Yaskawa U1000 Industrial MATRIX Drive - Manual (Page 62)

Resistance ( )
Class F
150 ºC Class H
180 ºC
Tr: threshold value
Temperature
Tr’
Tr + 5K (oH4 Fault Level) Tr Tr - 5K (oH3 Alarm Level)
Figure i.49 Motor PTC Characteristics
Set up overheat detection using a PTC using parameters L1-03, L1-04, and L1-05 as explained in the following sections.
u Auto-Tuning
The drive offers different types of Auto-Tuning for induction motors and permanent magnet motors. The type of Auto-Tuning
used differs further based on the control mode and other operating conditions. Refer to the tables below to select the type of
Auto-Tuning that bests suits the application.
Note: The drive will only show Auto-Tuning parameters that are valid for the control mode that has been set in A1-02. If the control mode is for
an induction motor, the Auto-Tuning parameters for PM motors will not be available. If the control mode is for a PM motor, the Auto-
Tuning parameters for induction motors will not be available. Inertia Tuning and ASR Gain Tuning parameters and setting options will be
visible only when the drive is set for operation with CLV or CLV/PM.
Table i.26 Types of Auto-Tuning for Induction Motors
Type Setting Application Conditions and Benefits
Control Mode
V/f V/f w/PG OLV CLV
Rotational Auto-Tuning T1-01 = 0
• Motor can be decoupled from the load and rotate freely
while Auto-Tuning is performed.
• Motor and load cannot be decoupled but the motor load is
below 30%.
• Rotational Auto-Tuning gives the most accurate results,
and is recommended if possible.
– – YES YES
Stationary
Auto-Tuning 2
T1-01 = 4
• Motor and load cannot be decoupled and the load is higher
than 30%.
• A motor test report is available. After entering the no-load
current and the rated slip, the drive calculates and sets all
other motor-related parameters.
– – YES YES
Stationary Auto-Tuning
for Line-to-Line
Resistance
T1-01 = 2
• The drive is used in V/f Control and other Auto-Tuning
selections are not possible.
• Drive and motor capacities differ.
• Tunes the drive after the cable between the drive and motor
has been replaced with a cable over 50 m long. Assumes
Auto-Tuning has already been performed.
• Should not be used for any vector control modes unless the
motor cable has changed.
YES YES YES YES
Rotational Auto-Tuning
for V/f Control
T1-01 = 3
• Recommended for applications using Speed Estimation
Speed Search or using the Energy Saving function in
V/f Control.
• Assumes motor can rotate while Auto-Tuning is executed.
Increases accuracy for certain functions like torque
compensation, slip compensation, Energy Saving, and
Speed Search.
YES YES – –
Stationary
Auto-Tuning 3
T1-01 = 5
• A motor test report listing motor data is not available.
• Motor can be driven with a normal duty mode after Auto-
Tuning. A trial run is performed after Auto-Tuning to
automatically calculate motor parameters needed for vector
control.
– – YES YES
i.5 Start-Up Programming and Operation
62 YASKAWA ELECTRIC TOEP C710636 04C U1000 Industrial MATRIX Drive Quick Start Guide