Rotary Encoders

Rotary Encoders are devices that convert a motion into an analogue or digital signal. These devices are electro-mechanical sensors that monitor the position of the shaft or axle and convert it into the signal readable for digital devices. Rotary Encoders are also known as shaft encoders.
Rotary Encoders can be divided into 2 main types:
· Absolute – Digital Absolute encoders produce a unique digital code for each angle of shaft. These type of encoders maintains position information when a system power is off. The position of encoder is available again on applying power. The relationship between the encoder value and the physical position of the controlled machinery is set at assembly, the system does not need to return to a calibration point to maintain position accuracy.
Types of absolute encoders:
o Mechanical
o Optical
o Magnetic
o Capacitive
· Incremental – These encoders accurately records the changes in position of the shaft but does not power up with fixed relation between encoder state and physical position. The point where the counting begins depends on the external device counting system and not the position of the encoder. To provide useful position information, the encoder position must be referenced to the device to which is attached.
Rotary Encoders are commonly used in many applications that require precise shaft unlimited rotation. It means they can be used across industries such as robotics industry, electronic industry, and machinery production but are also very popular parts of many household devices.

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Description Price Pulses Per Revolution Encoder Technology Maximum Revolutions Output Signal Type Shaft Type Shaft Diameter Supply Voltage Resolution Steps Per Revolution IP Rating Interface Overall Height Overall Width Overall Depth
RS Stock No. 146-2902
Mfr. Part No.XCC1406TR11R
HK$2,568.74
Each
units
1024 Incremental 9000rpm Digital Hollow 6mm 5 V dc - - IP52 RS422 25mm 52 (Dia.)mm 29mm
RS Stock No. 146-2903
Mfr. Part No.XCC3510PS84CBN
HK$7,660.35
Each
units
- Absolute 6000rpm CANOpen 25-bit Solid 10mm 24 V dc 25 Bit 8192Steps IP64 CANOpen 95mm 58mm 110mm
RS Stock No. 179-9861
Mfr. Part No.XCC1514TS11Y
HK$2,915.37
Each
units
1024 Incremental - Digital Through Hollow - 30 V dc - 1024Steps IP65 Push-Pull 45mm 45mm 92.5mm
RS Stock No. 146-2905
Mfr. Part No.XCC3510PV84FBN
HK$6,926.92
Each
units
4096 Absolute 6000rpm PROFIBUS-DP 25-bit Solid 10mm 24 V dc 25 Bit 8192Steps IP64 PROFIBUS-DP 86mm 60mm 110mm
RS Stock No. 179-9862
Mfr. Part No.XCCPM23121L2
HK$593.29
Each
units
- Incremental - - - - - - - IP65 - - - -
RS Stock No. 179-9863
Mfr. Part No.XCCR158RDA06
HK$147.63
Each
units
- - - - Through Shaft - - - - - - - - -