YASKAWA Z1000 - Section Safety

Resistance ( )
Class F
150 ºC
Class H
180 ºC
Tr: threshold value
Temperature
Tr’
Tr + 5K (oH4 Fault Level)TrTr - 5K (oH3 Alarm Level)
Figure i.58 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.
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Auto-Tuning for Induction Motors
This feature automatically sets the V/f pattern and motor parameters E1-oo and E2-oo for an induction motor.
Table i.27 Types of Auto-Tuning for Induction Motors
Type Setting Application Conditions and Benefits
Control
Mode
V/f
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
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
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T1-01: Auto-Tuning Mode Selection
Sets the type of Auto-Tuning to be used.
No. Name Setting Range Default
T1-01 Auto-Tuning Mode Selection 2, 3 2
Setting 2: Stationary Auto-Tuning for Line-to-Line Resistance
Setting 3: Rotational Auto-Tuning for V/f Control Energy Saving
i.5 Start-Up Programming and Operation
60
YASKAWA ELECTRIC TOEP C710616 54A YASKAWA AC Drive - Z1000 Quick Start Guide