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LIMAX33 RED Shaft Information System 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
  • Absolute position always directly available - no reference ride even after long power failure
  • RS485 interface, others on request
  • Door zone indication for up to 128 floors
  • Certified magnetic tape assembly kit with tape presence control (according to EN61508)
  • SIL3 type-examination tested (EC)
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Measuring principleabsolute, redundant
Repeat accuracy± 1 increment
System accuracy in  µm at 20 °C± (1000 + 100 x L), L= measuring length in meters
Distance sensor/ tapecorrect distance is guaranteed by guidance
Housing materialaluminium
Housing dimensions
(W x B x H)
355 x 85 x 48 mm
Required magnetic tapeAB20-80-10-1-R-D-15-BK80
Basic pole pitch (magnetic tape)8 mm
Max. measuring length260 m
Connections5 pin M12 round connector, others on request
Sensor cablestandard length: 2.0 m, optional: 3.2 or 5.0 m, others on request
Weightapprox. 900 g without cable, cable: approx. 60 g per meter


Power supply voltage2-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 consumptionmax. 600 mA
InterfacesRS485, others on request
Special output featuresdoor zone indication, output: short circuit proof against GND, but not against +24 V
Resolution62.5 µm, others on request
Max. operating speed10 m/s


Achieved SILSIL3 (TÜV-certified)
Fulfilled standardsEN 81-20
Further certificationsEC type-examination


Storage temperature-25 ... +85 °C 
Operating temperature-10 ... +70 °C, -25 ... +85 °C on request
Humiditiy95 %, non-condensing
Protection classIP54 (according to EN60529), higher on request
Interference emission/ immunityEN 12015 / EN 12016
Vibration/ shock resistanceEN 60068-2-6/ EN 60068-2-27/ EN 60068-2-29





Product of ELGO Batscale AG