5.1 A: Initialization
Setting 2: Open Loop Vector Control
Use this mode for general, variable-speed applications with a speed control range o f 1:200 that require precise speed
control, quick torque response, and high torque at low speed without using a speed feedback signal from the motor.
Setting 3: Closed Loop Vector Control
Use this mode for general, variable-speed applications that require precise speed control down to zero speed, quick
torque response or precise torque control, and a speed feedback signal from the motor. The speed control range is up to
1:1500.
Setting 7: Closed Loop Vector Control for PM Motors
Use this mode for high-precision control of a PM motor in constant torque or variable torque applications. The speed
control range reaches 1:1500. A speed feedback signal is required.
■ A1-03: Initialize Parameters
Resets parameters back to the original default values. After initialization, the setting for A1-03 automatically returns to 0.
No.
Parameter Name
Setting Range
Default
A1-03
Initialize Parameters
0, 1110, 2220, 5550
0
Setting 0: No initialization
Setting 1110: User Initialize
Drive parameters are reset to values selected by the user as User Settings. User Settings are stored when parameter o2-03
is set to “ 1: Set defaults”.
Note: U ser Initialization resets all parameters to a user-defined set o f default values previously saved to the drive. Set param eter o2-03
to 2 to clear the user-defined default values.
Setting 2220: 2-Wire Initialization
Resets all parameters back to their original default settings with digital inputs S1 and S2 configured as Forward run and
Reverse run, respectively.
Setting 5550: oPE04 Reset
An oPE04 error appears on the digital operator when a terminal block with settings saved to its built-in memory is
installed in a drive that has edited parameters. Set A1-02 to 5550 to use the parameter settings saved to the terminal block
memory.
Notes on Parameter Initialization
The parameters shown in
Table 5.1
will not be reset when the drive is initialized by setting A1-03 = 2220 or 3330.
Although the control mode in A1-02 is not reset when A1-03 is set to 2220 or 3330, it may change when an application
preset is selected.
Table 5.1 Parameters not Changed by Drive Initialization
No.
Parameter Name
A1-00
Language Selection
A1-02
Control Method Selection
E1-03
V /f Pattern Selection
E5-02
Motor Rated Capacity (for PM)
E5-03
Motor Rated Current (for PM)
E5-04
Motor Poles (for PM)
E5-05
Motor Stator Resistance (for PM)
E5-06
Motor d-Axis Inductance (for PM)
E5-07
Motor q-Axis Inductance (for PM)
E5-09
Motor Induction Voltage Constant 1 (for PM)
F6-08
Communications Parameter Initialization
L8-35
Installation Selection
o2-04
Drive M odel Selection
YASKAWA ELECTRIC SIEP C710616 33D YASKAWA AC Drive L1000A Technical Manual
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