Input Terminal Functions
6
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47
Time Chart
The time chart when using baseblock commands is shown below.
Fig 6.35 Baseblock Commands
Hold Analog Frequency Using User-set Timing
When one of 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 and operation will continue thereafter at that frequency.
Fig 6.36 Sample/Hold Analog Frequency
Application Precautions
When setting and executing sample and hold for analog frequency references, observe the following precau-
tions.
•
When performing sample/hold of analog frequency reference, be sure to store reference for 100 ms mini-
mum. If the sample/hold time is less than 100 ms, the frequency reference will not be held.
•
The analog frequency reference that is held will be deleted when the power supply is turned OFF.
IMPORTANT
If using baseblock commands with a variable load, do not frequently input baseblock commands during
operation, as this may cause the motor to suddenly start coasting and and may result in the motor falling or
slipping.
• Always use base block command when a contactor between inverter and motor is installed.
Forward operation/Stop
Baseblock command
Input
Cleared
Frequency reference
Output frequency
Search from stored frequency reference
Coast to a stop
Sample/hold
command
Analog input
Frequency reference
The analog value 100 ms after the command is turned ON is used as the frequency reference.
