LIMAX33 SAFE Shaft Information and Safety System

Magnetic tape-based shaft information and control system

  • Combination of Sensor and Safe Box
  • Redundant double sensor with integrated monitoring
  • Absolute position is always and directly available – no referencing even after long power cuts
  • Available interfaces: CAN, CANopen (DS406, DS417 on request)
  • Easy and flexible installation
  • Noiseless measuring principle
  • Insensitive to dirt, smoke, and humidity


Mechanical Data

Measuring principle


Repeat accuracy

+/- 1 mm

System accuracy in µm at 20 °C

+/- (1000 µm + 20 µm x L)
L = measuring length in meters

Distance between sensor
and magnetic tape

4 mm

Basic pole pitch

8 mm

Sensor housing material

Sensor: Aluminium
Safe Box: Aluminium

Sensor housing dimensions

Sensor: L x W x H = 355 x 85 x 48 mm
Safe Box: L x W x H = 170 x 125 x 73 mm

Necessary magnetic tape


Max. measuring length

125 m / 262 m (depends on safety circuit voltage)

Cable connection

open cable ends


Sensor: ca. 900 g without cable
Safe Box: ca. 1440 g without cable
Cable: ca. 60 g per meter

Ambient Temperature

Storage temperature

-25 … +85 °C

Operation temperature

-10 … +70 °C
-25 … +85 °C on request

Protection class


Electrical Data

Power supply

24 VDC  +20% / -25%

Current consumption

max. 400 mA at 24 V


CAN, CANopen (DS406, DS417) others on request


1 mm (others on request)


max. 10 m/s

Sensor cable

2 m Standard cable length,
others on request,
drag chain compliant