YASKAWA CIMR-G7U Technical Manual page 226

Performing Operations Using a 3-wire Sequence
When any parameter from H1-01 to H1-10 (multi-function contact input terminals S3 to S12) is set to 0, ter-
minals 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 Drive is initialized for 3-wire sequence control with A1-03, multi-function input 3 becomes the
input terminal for the forward/reverse run command.
INFO
-8
6
Stop switch Operation switch
(NC contact) (NO contact)
Fig 6.9 3-wire Sequence Wiring Example
Run command
Stop command
Forward/reverse
OFF (forward)
command
Motor speed
Stop
Fig 6.10 Three-wire Sequence Time Chart
Use a sequence that turns ON terminal S1 for 50ms or longer for the run command. This will make the run
command self-holding in the Drive.
Run command
(operates when ON)
Stop command
(stopped when ON)
Forward/reverse command
(multi-function input)
Sequence input common
50ms min.
Can be either ON or OFF
OFF
(stopped)
ON (reverse)
Forward Reverse Stop Forward