Input Terminal Functions
6-59
Hold Analog Frequency Using User-set Timing
When one of the constants H1-01 to H1-05 (multi-function contact input terminal S3 to S7 function selection)
is set to 1E (sample/hold analog frequency command), the analog frequency reference will be held from 100
ms after the terminal is turned ON, and operation will continue at that frequency.
Fig 6.39 Sample/Hold Analog Frequency
Precautions
When setting and executing sample and hold for analog frequency references, observe the following precau-
tions.
Setting Precautions
When using sample/hold of analog frequency reference, you cannot use the following commands at the same
time. Otherwise operation error OPE03 (invalid multi-function input selection) will occur.
• Acceleration/Deceleration Ramp Hold command
• UP/DOWN command
• Trim Control Increase/Decrease command
Application Precautions
• When performing sample/hold of analog frequency reference, be sure to close the digital input for 100 ms
or more. If the sample/hold time is less than 100 ms, the frequency reference will not be held.
• The frequency reference value that is held will be deleted when the power supply is turned OFF.
Sample/hold
command
Analog input
Frequency reference
The analog value 100 ms after the command is turned ON is used as the frequency reference.
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