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EMAX-RO Absolute Rotary Encoder (SSI / CANopen) Bearingless, wear-free and high-resolution for rotative applications

EMAX-RO features a very short design, so it's perfectly suited for use in cramped installation conditions and on direct drives.

  • Magnetic single-turn absolute encorder
  • Direct measurement on motor shaft or axis
  • High resolution 16,000 measuring steps / revolution
  • Diverse interfaces available: SSI or CANopen (standard), on request: RS422, RS422 (adressable), RS232 or CAN BASIC ELGO, in preparation: BISS-C
  • Additional incremental signals for highly dynamic drives
  • Non-contact, wear-free measuring principle

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Mechanical data

Measuring principleabsolute - rotative
Repeat accuracy± 1 increment
System accuracy in µm at 20 °Cstandard: ± (150 + 20 x L) ± 0.35°, option F10: ± (50 + 20 x L) ± 0.16°, L= measuring length in meters
Distance sensor / tapemax. 1.0 mm (without protection ring), max. 0.45 mm (with protection ring)
Sensor housing materialzinc die cast
Housing dimensions (L x W x H)62 x 40 x 20 mm
Required magnetic ringMR 00 051 030 206 0032 050 2 14021 (without protection ring), MR 00 052 030 206 0032 050 2 14021 (with protection ring)
 Max. measuring range360°
Type of connections12 pin M12 round connector (external)
Sensor cable5 m standard length as accessory, drag chain suitable, other lengths on request
Sensor cable bending radiusmin. 60 mm
Weightapprox. 130 g without cable, cable (accessory): approx. 60 g/m


Power supply voltage10 ... 30 VDC
Residual ripple< 10 %
Current consumptionmax. 150 mA
Interfacesstandard: SSI or CANopen, on request: CAN BASIC ELGO, RS232, RS422 or addressable RS422, in preparation: BISS-C
Resolution 16.000 measuring steps / revolution
Max. Rotation speed20,000 U/min depending on interface, 0 ... 1000 U/min without protection ring, 1000 ... 20,000 U/min with protection ring
Further optionsadditional incremental A/B, square wave signals or 1 Vss sin/cos
Operating speed10 m/s

Environmental conditions

Storage temperature-25 ... +85 °C
Operating temperature-10 ... +70 °C, -25... +85 °C on request
Humidity95 %, non-condensing
Protection classstandard: IP40, option V: IP65