LIMAX44 RED Shaft Information and Safety System

For hoisting heights up to 1,500 m | speeds up to 18 m/s

  • Safe, redundant detection of the absolute car position
  • In combination with a safe elevator control / processing unit safety function are fulfilled (see LIMAX44 SAFE)
  • Unguided, completely noiseless technology
  • Robust measuring principle, insensitive to dirt, smoke, and humidity
  • Simplified assembly for high-rise buildings, no assembly clips required
  • RS485 interface, others on request
  • SIL3 type-examination tested (EU) (customer specific options)


Mechanical Data

Measuring principle


System accuracy in µm at
20 °C

+/- (1000 µm + 100 µm x L)
L = measuring length in meters

Distance between sensor
and magnetic tape

9 mm, 12 mm
(depends on type of magnetic tape)

Sensor housing material


Sensor housing dimensions
L x W x H

475 x 78 x 35 mm

Necessary magnetic tape


Max. measuring length

768 m / 1500 m
(depending on type of magnetic tape)


M12 circular plug 5 pole, others on request

Sensor cable

2 m, 3,2 m, 5 m standard-cable length, others on request, drag chain compliant


approx. 900 g without cable,
cable: approx. 60 g per meter

Electrical Data

Power supply

10 … 30 VDC

Current consumption

max. 0,6 A


RS485, others on request


1 mm, others on request

Travel speed

max. 18 m/s

Environmental Condition

Storage temperature

-25 … +85 °C

Operation temperature

-10 … +70 °C
-25 … +85 °C on request


max. 95%, non-condensing

Protection class

IP54, higher on request