Yaskawa F7 Drive Programming Manual - Manual (Page 12)

Programming 4
If A1-01 is configured for Advanced Access (A1-01= “2: Advanced Level”), then all menus and all parameters are shown. If
the Access Level Selection is set to Advanced, all parameters should be adjustable unless:
1. The Drive parameters are password protected (A1-04) which will prevent access to A1-00 through A1-03 and all A2 parameters.
2. A digital input has been configured as a Program Lockout (H1-0X= 1B) is active.
3. During serial communication writing, if a parameter change is also attempted via the digital operator, a
“BUSY - WRITE PROTECTED” message will display. Parameter change will not be possible from the digital operator until
an Enter command is received via the serial communication to finish the serial writing process.
A1-02 Control Method Selection
The Control Method of the Drive can be selected in A1-02 to best suit the application.
V/f Control without PG - For general purpose and multiple motor applications.
V/f Control with PG - For general purpose applications requiring closed loop speed control.
Open Loop Vector - For applications requiring precise speed control, quick response, and higher torque at low speeds.
Flux Vector - For applications requiring very precise speed and torque control at wide speed range including zero speed. Uses
an encoder feedback.
A1-03 Initialize Parameters
The Drive can be set back to one of three default states via the A1-03 parameter.
1. User Initialization – 1110: The modified Drive parameters are returned to the values selected as user settings. User
settings are stored when parameter o2-03= “1: Set Defaults”.
2. 2-Wire Initialization – 2220: The Drive parameters are returned to factory default values with digital inputs S1 and S2
configured as Forward Run and Reverse Run, respectively.
3. 3-Wire Initialization – 3330: The Drive parameters are returned to factory default values with digital inputs S1, S2, and
S5 configured as Run, Stop, and Forward/Reverse respectively.
After an initialization is performed, parameter A1-03 will automatically be set back to 0.
Setting Description
0 V/f Control without PG
1 V/f Control with PG
2 Open Loop Vector (factory default)
3 Flux Vector (Closed Loop Vector)
Setting Description
0 No Initialize (factory default)
1110 User Initialize
2220 2-Wire Initialize
3330 3-Wire Initialize