YASKAWA GA800 Technical Reference page 698

12.2 A: Initialization Parameters
Mode Keypad Screen
Drive Mode Monitors
Parameters
User Custom Parameters
Parameter Backup/Restore
Modified Parameters/Fault
Programming Mode
Log
Auto-Tuning
Initial Setup Screen
Diagnostic Tools
Note:
• When you use A1-04 and A1-05 [Password Setting] to set a password, you cannot change the values set in A1-01 to A1-03, A1-06, A1-07,or
A2-01 to A2-32.
• When H1-xx = 1B [MFDI Function Select = Program Lockout], you must activate the terminal to change parameter settings.
• When you use MEMOBUS/Modbus communications, you must send the Enter command from the controller to the drive and complete the
serial communication write process before you can use the keypad to change parameter settings.
■
A1-02: Control Method Selection
No.
Name
(Hex.)
A1-02 Control Method Selection
(0102)
Note:
When you change the control methods, the parameter values specified by A1-02 and E3-01 [Motor 2 Control Mode Selection] are changed to
their default values.
0 : V/f Control
Use this control method in these applications and conditions:
• For general variable-speed control applications in which a high level of responsiveness or high-precision speed
control is not necessary.
• Applications in which more than one motor are connected to one drive
• When there is not sufficient data to set the motor parameters
• When it is not possible to do Auto-Tuning. The speed control range is 1:40.
1 : V/f Control with Encoder
Use this control method in these applications and conditions:
• For general variable-speed control applications in which a high level of responsiveness or high-precision speed
control is not necessary.
• When there is not sufficient data to set the motor parameters
• When it is not possible to do Auto-Tuning. The speed control range is 1:40.
2 : Open Loop Vector
Use this control method for general variable-speed control applications in which high-precision speed control is
necessary. In this control method, a feedback signal from the motor is not necessary to have high torque response and
high torque when you operate the drive at low speeds. The speed control range is 1:200.
3 : Closed Loop Vector
Use this control method for general variable-speed control applications in which these qualities are necessary:
• A high level of responsiveness
• High-precision speed control up to zero speed
• High-precision torque control. A speed feedback signal from the motor is necessary for this control method. The
speed control range is 1:1500.
698
Table 12.1 Access Level and Available Keypad Screens
0
Yes
Yes
No
No
No
No
No
No
V/f CL-V/f OLV CLV AOLV
Sets the control method for the drive application and the motor.
A1-01 [Access Level Selection] Setting
1
Yes
Yes
Yes
No
No
No
No
No
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
2 3
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Default
(Range)
2
(0 - 8)