Setting Function Page
7A KEB Ride-Thru 2 (N.C.)
217
7B KEB Ride-Thru 2 (N.O.)
7C Short Circuit Braking (N.O.)
217
7D Short Circuit Braking (N.C.)
Setting Function Page
7E
Forward/Reverse Detection (V/f control with
simple PG)
217
90 to 97 DriveWorksEZ Digital Input 1 to 8 218
9F DriveWorksEZ Disabled 218
Setting 0: 3-Wire Sequence
The digital input programmed for 3-Wire control becomes the forward/reverse directional input, S1 becomes the Run command
input, and S2 becomes the Stop command input.
The drive starts the motor when the input S1 set for the Run command closes for longer than 2 ms. The drive stops the operation
when the Stop input S2 releases for 2 ms. When the digital input programmed for a forward/reverse operation is open, the
drive is set for forward operation. When the digital input is closed, the drive is set for reverse operation.
Note: Input the Run and Stop commands via S1 and S2 when selecting a 3-Wire sequence.
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
Figure 5.55 3-Wire Sequence Wiring Diagram
2 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)
Figure 5.56 3-Wire Sequence
Note: 1. The Run command must be closed for more than 2 ms.
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 automatically issue the Run command upon drive power
up.
WARNING! Sudden Movement Hazard. Ensure start/stop and safety circuits are wired properly and in the correct state before applying
power to the drive. Failure to comply could result in death or serious injury from moving equipment.
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). Make sure b1-17 is set to “0” (drive does not accept a 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 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. If a digital input set to H1-oo = 2
is active, they will be read from external reference source 2 (b1-15 and b1-16). In all other cases they will be read from external reference
source 1 (b1-01 and b1-02).
Note: 1. The LO/RE key on the digital operator is disabled when one of the multi-function input terminals is set to for LOCAL/REMOTE.
2. When the drive is set to LOCAL, the LO/RE LED will light.
5.7 H: Terminal Functions
208
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
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