YASKAWA V1000 Series Installation & Start-Up Manual page 163

Before Auto-Tuning the Drive
■
Check the items below before Auto-Tuning the drive:
Basic Auto-Tuning Preparations
• Auto-Tuning automatically determines the electrical characteristics of the motor.
This is fundamentally different from other types of Auto-Tuning features used in
servo systems.
• Before auto-tuning, be sure the input supply voltage equals or exceeds the motor
rated voltage. Performance can be enhanced by using a motor with a base voltage
that is 20 V (40 V for 400 V class models) lower than the input supply voltage.
This may be of special importance when operating the motor above 90% of base
speed, where high torque precision is required.
• Auto-Tuning is not possible with permanent magnet motors.
• To cancel Auto-Tuning, press the
• Digital input and output terminal status during Auto-Tuning is described in the
next table.
Auto-Tuning Type
Auto-Tuning for Energy Savings
in V/f Control
Rotational-Type Auto-Tuning
Auto-Tuning for Resistance between Lines
NOTICE: It is recommended that Rotational Auto Tuning be performed with the load
disconnected. Failure to comply could result in improper drive operation. If rotational Auto-
Tuning is performed for a motor coupled to a load, the motor constants will be inaccurate and
the motor may exhibit abnormal operation. Disconnect or decouple the motor from the load.
WARNING! When Auto-Tuning a motor that is used on an application in conjunction with a
brake, take special precaution to insure the brake stays applied. Auto-Tuning activates the
drive multi-function outputs per the table below. Therefore, a brake may be released while the
motor is uncoupled from the load, resulting in an unsafe condition. Proper precautions must
therefore be taken prior to performing Auto-Tuning.
YASKAWA TM.V1000.01 V1000 Drive Installation & Start-Up Manual (Preliminary 01-19-07)
STOP key on the LED operator.
Digital Input
Not available Works the same during normal operation
Not available Works the same during normal operation
Not available Maintains the status at the start of Auto-Tuning
4.5 Test Run
Digital Output
163
4