Electronic overspeed switches

Heavy industry places tough demands on the reliability and service life of the utilized components. Experience shows that mechanical overspeed switches, which are still used in many industrial plants for overspeed protection purposes do not fulfil all requirements with regard to safety, accuracy and reliability. For instance, these devices often exhibit low resistance to shock and vibration, limited switching accuracy as well as requiring speed increasing gear for low switching speeds.

The EGS series of electronic overspeed switches from Johannes Hübner Giessen are the ideal solution for heavy-duty applications that demand the highest levels of precision and reliability. These devices make it possible to monitor both overspeeds and underspeeds across the complete speed range with utmost precision. Furthermore standstill monitoring is possible.

• Monitor speed and standstill
• Solid shaft, hollow shaft, combinations
• Programmable or fixed value
• High switching accuracy
  

• Switching voltage up to 230 V
• Solid shaft and hollow shaft designs
• Simple parameterisation
• Integrated diagnostics
  

• SIL 2 and PL d certified
• Second shaft end
• Two electronic systems (redundant)
• Incremental output