YASKAWA V1000 Technical Manual page 177

Setting 0: 3-Wire Sequence
When one of the digital inputs is programmed for 3-Wire control, that input becomes a forward/reverse directional input,
S1 becomes the Run command input, and S2 becomes the Stop command input.
The drive will start the motor when the Run input S1 is closed for longer than 50 ms. The drive will stop the operation
when the Stop input S2 is released. When the input programmed for 3-Wire sequence is open, the drive will be set for
forward direction. If the input is closed, the drive is set for reverse direction.
Note: When 3-Wire sequence is selected the Run and Stop command must be input at S1 and S2.
Figure 5.61
Run command
Stop command
Forward/reverse
command
Motor speed
Note: 1. The Run and Stop command must be open/closed for a short moment only to start and stop the drive.
2. If the Run command is active at power up and b1-17 = 0 (Run command at power up not accepted), the Run LED will flash to
indicate that protective functions are operating. If required by the application, set b1-17 to "1" to have the Run command issued
automatically as soon as the drive is powered up.
WARNING! Sudden Movement Hazard. The drive may start unexpectedly in reverse direction after power up if it is wired for 3-Wire
sequence but set up for 2-Wire sequence (default). When using 3-Wire sequence first set the drive properly (H1-
connect the control wires. Make sure b1-17 is set to "0" (drive does not accept Run command active at power up). When initializing the
drive use 3-Wire initialization. Failure to comply could result in death or serious injury from moving equipment.
Setting 1: LOCAL/REMOTE Selection
This setting allows the input terminal to determine if the drive will run in LOCAL mode or REMOTE mode.
Status
Closed LOCAL: Frequency reference and Run command are input from the digital operator.
REMOTE: Frequency reference and Run command are input from the selected external reference in accordance with the b1-01
Open
and b1-02 or b1-15 and b1-16 settings.
Note: 1. If one of the multi-function input terminals is set to for LOCAL/REMOTE, then the LO/RE key on the operator will be disabled.
2. When the drive is set to LOCAL, the LO/RE LED will light.
3. The default setting of the drive is not to allow switching between LOCAL and REMOTE during run. to
REMOTE Run Selection on page 122
Setting 2: External Reference 1/2 Selection
The external reference 1/external reference 2 selection function allows the user to switch between the frequency reference
and Run command source between external reference 1 and 2.
Status
Open External reference 1 is used (defined by parameters b1-01 and b1-02)
Closed External reference 2 is used (defined by parameters b1-15 and b1-16)
Note: The default setting of the drive is not to allow switching between external reference 1 and 2 during run.
REMOTE Run Selection on page 122
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Stop Switch Run Switch
(N.C.) (N.O.)
Figure 5.45 3-Wire Sequence Wiring Diagram
2 ms min.
Can be either ON or OFF
OFF (forward)
S o t p Forward
Figure 5.46 3-Wire Sequence
if this feature is required by the application.
if this feature is required by the application.
DRIVE
S1
Run Command (Runs when Closed)
S2
Stop Command (Stops when Open)
S5
FWD/REV (Multi-Function Input)
(H1-05 = 0)
SC
Sequence Input Common
2 ms min.
ON (reverse)
R e v e s r e S o t p F o
Description
Description
5.7 H: Terminal Functions
Can be
ON or OFF
w a d r
oo = 0) and then
Refer to b1-07: LOCAL/
Refer to b1-07: LOCAL/
5
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