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Absolute rotary encoder with solid shaft and industrial Ethernet
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The absolute optical multiturn rotary encoder WH5850 is particularly high-resolution and designed for time-critical applications. Thanks to the large selection of Industrial Ethernet interfaces, such as PROFINET (also with PROFIdrive profile), EtherNet/IP and EtherCAT, as well as short reaction times and 100% magnetic insensitivity, it is ideally suited for use in drive technology, warehouse technologies and factory automation. Thanks to the support of the latest PROFINET, EtherNet/IP and EtherCAT functions, it offers easy integration and optimum system availability!

  • absolute optical encoder
  • high-precision and up to 19 bit single-turn resolution
  • PROFINET IO, EtherNet/IP, EtherCAT interfaces
  • robust bearing construction as well as high shock and vibration resistance
  • 100% magnetic insensitivity
  • fast commissioning and high system availability
  • Industry 4.0 ready

Mechanical data

Feature Technical data Additional information
Shaft rustproof stainless steel  
Flange Aluminum  
Housing Aluminum  
Speed ≤9000 rpm transient for ≤10 min., with EPN PROFINET IO
  ≤6000 rpm continuous operation, with EPN PROFINET IO
  ≤8000 rpm transient for ≤10 min., with EIP EtherNet/IP, up to 70° C
  ≤6000 rpm continuous operation, with EIP EtherNet/IP, up to 70° C
Moment of inertia ≤3 x 10-6 kgm2  
Starting torque <0.01 Nm at 20 °C  
Shaft load rating 80 N radial
  40 N axial
Mounting type supported flange joint ø58 mm mounting type M1
  servo flange ø58 mm mounting type M2
  square flange 63.5 mm mounting type M5
Weight ~0.45 kg  

Electrical data

  • PROFINET IO interface
Feature Technical data Additional information
Operating voltage 10 … 30 V DC reverse-polarity protected 
Current consumption ≤250 mA  
Power input ≤2500 mW without load
Parameter storage 1010 cycles also applies to calibration operations
Status display 5 LEDs device status/bus status
Interface PROFINET IO Profile Version 4.1, PROFIdrive Version 4.2, RT Class 3 (IRT), Conformance Class C, Application Class 6, Encoder Class 4, Netload Class II
Type of connection 1x M12 connector (A-coded) 4-pole, 1x pin
  2x M12 connector (D-coded) 4-pole, 2x sockets

EtherNet/IP interface

Feature Technical data Additional information
Operating voltage 10 … 30 V DC reverse-polarity protected 
Current consumption ≤250 mA  
Power input ≤2500 mW without load
Parameter storage 104 Zyklen also applies to calibration operations
Status display 5 LEDs device status/bus status
Interface EtherNet/IP Vol. 2, Ed 1.17, CIP Specification Vol. 1, Ed 3.16
Type of connection 1x M12 connector (A-coded) 4-pole, 1x pin
  2x M12 connector (D-coded) 4-pole, 2x sockets

System data

Feature Technical data Additional information
Scanning optical  
Resolution 19 bit at EPN PROFINET IO scalable, default: 8192 (13 Bit)
  16 bit at EIP EtherNet/IP scalable, default: 8192 (13 Bit)
System accuracy ±0.0194° at 23 °C ±2 °C  
  ±0.0139° at 23 °C ±2 °C typisch 
Repeat accuracy  1 LSB  
Measuring range 16777216 revolution(s) 24 bit, with EPN PROFINET IO, default: 4096 (12 bit), scalable only via overall resolution
  65536 revolution(s) 16 bit, with EIP EtherNet/IP, default: 4096 (12 bit), scalable only via overall resolution

Ambient conditions

Feature Technical data Additional information
Ambient temperature -40 … 80 °C  
Storage temperature -40 … 80 °C  
Relative humidity 95 % condensation inadmissible
EMC DIN EN 61326-1 immunity requirement of the industry
  DIN EN 61000-4-2, -3, -6, -8 interference resistance / immission
  DIN EN 61000-4-4 burst
  DIN EN 55011 Class A radiation emission / radio interference suppression
Protection category IP65 EN 60529
  IP67 EN 60529
Shock resistance 2500 m/s2, 6 ms EN 60068-2-27 
Vibration resistance 100 m/s2, 55 … 2000 Hz EN 60068-2-6 

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Datasheet