- Draw wire Linear Transducer (DWDT) Is a Linear Distance Measuring Transducer for a Travel upto 1500mm.
- Due to Flexibility of the Wire the product is more adorable for application with long stroke measurement.
- DWDT- X has a Flexibility to have a contactless absolute Hall’s magnetic encoder (for maximum 150mm length) or Muliturn potentiometer attached to one end of the DWDT-X.
- This model of DWDT has a USP of having detachable potentiometer / hall magnetic encoder which gives the user a flexibility to change the sensor / calibrate the mechanism as per the requirement and as when needed.
- Potentiometer / hall magnetic encoder Which is coupled with a Drum on which the rope has been wound very precisely. On pulling the Rope the encoder shaft rotates and hence gives the information of the linear motion.
- Since the Rope has been connected on the drum based on the appropriate tention of spring hence there is no error due to Back lash or play
Technical Parameters
| Parameter | Value |
|---|---|
| Rope Length | 150mm or 1200mm (other stroke on request) |
| Maximum Vibration | 20g - 11ms/2g |
| Maximum Shaft Loading | 20N Axial, 50N Radial |
| Drum Size (Length of rope in One turn of Potentiometer) | 158mm |
| Potentiometer (for 1200mm) | PAVAN make Model 2010 (100ohms to 10k ohms). |
| Magnetic Absolute Encoder (for 150mm) | POTEL make Rotary Miniature or Rotary Smart Angle Sensor |
| Maximum speed of pulling rope | 33mm/ second |
| Operating Temperature | 0 - 60deg |
| Storage | -20 to 70 deg |
| Protection Class | IP 64 |
Material
| Housing | Alluminum |
| Rope : | Stainless Steel |
| Rope Guide | NYLON. |
Ordering Information
DWDT-X-Potentiometer/ Magnetic encoder part number-Stroke Length-Any Specific Info.
Mechanical Drawing
Electircal Analog Output
| Parameter | Value |
|---|---|
| Supply Voltage (Vsupply) | 5Vdc(+/- 10%) or 3.3Vdc |
| Supply Current | 20mA |
| Response time | 50mS |
| Resolution | 12bit |
| Load Resistance | Minimum 10k ohms |
| Output (Voutput) | 3% to 97% Vsupply (Ratiomatric) |
| Linearity | 1% Independent Linearity ( Available 0.5% on request) |
Pulse Width Modulation Output
| Parameter | Results |
|---|---|
| Supply Voltage (Vsupply) | 5Vdc(+/- 10%) or 3.3Vdc |
| Supply Current | 20mA |
| Frequency | 200Hz, 500Hz, 1K Hz or 2 Khz based on requirement |
| Resolution | 12bit |
| Output (Voutput) | 0% to 100% duty Cycle |
| Linearity | 1% Independent Linearity ( Available 0.5% on request) |
Redundant Analog Output
The Graph is just for indicative purpose. Offset between Output 1 and Output 2 can be change or made
| Parameter | Results |
|---|---|
| Supply Voltage (Vsupply) | 5Vdc |
| Supply Current | 50mA |
| Electrical Angle | Default 359.92 deg. (Customization possible) |
| Response Time | 1kHz |
| Resolution | 12bit |
| Output (Voutput) | 0 to 5Vdc ( Redundant Output) (ideally 3% to 97% Vinput) |
| Load Resistance | Minimum 10K Ohms |
| Linearity | 1% Independent Linearity ( Available 0.5% on request) |
Incremental Output
| Parameter | Results |
|---|---|
| Supply Voltage (Vsupply) | 5Vdc / 3.3Vdc |
| Supply Current | 20mA |
| Incremental Output | |
| Electrical Speed | 10000RPM Max. |
| PPR (Pulse Per Revolution)(A&B) | 25,50,100,200,256,300,400,500,512,1000,1024 A & B Pulse Lag each other by 90deg.(TTL) |
| Output (Voutput) | 0 to 5Vdc ( Redundant Output) (ideally 3% to 97% Vinput) |
| Index pulse Z | 1 pulse per RPM (TTL) |
Low Speed Quadrature Output
| Parameter | Results |
|---|---|
| Supply Voltage (Vsupply) | 5Vdc / 3.3Vdc |
| Supply Current | 20mA |
| Incremental Output | |
| Electrical Speed | 400RPM Max. |
| PPR (Pulse Per Revolution)(A&B) | 8,16,32,64,128,256,512,1024,2048 A & B Pulse Lag each other by 90deg.(TTL) |
| Output (Voutput) | 0 to 5Vdc ( Redundant Output) (ideally 3% to 97% Vinput) |
| Index pulse Z | 1 pulse per RPM (TTL) |
Serial Peripheral Interface Sensor
The RHSS12-XSPI is a Absolute encoder which acts as a slave and communicate with master micro controller as per the standard Protocol of SPI.
As per standard protocol of SPI RHSS12-XSPI communicate with master protocol when the MOSI pin is active high or 3FFF hex data is sent on the bus and the CS pin need to toggle from low to high for only one clock pulse.
RHSS12-XSPI communicate in 16 Bit of Transmission. After each cycle of communication it is compulsory to toggle CS pin from high to low.
RHSS12-XSPI has a provision of Dual Output first SPI communication and PWM mode of communication 14 Bit and 12 Bit of Resolution respectively.
Number of sensors can be connected in daisy chain mode of 4 wire or (n+3 wire connection). please contact Mr. Pavan Kinariwala(pavankinariwala@gmail.com) for more information on the same.
RHSS12-XSPI will communicate the angle information in below pattern.
| Parameter | Results |
|---|---|
| Input Voltage (Vinp) | 5Vdc / 3.3Vdc |
| Maximum clock Frequency | 50k Hz. |
| Digital pin Input / output level including address pins. VDD- 5Vdc (Vinp 5Vdc) VDD- 3.3Vdc (Vinp -- 3.3Vdc) |
1 -- VDD (5V or 3.3V) -0.7V 0 -- GND +0.4V |
| PWM Frequency | 1 Khz. |
Two Wire Communication sensor
The RHSS12-XSPI is a Absolute encoder which acts as a slave and communicate with master micro controller as per the standard Protocol of SPI.
As per standard protocol of SPI RHSS12-XSPI communicate with master protocol when the MOSI pin is active high or 3FFF hex data is sent on the bus and the CS pin need to toggle from low to high for only one clock pulse.
RHSS12-XSPI communicate in 16 Bit of Transmission. After each cycle of communication it is compulsory to toggle CS pin from high to low.
RHSS12-XSPI has a provision of Dual Output first SPI communication and PWM mode of communication 14 Bit and 12 Bit of Resolution respectively.
Number of sensors can be connected in daisy chain mode of 4 wire or (n+3 wire connection). please contact Mr. Pavan Kinariwala(pavankinariwala@gmail.com) for more information on the same.
RHSS12-XSPI will communicate the angle information in below pattern.
| Parameter | Results |
|---|---|
| Input Voltage (Vinp) | 5Vdc / 3.3Vdc |
| Maximum clock Frequency | 10k Hz. |
| Digital pin Input / output level including address pins. VDD- 5Vdc (Vinp --6 to 35Vdc or Vdc) VDD- 3.3Vdc (Vinp -- 3.3Vdc) |
1 -- VDD (5V or 3.3V) -0.7V 0 -- GND +0.4V |
| PWM Frequency | 1 Khz. |
Sensor with connector
Threads on shaft.
