Toshiba TOSVERT VF-S15 Instruction Manual page 18

 Examples of the setting of the relay sequence function
This section gives an explanation of the relay sequence function using ladder diagrams.
One unit consists of maximum 4 steps. If your sequence consists of 5 steps or more, you need
to change the composition to 4 steps or less.
<Example 5: Operation with a combination of 2 input signals>
Input terminals are used as ON/OFF signal lilke a PLC in this example.
Forward run: Either input terminal is turned on.
Reverse run: Both input terminals are turned on.
Stop
See Fig 5-8 for wiring diagram and timing chart.
Following is the ladder diagram.
The left is general sequence.The sequence of forward run command consists of 5 steps.
You need to change the composition to 4 setps as the right for the My function-S.
IX1
IX2
IX1
: Both input terminas are turned off.
Output frequency
[Hz]
IX1 signal
IX2 signal
Fig. 5-8 Wiring diagram and timing chart for Example 5
F
IX2
IX1
R
IX2
F : Forward run command
R : Reverse run command
Inverter
SW-IX1
IX1 (F)
SW-IX2
IX2 (R)
CC
Reverse
Forward
Step 1
IX1
IX2
IX1
- 17 -
E6581865
Step 2 Step 3 Step 4
IT1
IX2
F
IX1
IT1
R
IX2
IT1: Internal terminal 1