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Inductive rotor position encoder – GEL SEK20

VarioCODER Protect

  • Robust, incremental hollow shaft encoder for installation in electrical drives
  • For detection of pole position, angle and rotational speed
  • Maximum robustness: Fully coated construction, designed for extreme operating conditions
  • Maximum efficiency and control quality through high-precision control of the pole position
  • Reduction of development and product costs
Inquiry & Support

Technical information

Properties

  • Rotational speed: ≤ 100,000 min-1 (r.p.m.)
  • Accuracy: typ. < 0.5° electrical
  • Latency: < 5 μs
  • Operating temperature range: -40 °C to +125 °C
  • Degree of protection: IP68
  • Integrated signal processing
  • Line driver for cable lengths up to 30 m
  • Prepared for ASIL C and ASIL D (internal self-diagnosis)
  • Rotor material: Conductive material ≥ 35 μm (PCB, aluminum, steel)

Advantages

  • Can be integrated into all motor designs with high mounting tolerances
  • Immediate angle output after switching on without any reference search routine
  • High accuracy without calibration
  • High reliability with regard to mechanical loads
  • Initial sample or prototypes available short-term
  • Price/performance better than a mass-produced resolver
  • Magnet-free and not sensitive to magnetic fields
  • Small dimensions, low moment of inertia
  • Large axial and radial mounting tolerances
  • Maintenance and wear-free thanks to the bearing-free design

Fields of application

Industry and automation

Servo drives and motor feedback:

  • Rotor angle determination for Field-Oriented Control (FOC) (BLDC, PMSM, synchronous motors)
  • Pole position detection for initial commutation

Robotics and handling:

  • Joint angle feedback in robots and cobots
  • Position feedback in AMRs and AGVs

Automotive and commercial vehicles

Electrical drives:

  • Rotor angle determination in E-motors
  • Sin/cos feedback for inverter circuits

Driving dynamics and vehicle control:

  • Angle and position detection in auxiliary units
  • Motor-side sensors for hybrid modules

E-bikes, e-scooters, light electric vehicles:

  • Rotor position sensors in wheel hub motors

Commercial vehicles and agricultural machinery:

  • Position feedback in hydraulic pumps and auxiliary drives
  • Monitoring of conveyor units, worm gears, and drums

Railroad technology and transportation

Rail vehicles:

  • Rotor position sensors in highly dynamic traction motors

Conveyor belt and cable car technology:

  • Drive control on deflection pulleys
  • Synchronous control of multi-engine cable car systems

Maritime applications

Ship propulsion systems:

  • Rotor position feedback for electrical and hybrid ship propulsion systems

Auxiliary units:

  • Input/output speed for pumps, compressors
  • Slip control in mechanical couplings

Aviation and aerospace

Aircraft actuators and UAV drives:

  • Rotor position sensors in BLDC/PMSM drives for flaps, undercarriages

Satellites and space robotics:

  • Angle measurement in reaction wheels and solar array drives

Logistics and conveyor technology

Conveyor belts:

  • Speed and control feedback in distribution centers
  • Synchronization of transport paths

Automatic storage systems:

  • Angle and position feedback for rack feeders

Crane and lifting systems:

  • Position sensors for lifting gears and undercarriages
  • Control of driving and rotary motions

The appropriate service device

GEL 211CV0 Service and diagnostic unit for VarioCODER with sin/cos output

Dimensional drawings

All dimensions in mm [inch]

Technical data

Electrical data

Supply voltage UB (short-circuit-proof)

5 V DC

Current consumption IB (without load)

< 30 mA

Output signals sin/cos (short-circuit-proof)

Single ended: Two sinusoidal signals phase-shifted by 90°
Differential: Two sinusoidal signals phase-shifted by 90° and their inverse signals

Output signal level (Single Ended)

2 VPP

Accuracy per period

typ.< 0.5° electrical

Latency

< 5 μs

Number of periods per mechanical revolution

1 to 64

Frequency range

0 to 10 kHz

Recommended output current

< 5 mA

Mechanical data encoder kit

Weight

t.b.d. (depending on the configured prototype)

Air gap (nominal)

1.2 mm

Mechanical data stator

Material

t.b.d. (depending on the configured prototype)

Outside diameter DOS

t.b.d. (depending on the configured prototype)

Mounting types

Screw mounting, bonding, clamping

Axial overall height

t.b.d. (depending on the configured prototype)

Mechanical data rotor

Material

Conductive material ≥ 35 μm (PCB, aluminum, steel)

Rotational speed

≤ 100,000 min-1

Shaft diameter DIR

t.b.d. (depending on the configured prototype)

Environmental tests

Operating temperature range

-40 °C to +125 °C

Storage temperature range

-40 °C to +125 °C

Degree of protection

IP X8

Dielectric strength

ISO 16750-1 to ISO 16750-5

Electromagnetic compatibility

DIN EN 61000-4-4; DIN EN 61000-4-2; ISO 10605 ECE-R10

UN ECE R10 Rev.6:2019-10

 ISO 11452-2:2004-11 (ALSE); ISO 11452-4:2011-12 (BCI); DIN EN 55025:2003-11

MTTF value

 ≥ 3,000,000 h at 55 °C