the available shaft diameters are in the range from 1.5 to 8.0 mm. The device provides two incremental encoding square wave signals outputs A and B and a tracked index. The device is very suitable for speed and incremental position detection in the applications requiring high reliability, very good performances, with easy and fast assembly.

Features

• Dimensions: 22.6 mm diameter, 21.0 mm height

• Quick and easy assembly, no signal adjusting required

• Resolution: up to 2048 CPR (Counts Per Rotation)

• Output channels: A and B (quadrature) tracked index

• Power supply: 5 Vdc

• Output type: push-pull or line driver

• Frequency: up to 220 kHz

• Maximum shaft diameter: 8.0 mm

• Operating temperature: -20 °C to 85 °C

• RoHS compliant

SMALL ENCODER SE30,

MAGNETIC ENCODER,

MAGNETIC ENCODER

Customized solutions

SME (Small Magnetic Encoder) is an high performance miniaturized encoder family
with good robustness when operating in harsh environments due to extreme temperature, vibrations, dirtiness and so on.
VEM tech offers customized solutions: hollow shaft encoder (for a direct assembly onto a motor rear) or alternatively shaft encoders according to the customers request. 

Several interface solutions are available.

Incremental square wave encoder

• Resolution: 128 CPR (Counts Per Rotation)

• Output channels: 2 (quadrature)

• Power supply: 5 Vdc

• Output type: TTL compatible.

• Operating temperature: -30 °C to +120 °C

Absolute encoder

• Resolution: 10 bit (0.352 °m)

• Ramp output: from 0.5 Vdc to 4.5 Vdc in 360° shaft turn

• Power supply: 5 Vdc

• Resistor load: > 10 kΩ

• Capacitor load: < 100 pF

• Operating temperature: -30 °C to +120 °C

ENCODER DISCS AND STRIPES,

ENCODER DISCS AND STRIPES

VEM tech develops and supplies encoder discs and strips for many "motion control" applications with high reliability. In the early stage of the development VEM tech works with the Customer in order to optimize the best product suitable for the application.

The main characteristics are:

• transmissive or reflective technology

• operating temperature: -40 °C · 100 °C

• thickness: 0.18 mm, 0.5 mm (with coating material)

• coating protection for any moisture or mechanical damage (on customer request)

• resolution: up to 360 LPI

• tolerances: pitch error <1 um, eccentricity <2 um

• material: film and metal

• supply of assembled CWs on hub or washer (on customer request)

MOTOR ENCODER ASSEMBLY GROUPS,

MOTOR ENCODER ASSEMBLY GROUPS

VEM Tech designs and manufactures motor-encoder assemblies through the integration of an encoder with an electric motor to provide an optimized solution for our customers.

Advantages of a motor-encoder module:

• integrated solution

• optimized product

• fully tested device

• product ready for the assembly

Encoder data

• Encoder resolution: 512 CPR (Counts Per Rotation)

• Encoder type: 2 channel incremental encoder, sqaure wave outputs, 90°e phase shift

• Encoder supply: 5 Vdc, 18 mA typ.

• Encoder output: TTL

Motor data

• Voltage supply: 32 V

• No load speed: 6150 RPM

• No load current: 0.110 A

• Stall torque: 235 mN*m

• Stall current: 5.15 A

• Motor resistance: 6.8 ohm

• Torque costant Kt: 49.4 mN*m/A

• Motor power max: 37.5 W

• At max. motor efficiency (67.8%):
  Speed: 5360 RPM, Currnet: 0.75 A, Torque: 30 mN*m, W: 16.8

LINEAR SENSOR,

LINEAR SENSOR

Linear Absolute Position Sensor.
This sensor uses an electronic board with microprocessor and a magnetic detectors strip to define the absolute position of
the external magnet with respect to the measuring bar.

This device is very robust, it can bear total immersion, it has no moving electrical parts and it is very suitable for heavy duty
environments.

ELECTRONIC BOARD DESIGN

VEM tech develops and manufactures electronic boards for custom-made projects by providing competitive solutions to customers in the fields of industrial automation, motion control and oven control according to the following development phases:

• product specification analysis

• feasibility study

• HW/SW design and prototypes production

• boards testing solutions