YASKAWA F7 Programming Manual page 79

Parameter
Setting
35 PID Input (Error) Polarity Change
60 DC Injection Braking
61 Speed Search 1
62 Speed Search 2
63 Field Weakening Command (Energy Savings)
64 Speed Search 3
65 Kinetic Energy Braking Ridethru N.C.
66 Kinetic Energy Braking Ridethru N.O
67 Communication Test Mode
68 High Slip Braking
69 Jog 2
6A Drive Enable
71 Speed/Torque Control Selection
72 Zero Servo Command
77 ASR Gain Switch
78 Polarity Reversing Command for External Torque Control
Function: 3-Wire Control
Setting: 0
When one of the digital inputs is programmed for 3-Wire control, that input becomes a Forward/Reverse directional input. Whenever the
input is open, the Drive will be set for forward rotation of the motor shaft. If the input it closed, then the motor shaft will rotate in the
reverse direction whenever a there is a Run input. The S1 and S2 digital inputs will function as a Run and Stop input respectively.
Run command
Stop command
Forward/reverse
command
Table 13 Multi-Function Input Selection (Continued)
Function
Stop Operation
switch switch
(NC contact) (NO contact)
Fig. 43 Terminal Configuration for 3-Wire Control
OFF (forward)
Motor speed
Stop
Fig. 44 3-Wire Control Timing Diagram
Run command
(run on momentary close)
Stop command
S3 or S5
(stop on momentary open)
Forward/reverse command
(multi-function input)
Sequence input common
50 ms min.
Can be either ON or OFF
ON (reverse)
Forward Reverse
Programming 71
Control Method (A1-02)
V/f with
V/f
PG
O O
O O
O X
O X
O O
O O
O O
O O
O O
O O
O O
O O
X X
X X
X X
X X
OFF
(stopped)
TIME
Stop Forward
Open
Flux
Loop
Vector
Vector
O O
O O
O X
O X
X X
O O
O O
O O
O O
X X
O O
O O
X O
X O
X O
X O