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Table of Contents
Related Manuals for Re US3
Summary of Contents for Re US3
- Page 1 .E N G Ultrasonic sensor USER’S MANUAL...
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Page 3: Table Of Contents
S.p.A. Contents Warnings ............................1 Ultrasonic sensor advantages ......................2 Ultrasonic sensor limitations......................2 Typical applications......................... 2 “Pulse-echo” measuring method ....................3 Factors which influence measurement..................3 Technical characteristics ........................ 4 Installation ............................4 Functioning of the device........................ 8 General ..............................8 Control panel............................8 LED bar ...............................9 Status LED (green)..........................9... -
Page 4: Warnings
The plant builder may include the present manual in the documentation for plant use. Re S.p.A. reserves the right to update its production and/or manuals without updating products already sold and previous manuals. -
Page 5: Ultrasonic Sensor Advantages
S.p.A. Ultrasonic sensor advantages Ultrasonic sensors are extremely advantageous in comparison with other sensor types: They are able to “see” any non-sound-absorbent material and some kinds of sound-absorbent materials. Material colour has no effect on reading. Target object surface has no effect on reading. Ultrasonic sensors work in most environmental conditions (e.g. -
Page 6: Pulse-Echo" Measuring Method
“Pulse-echo” measuring method Every 100 milliseconds the US3 sensor emits an ultrasonic pulse at a frequency of 125kHz. The pulse propagates in the air until it hits the target (positioned in front of the sensor) whose distance is to be measured. -
Page 7: Technical Characteristics
2. Never leave a break in the cable shielding. If a connector or joint has to be inserted in the US3 cable, make the connection as shown as shown in the diagram: 3. - Page 8 S.p.A. 4. Avoid using single wires connections to the US3 cable, if it is possible. 5. Below is the sensor directivity graph, with an action cone of approximately +/-10°. Install the sensor so that inside said cone there are no: objects other than the target, other ultrasound sources, draughts.
- Page 9 S.p.A. 6. Use the metal bracket supplied to support the US3, making sure that the capsule is parallel with the plane at a tangent to the surface to be measured. Connect the sensor body to the nearest machine earth point with a suitable cable, as illustrated below.
- Page 10 S.p.A. 7. Be sure that between the sensor body and the machine framework there is electrical continuity 8. Adjust the sensor angle so that the target is at the centre of the action cone. Tighten the knob to secure Rev.12/04/11 7/23...
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Page 11: Functioning Of The Device
Functioning of the device General US3 ultrasonic sensor is suitable to read reel diameters: by a simple calibration it is able to convert a distance measure in a reel diameter measure providing a diameter proportional analogue output. It is equipped with an analogue setpoint input which makes US3 a strength self-governing regulation system: you can modify material strength connecting regulated analogue output to a brake and varying the associated tension. -
Page 12: Led Bar
S.p.A. LED bar During programming: shows the number of the function selected, with the corresponding LED lit (the first from the bottom for F1, the second for F2, etc.). Outside programming: indicates the level of the proportional or regulated output depending on the mode set in function F8. -
Page 13: Programming Menu
S.p.A. Programming menu Below is a list summarising the device programming functions available. For more details, see from page To access programming press ENTER for several seconds, the green LED remains lit and the first LED on the LED bar lights up (function F1). To scroll through the menu of the programming functions, use the ENTER key. -
Page 14: Calibration
S.p.A. Calibration To operate as diameter reader / regulator, the US3 ultrasonic sensor must be calibrated. By measuring the distance from the reel, the sensor can measure the reel diameter. In particular, when the reel diameter is at its maximum size the sensor reads the minimum distance. As the diameter is reduced, the distanced measured increases, until the maximum distance corresponding to the minimum diameter (see images below). -
Page 15: Field" Calibration By Maximum And Middle Diameter
S.p.A. “Field” calibration by maximum and middle diameter Where must be done It is a field calibration. Sensor is mechanically installed in its own definitive position. How calibrate Enter the programming menu (see on page 10); Press ENTER to position on function F2; Carry out function F2 for field calibration as described on page 15;... -
Page 16: Lab" Calibration By Maximum Diameter And Axis
It is not necessary any measurement instrument. When you order the device if you know the distances between sensor (capsule surface) and maximum diameter reel and between regulator and rotation axis, US3 could be sold already calibrated for the specific application. -
Page 17: Configuration Of The Sensor As Distance Reader
S.p.A. Configuration of the sensor as distance reader To use the sensor as distance reader you have to: enter the programming menu (see on page 10); press ENTER to position on function F7; the red LED shows the current value of the function: if the red LED is lit the inversion is already enabled, if the red LED is off the inversion is disabled: press SET key to enable the inversion;... -
Page 18: Detailed Description Of The Functions
S.p.A. Detailed description of the functions Outside programming, the green LED flashes to indicate that the device is operating normally. To access the programming menu, hold down ENTER for several seconds. The green LED will stop flashing and remain lit together with the LED on the LED bar corresponding to function F1. Nominal values are: Regulated diametrical output: set on Volt... -
Page 19: F3 - Middle Diameter Calibration - Only For Field Calibration
S.p.A. F3 - Middle diameter calibration - only for field calibration Important : Before calibrating, make sure that there are no objects other than the target in the sensor’s action cone. Position a known diameter reel in front off the sensor (diagram on page 12). The red LED indicates the presence of the target: if the red LED is off the target is present and calibration can be performed correctly if the red LED is flashing the target is not detected and calibration is impossible... -
Page 20: F5 - Setting 1 St Alarm Threshold
S.p.A. F5 - Setting 1 alarm threshold Important : Before calibrating, make sure that there are no objects other than the target in the sensor’s action cone. This function allows you to set a threshold diameter below which the sensor activates the first of the two alarm outputs. -
Page 21: F8 - Led Bar Mode
S.p.A. F8 - Led bar mode The red LED shows the current value of the function: if the red LED is lit the LED bar shows the level of the regulated output if the red LED is off the LED bar shows the level of the proportional output Press SET key to set the desired value. -
Page 22: Setpoint
S.p.A. Setpoint The input allows to vary US3 sensor output according to your own requirements. Input signal value must be between 0V and 10V. It is also possible to connect an external potentiometer, as indicated in Electrical connection diagram section. -
Page 23: Electrical And Mechanical Characteristics
S.p.A. Electrical and mechanical characteristics Power supply: 24Vdc (18-30V dc including ripple) protection against polarity reversal Mean power: about 2W, at 24Vdc Analog input: 0÷10Vdc for working curve Regulated analog output: 0÷10Vdc (R >1kΩ) 4÷20mA (R <300Ω) Proportional analog output: 0÷10Vdc (R >1kΩ) Alarm outputs:... -
Page 24: Mechanical Dimensions
S.p.A. Mechanical dimensions Rev.12/04/11 21/23... -
Page 25: Electrical Connection Diagrams
S.p.A. Electrical connection diagrams Configuration with setpoint potentiometer (see on page 19) +VDC Vref BROWN PROP. OUT ORANGE REG. OUT BLUE SETPOINT IN GREEN Setpoint potentiometer (≥ 10KΩ) RS485 + (A) VIOLET RS485 - (B) GREY Coil relay Vrelay ALARM 1 OUT WHITE Coil relay ALARM 2 OUT... -
Page 26: Guarantee
S.p.A. Guarantee Re S.p.A. guarantees this device against all defects relative to the materials and manufacturing for a period of 12 months from the date of delivery. Should your device develop operating faults during the guarantee period, please contact the Company’s agent in your country, or, if this is not possible, contact Re S.p.A. - Page 28 Re S.p.A. Controlli Industriali Via Firenze, 3 – 20060 BUSSERO (MI) ITALY Fax (+39) 02 95 03 89 86 Technical support: Tel. (+39) 02 95 24 30.300 - E-mail: support@re-spa.com Sales support: Tel. (+39) 02 95 24 30.200 - E-mail: sales@re-spa.com www.re-spa.com...
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