5.7 H: Terminal Functions
160
YASKAWA ELECTRIC
SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
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 for a brief moment. Whenever 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 5.36
Figure 5.36 3-Wire Sequence Wiring Diagram
Figure 5.37
Figure 5.37 3-Wire Sequence
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-
= 0) and then
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.
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 111
if this feature is required by the application.
Status
Description
Closed
LOCAL: Frequency reference and Run command are input from the digital operator.
Open
REMOTE: Frequency reference and Run command are input from the selected external reference. (b1–01 and b1–02) If no input
is set to H1-
= 2 the settings in parameters b1-01 and b1-02 are valid. If a digital input set to H1-
= 2, the source selected
by this input will be valid.
S1
S2
S5
SC
Run Command (Runs when Closed)
DRIVE
Stop Switch
(N.C.)
Run Switch
(N.O.)
Stop Command (Stops when Open)
FWD/REV (Multi-Function Input)
(H1-05 = 0)
Sequence Input Common
50 ms min.
Run command
OFF (stopped)
Can be either ON or OFF
OFF (forward)
Motor speed
Forward/reverse
command
Stop command
Stop
Reverse
Stop
Foward
TIME
Forward
ON (reverse)
