RM08 super small non-contact rotary encoder

RM08 super small non-contact rotary encoder

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The RM08 is a compact, super small high-speed rotary magnetic encoder designed for use in harsh environments. The noncontact two part design removes the need for seals or bearings ensuring longterm reliability and simple installation.

 

The encoder consists of a magnetic actuator and a separate encoder body. Rotation of the magnetic actuator is sensed by a custom encoder chip within the body, and processed to give incremental, SSI or linear voltage outputs.


The encoder chip processes the signals received to provide resolutions to 12 bit (4,096 counts per revolution) with high operational speeds. The compact encoder body is just 8 mm in diameter and provides dirt immunity up to IP68.


The RM08 encoder has been designed for direct integration to high volume OEM applications and can be used in a wide range of applications including motor control and industrial automation.

RM08A - Analogue
Two sinusoidal output signals (90° phase shifted, single ended)
Max. speed 30,000 rpm
Connections
Signal Colour
Vdd Red 
GND Blue
Sin White
Cos Grey
RM08I - Incremental output, single ended, 5 V
Output signals A, B, Z (single ended)
Resolution 32, 64, 128, 256, 512, 1024, 2048, 4096 cpr
Max. speed 30,000 rpm
Accuracy ±0.3°
Hysteresis 0.17°
Connections
Signal Colour
Vdd Red 
GND Blue
Z White
B Green
A Grey
RM08S - Synchro serial interface (SSI), single ended, 5 V
SSI Data output Data (single ended)
SSI Clock input

Clock (single ended)

Resolution

5, 6, 7, 8, 9, 10, 11, 12 bit

Max. speed

30,000 rpm

Clock frequency

≤ 4 MHz

Accuracy

±0.3°

Hysteresis

0.17°

Connections
Signal Colour
Vdd Red 
GND Blue
Clock White
Data Green

 

RM08V - Linear voltage, 5 V
Resolution of DAC 10 bit
Max. speed 30,000 rpm
Nonlinearity 1 %
Output type and electrical variant
φFS 360° 180° 90° 45°
Clockwise VA VB VC VD
Counterclockwise VE VF VG VH
Connections
Signal Colour
Vdd Red 
GND Blue
Vout White
RM08A - Analogue
Power supply Vdd = 5 V ± 5 %
Power consumption

Typ. 26 mA

Sinusoidal outputs
Signal amplitude (A) 1.6 ± 0.4 V
Signal offset (Agnd) 1.55 ± 5 mV
Phase difference 90° ± 0.2°
RM08I - Incremental output, single ended, 5 V
Power supply Vdd = 5 V ± 5 %
Power consumption Typ. 26 mA
RM08S - Synchro serial interface (SSI), single ended, 5 V
Power supply Vdd = 5 V ± 5 %
Power consumption

Typ. 26 mA

RM08V - Linear voltage, 5 V
Power supply Vdd = 5 V ± 5 %
Power consumption

Typ. 26 mA

Output voltage 0 V to Vdd
Output load Max. 2 mA
All output types (AC, ID,SD and Vx)
Encoder housing material Aluminium
Encoder mass < 2 g (with 200 mm long wires)
Wire thickness AWG30
Magnet material SmCo (Sm17Co2), NiCuNi coated
Magnet mass 0.4 g
All output types (AC, ID,SD and Vx)
Operating and storage temperature -40 °C to +85 °C

Features

  • Super small size – 8 mm diameter body
  • Non-contact, frictionless design
  • 3.3 V or 5 V power supply versions
  • High speed operation to 30,000 rpm
  • Industry standard analogue sinusoidal, incremental, SSI and linear voltage output formats
  • Accuracy to ±0.3°
  • RoHS compliant (lead free)

Buy products by choosing the specifications

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Delivery time up to: 10 days

Total price:

$13.67

Availability: In stock

More than 10 pcs or need technical assistance? Contact for quote.