Hold Analog Frequency Using User-Set Timing; Switching Operations Between A Communications Option Card And Control Circuit Terminals - YASKAWA G7 Series Technical Manual

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.
The analog value 100ms after the command is turned ON is used as the frequency reference.
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.
•
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.
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Sample/hold
command
Analog input
Frequency reference
Fig 6.52 Sample/Hold Analog Frequency