3
Performing
Operations
Using
a
3-wire
Sequence
By
selecting
0
for
any
parameter
from
H1-01
to
H1-05
(related
to
terminals
S3
to
S7),
the
selected
terminal
functions
as
a
forward/reverse
run
command,
and
terminals
S1
and
S3
change
functions
to
3-wire
sequence
commands.
When
the
Inverter
is
initialized
for
3-wire
sequence
control
(A1-03=3330),
multi-function
input
3
(terminal
S5)
will
be
the
forward/reverse
direction.
Fig 6.13 3-wire Sequence Wiring Example
Fig 6.14 Three-wire Sequence Time Chart
INFO
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.
Stop switch
(NC contact)
Operation switch
(NO contact)
Run command
(operates when ON)
Stop command
(stopped when OFF)
Forward/reverse direction
(multi-function input)
Sequence input common
50 ms min.
Run command
Forward/reverse
direction
Motor speed
Can be either ON or OFF
OFF
(stopped)
OFF (forward)
ON (reverse)
Stop Forward Reverse Stop Forward
Stop command
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