KEB COMBIVERT F5 Instruction Manual

Also see for COMBIVERT F5: INSTALLATION GUIDELINE Installation manual Instruction manual Instruction manual Installation manual

Contents

71Parameter Description - Control SettingsEncoder Sample TimeThis parameter is used to adjust the sample time of the encoderfeedback for calculation of the actual motor speed value. With certainmotors or encoders it may be beneficial to use a time other than thefactory setting. Lower values lead to higher bandwidth and fasterresponse times of the motor. However lower values also increase thesystems susceptibility to electrical noise on the encoder signal. There-fore on some systems having higher noise levels, lower values may notbe suitable. If this electrical noise is a problem, the motor will producean audible noise while running.Unit: -Value range: 0_5, 1, 2, 4 , 8, 16, 32 mSecFactory setting: 4 mSecAdjusted value: based on application requirementsExample: with a 4 mSec sample time the resulting speed measurementresolution using a 1024 encoder is +/-3.5 rpm. A setting of 8 mSec gives+/-1.8 rpm.With Sin/Cos, Hiperface, EnDat encoders see also parameter LF.76 forextended resolution adjustments.Encoder Pulse NumberReverse EncoderUnit: pulse per revolutionValue range: 256...16384 pulse per revolutionFactory setting: 1024 pulse per revolutionAdjustment value: in accordance with the manufacturerspecificationsIf the incremental encoder pulse number is not cor-rectly adjusted, the elevator drive can run very slowly,or over-speed is possible or other unforeseen condi-tions may occur. Therefore, it is absolutely necessaryto adjust this parameter correctly.This parameter can be used to swap the two encoder channels,reverse the direction of the entire system, or both swap encoderchannel and reverse the system direction.Unit: 1Value range: 0...3Factory setting: 0Adjustment value: 0 nothing reversed1 encoder change A <--> B swapped2 motor rotation reversed3 motor rotation reverse and A<-->B swappedsee also section 5.11.2