ESG - Electromechanical

 
 
Safety Gear

Description



Wittur ESG is a breakthrough safety system solution for new elevator installations.

Its reliable braking element is combined with the latest SIL3 position and speed detection and electromechanical gear activation: overspeed governor, tension device and rope loop are no longer needed, and more shaft space can be used for the car.

Advanced self-monitoring routines and automatic setup with shaft dimensions determination ensure a fast and easy installation and a reliable fail-safe system. Safety electronics also combine additional functions: UCM detection, absolute shaft encoder, door zone switch, shaft end switches. A backup battery is supplied in the electronic interface box to ensure operation also in case of power loss.

USP's

  • Fast and easy installation
  • Shaft efficiency: more space for car
  • Component cost savings due to less components in the shaft: no Overspeed Governor, no Tension Weight, no Governor Rope Loop
  • Maintenance cost savings due to absence of Overspeed Governor, Rope and Tension Weight
  • Safety electronic car combine additional functions, such as UCM detection absolure shaft positioning, Door zone switch and Shaft end switches
  • Compliant with EN 81-20/50
  • ESG stopping and holding element compliant with EN 81-21 for reduced pit and headroom applications, substituting the hinged buffer in the shaft

Speed/Load Graphic




 
SG Type Load 
on Safety [kg]
max. Rated 
Speed 
[m/s]
Guide Rail [mm]
ESG-17BS 530 - 1.680 2,00 9 - 16 machined oiled/dry
ESG-25U 500 - 2.500 2,00 9 - 16 machined oiled/dry


For 3D drawings in STEP Format, please refer to the Download Section below.
 

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