YASKAWA G7 Series, Техническое руководство

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Hold Analog Frequency Using User-set Timing
When one of H1-01 to H1-10 (multi-function contact input terminal S3 to S12 function selection) is set to 1E
(sample/hold analog frequency command), the analog frequency reference will be held from 100ms after the
terminal is turned ON, and operation will continue thereafter at that frequency.
Fig 6.52 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. If these commands are used at the same time, operation error OPE03 (invalid multi-function input selec-
tion) will occur.
•
Acceleration/Deceleration Ramp Hold command
•
UP/DOWN command
•
Trim Control Increase/Decrease command
Application Precautions
•
When performing sample/hold of analog frequency references, be sure to store references of 100ms mini-
mum. If the reference time is less than 100ms, the frequency reference will not be held.
•
The analog frequency reference that is held will be deleted when the power supply is turned OFF.
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Switching Operations between a Communications Option Card and Con-
trol Circuit Terminals
You can switch reference input between the Communications Option Card and the control circuit terminals.
Set one of the parameters H1-01 to H1-10 (multi-function contact input terminal S3 to S12 function selection)
to 2 (Option/Drive selection) to enable switching reference input using the terminal ON/OFF status when the
Drive is stopped.
Sample/hold
command
Analog input
Frequency reference
The analog value 100ms after the command is turned ON is used as the frequency reference.
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