Toshiba TOSVERT VF-S15 Instruction Manual page 23

<Example 7: Automatic stop by some conditions>
Automatically stop on the condition of 5Hz or less of output frequency and 120% or
more of output current.
Start by push type (non self-hold type) switch.
See Fig 5-10 for wiring diagram and timing chart.
Output frequency [Hz]
IX1 signal
Output current
Internal operation signal
• Terminal F is used as forward command with push type (non self-hold type) switch.
• Break the forward run command in case that the output frequency is 5Hz or less and
the output current is 120% or less of the rated.
• Forced stop by input signal from Terminal S1 (by breaking forward run command).
Following is the ladder diagram.
The left is general sequencef of self-hold circuit. Unit A consists of 5 steps.
You need to change the unit to two units, and make the composition of 4 setps
according to the My function-S
SW-IX1
SW-IX2
5Hz
120%
Fig. 5-10 Wiring diagram and timing chart for Example 7
- 22 -
Inverter
IX1 (F)
IX2 (S1)
CC
E6581865