YASKAWA A1000 Quick Start Manual page 25


Control Mode Selection (A1-02)
There are three control modes available. Select the control mode that best suits the application the drive will control.
Control Mode
V/f Control for Induction
Motors
V/f Control with PG Speed
Feedback
Open Loop Vector Control
Closed Loop Vector
Control
<1>
Open Loop Vector Control
for PM
<1>
Advanced Open Loop
Vector Control for PM
<1>
Closed Loop Vector
Control for PM
<1>
<1> For explanations of these control modes, refer to the Technical Manual.

Normal / Heavy Duty Selection (C6-01)
The drive supports two ratings, Normal Duty and Heavy Duty. Both have different output current ratings (refer to the
catalog or the Technical Manual). Set the Duty mode in accordance with the application.
Mode
C6-01
Application
Overload capability (OL2)
L3-02 Stall Prevention during
Acceleration
L3-06 Stall Prevention during
Run
Default carrier frequency

Auto-Tuning (T1-)
Auto-Tuning automatically sets up the motor data relevant drive parameters. Three different modes are supported.
Type Setting
Rotational Auto-
T1-01 = 0
Tuning
YASKAWA Europe TOEP C710616 88A - AC Drive A1000 IP23/54 Floor Standing - Quick Start Guide
Parameter
• General variable speed applications, particularly useful for running multiple motors from a
A1-02 = 0
single drive.
(default)
• When replacing a drive in which parameter settings are unknown.
• For general-purpose applications that do not require high dynamic response but high speed
accuracy.
A1-02 = 1
• This mode should be used if the motor parameters are unknown and Auto-Tuning cannot be
performed.
• General variable speed applications
A1-02 = 2
• Applications requiring high precision, high speed control
• For general, variable-speed applications that requiring precise speed control down to zero
A1-02 = 3 speed, fast torque response, or precise torque control.
• A speed feedback signal from the motor is required.
Derated torque-load applications employing permanent magnet motors (SPM, IPM) and energy
A1-02 = 5
savings.
A1-02 = 6 This control mode can be used to operate an IPM motor for constant torque applications.
• This mode can be used for high precision control of a PM motor in constant torque or variable
A1-02 = 7 torque applications.
• A speed feedback signal is required.
Heavy Duty Rating (HD)
0
Applications with a constant torque like extruders,
conveyors and cranes. High overload capability
might be needed.
150% of drive rated current for 60 s
150%
150%
2 kHz
Application Conditions and Benefits
• Motor can be decoupled from the load and rotate freely
while Auto-Tuning is performed.
• Motor and load can not be decoupled but the motor load
is below 30%.
• Rotational Auto-Tuning gives the most accurate results,
and is therefore highly recommended if possible.
Main Applications
Normal Duty Rating (ND)
Applications where the torque increases with the speed
like fans or pumps. High overload tolerance is normally
not needed.
120% of drive rated current for 60 s
120%
120%
2 kHz Swing PWM
Control Mode (A1-02)
V/f w/PG
V/f (0)
(1)
N/A N/A
5 Start Up
1
OLV (2) CLV (3)
YES YES
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