Overview

The AksIM™ is a non-contact high performance off-axis absolute rotary encoder designed for applications with limited installation space. The compact, low profile readhead detects and evaluates the magnetic field of a thin, axially magnetized ring.

Features

  • Resolution to 20 bits
  • BiSS, SSI, PWM, USB, SPI and serial RS422
  • Overall system thickness only 7 mm
  • Integrated status LED

Benefits

  • True absolute, single track
  • Non contact, no hysteresis
  • High speed
  • Low profile
  • High degree of IP protection
  • Custom ASIC based magnetic sensor
  • Built-in self-monitoring
  • Corrosion resistant magnetic ring
Configure and Buy Configure Data sheet

Product data

System

Reading type
Axial
Max. resolution
20 bit
Maximum speed
> 10,000 rpm
Encoder accuracy
±0.05° (before installation - errors caused by mounting inaccuracy of the readhead, ring and drive shaft are not included)
Repeatability
Better than unit of resolution
Hysteresis
Less than unit of resolution

Electrical

Supply voltage
4 V to 6 V – voltage on readhead. Consider voltage drop over cable.
Set-up time
10 ms (first data ready after switch-on)
Current consumption
Typ. 115 mA, max. 150 mA
Output load
PWM, SPI: Max. ±20 mA, RS422: 120 mA short term, 60 mA limited

Mechanical

Cable
Ø4.2 ±0.2 mm, PUR highly flexible cable, drag-chain compatible, double-shielded
Inertia
Ring MRA7: 13.1 kg×mm2, Ring MRA8: 79.1 kg×mm2
Available ring sizes (outer diameter)
49 mm, 80 mm

Environmental

External magnetic field
Max ±3 mT (DC or AC) on top side of readhead
Humidity
0 to 100% (condensation permitted)
IP protection
IP64
Shocks (11 ms)
300 m/s2 (IEC 60068-2-27)
Temperature
Operating: –30 °C to +85 °C with static cable, –10 °C to +80 °C with cable under dynamic conditions, Storage: –40 °C to +85 °C
More info in Data sheet

Industries

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Technical article: AksIM™ encoder
$13.02