Toshiba TOSVERT VF-S15 Instruction Manual page 42

 Input function command 18: HOLD (peak hold)
The HOLD command makes the inverter hold the peak value of analog input signal and monitor
date, as illustrated in the timing chart below.
Hold reset signal
Specify a hold reset signal using the input function parameter
which pairs off with the peak hold command parameter.
Peak holding
Input
＜Example＞ Hold the peak output current. When the output current ecceeds 120% of the rated current,
output the signal from Terminal RY-RC. Reset the hold by the signal from Terminal S1.
Prior setting –
Step 1
Step 2
Unit 1
Step 3
Step 4
– –
Output
Fig. 8-4 Processing by peak hold
Title Parameter setting
a977  (Default)
f114 
f130 
a918 
a900 
a901 
a902 
a903 
a904 
a905 
a977 
Input
Reset
Start of peak holding
Output
Set to "Disabled" of the My function-S.
Assign the "no function" to the Terminal S1.
Assign the My function-S output 1 to the Terminal
RY-RC.
Assign a reference value of 120% to the output
percent data 1.
Read the output current. (LD Output current)
Start holding the peak output current.
Assign the reset signal output function to the
Terminal S1.
Output a signal if the peak value reaches 120% of
the rated current.
Transfer the result to the My function-S output 1.
Set to "My function-S always ON".
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Reset
Start of peak holding
Description