Run Command
6-
11
Performing Operations Using a 3-wire Sequence
When any constant from H1-01 to H1-10 (multi-function contact input terminals S3 to S12) is set to 0, termi-
nals S1 and S2 are used for a 3-wire sequence, and the multi-function input terminal that has been set func-
tions as a Forward/Reverse Run Command terminal.
When the Inverter is initialized for 3-wire sequence control with A1-03, multi-function input 3 becomes the
input terminal for the Forward/Reverse Run Command.
Fig 6.11 3-wire Sequence Wiring Example
Fig 6.12 Three-wire Sequence Time Chart
INFO
1. Use a sequence that turns ON terminal S1 for 50 ms or longer for the Run Command. This will make the
Run Command self-holding in the Inverter.
2. When the 3-wire sequence is set, do not make the wiring for the control circuit unless the multi-function
input terminal constant is set. Failure to observe this warning may result in injury.
Stop switch
(NC contact)
Operation switch
(NO contact)
Run Command
(operates when ON)
Stop Command
(stopped when ON)
Forward/Reverse Command
(multi-function input)
Sequence input common
50 ms min.
Run Command
Forward/Reverse
Command
Motor speed
Can be either ON or OFF
OFF
(stopped)
OFF (forward)
ON (reverse)
Stop
Forward
Reverse
Stop
Forward
Stop Command
