LIMAX33 RED Shaft Information and Safety System

LIMAX33 RED Shaft Information and Safety System

For hoisting heights up to 260 m | speeds up to 10 m/s

  • Safe, redundant detection of the absolute car position
  • In combination with a safe elevator control / evaluation unit, safety function are fullfilled up to SIL3
  • Absolute position always directly available – no reference ride even after long power failure
  • RS485 interface, optional CANopen Safety and other secure interfaces on request
  • Easy and flexible installation
  • Resistant to dirt, smoke, and humidity
  • Door zone indication for up to 128 floors
  • Certified magnetic tape assembly kit with tape presence control
  • TÜV certified according to SIL 3 in compliance with EN 61508


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

correct distance is guaranteed by guidance

Sensor housing material


Sensor housing dimensions
L x W x H

355 x 85 x 48 mm

Necessary magnetic tape


Max. measuring length

260 m


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

18 … 29 VDC (stabilized)
in dual-channel operation,
10 … 18 VDC (stabilized)
in single-channel operation

Current consumption

max. 0,6 A


RS485, others on request


up to 0,0625 mm (optional 0,05 mm)

Travel speed

max. 10 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