YASKAWA U1000 - Page 80

Drive
Multi-function input
PTC
thermistor
MA
Fault output
Multi-function
digital outputs
MB
MC
A3 (0-10 V)
AC
M1
M2
PTC
AI
DIP Switch S4
M3
M4
M5
M6
Figure i.68 Connection of a Motor PTC
The PTC must exhibit the characteristics shown in Figure i.69 in one motor phase. The motor overload protection of the drive
expects 3 of these PTCs to be connected in a series.
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.69 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.
i.5 Start-Up Programming and Operation
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YASKAWA ELECTRIC TOEP C710636 04D U1000 Industrial MATRIX Drive Quick Start Guide