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  • No : 7591
  • Date of Issue : 2021/12/07 10:15
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(EHF) The crosshead descends

(EHF) The crosshead descends even when the drop prevention stopper of crosshead stopper is set
EHF-E, U, L Series
Servo Controller 4830
Category : 

Answer

WARNING: Be sure to power off the entire system before performing any operation.
  Do not work while the power is on. Failure to do so may result in electric shock or injury.
 
 
Cause: Insufficient tightening force
Countermeasure: If the tightening force is weak, tighten the screws more tightly.
The maximum tightening force is 
EHF-E Series:
  E50kN/E100kN: About 7kgf
  E200kN: about 13 kgf
EHF-U Series: About 13 kgf
EHF-L Series: About 7 kgf
 

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