AksIM™

Off-Axis Rotary Absolute Magnetic Encoder

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 & Benefits

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

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

Software notice:

USB drivers For Windows 10 or newer use Windows Update to install “inbox drivers”. More information is on this link. For Windows 8 or older, drivers must be installed manually.

For manual USB drivers setup please download the setup file.

Product data

System

Reading type: Axial
Max. resolution: 20 bit
Encoder accuracy: ±0.05° (before installation - errors caused by mounting inaccuracy of the readhead, ring and drive shaft are not included)
Maximum speed: 10,000 RPM
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)
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