Hold Analog Frequency Using User-Set Timing - YASKAWA Varispeed E7 Instruction Manual And Parameter Description

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.
The analog value 100 ms after the command is turned ON is used as the frequency reference.
Sample/hold
command
Analog input
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.
•
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Frequency reference
Fig 6.39 Sample/Hold Analog Frequency
Input Terminal Functions
59
6-