FAQ - Frequently Asked Questions

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  • No : 7596
  • Date of Issue : 2021/12/07 10:15
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(EHF) The amplitude characteristic deteriorates

(EHF) The amplitude characteristic deteriorates.(Test can no longer be done under the conditions previously available)
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.
 
 
Cause1: The gas in the accumulator is insufficient.
Countermeasure1: The accumulator gas needs to be charged. Contact a Shimadzu sales or service representative.
  Click here for "(EHF) Charging the accumulator with nitrogen gas".
 
Cause2: Servo valve failed.
Countermeasure2: Overhaul the servo valve. Contact a Shimadzu sales or service representative.
 
Cause3: The test jig is too heavy.
Countermeasure3: It is not abnormal. In the high frequency range, the effect of inertial force becomes large, so the amplitude characteristics will decrease if the jig weight is large. Please use within the range that test can be done.

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