Shaft Information System LIMAX3R SIL3 certified absolute measurement for hoisting heights up to 260 m

  • For hoisting heights up to 260 m | speeds up to 10 m/s
  • Safe detection of the absolute car position
  • Redundant, self-monitoring dual channel measuring system
  • In combination with a safe elevator control / evaluation unit safety function are fullfilled up to SIL3
  • RS485 interface, CAN and other safe interfaces on request
  • Door zone indication for up to 128 floors
  • Certified magnetic tape assembly kit with tape presence control (according to EN61508)
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Measuring principle absolute, redundant
Repeat accuracy ± 1 increment
System accuracy in  µm at 20 °C ± (1000 + 100 x L), L= measuring length in meters
Distance sensor/ tape correct distance is guaranteed by guidance
Housing material aluminium
Housing dimensions
(W x B x H)
355 x 85 x 48 mm
Required magnetic tape AB20-80-10-1-R-D-15-BK80
Basic pole pitch (magnetic tape) 8 mm
Max. measuring length 260 m
Connections 5 pin M12 round connector, others on request
Sensor cable standard length: 2.0 m, optional: 3.2 or 5.0 m, others on request
Weight approx. 900 g without cable, cable: approx. 60 g per meter


Power supply voltage 2-channel operation: +18... 29 VDC (stabilized), 1-channel operation: +10... 18 VDC (stabilized)
Note: do only use SELV or PELV power supply!
Residual ripple < 100 mV
Current consumption max. 600 mA
Interfaces RS485, others on request
Special output features door zone indication, output: short circuit proof against GND, but not against +24 V
Resolution 62.5 µm, others on request
Max. operating speed 10 m/s
Cycle period 4 ms


Achieved SIL SIL3 (TÜV-certified)
Conformity / Standards / Certificates EN 81-20/50, IEC61508, TSG T7007, A17.5, CSA B44.1-11



Storage temperature -25 ... +85 °C 
Operating temperature -20 ... +75 °C
Humiditiy 95 %, non-condensing
Operting Height max. 2000 m above sea level
Protection class IP54 (according to EN60529), higher on request
Interference emission/ immunity EN 12015 / EN 12016
Vibration/ shock resistance EN 60068-2-6/ EN 60068-2-27/ EN 60068-2-29



Product of ELGO Batscale AG