YASKAWA CIMR-F7A Instruction Manual page 213

Performing Operations Using a 3-wire Sequence
When any constant from H1-01 to H1-6 (multi-function contact input terminals S3 to S8) is set to 0, terminals
S1 and S2 are used for a 3-wire sequence, and the multi-function input terminal that has been set functions as
a Forward/Reverse Run Command terminal.
When the Inverter is initialized for 3-wire sequence control with A1-03, multi-function input 3 (terminal S5)
becomes the input terminal for the Forward/Reverse Run Command.
INFO
-16
6
Stop switch Operation switch
(NC contact) (NO contact)
Fig 6.13 3-wire Sequence Wiring Example
Run Command
Stop Command
Forward/Reverse
OFF (forward)
Command
Motor speed
Stop
Fig 6.14 Three-wire Sequence Time Chart
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.
Run Command (operates when ON)
Stop Command (stopped when ON)
Forward/Reverse Command (multi-function input)
Sequence input common
50 ms min.
Can be either ON or OFF
ON (reverse)
Forward Reverse
OFF
(stopped)
Stop Forward