Lenze TCF Series - Manual (Page 66)

A APPENDIX - VECTOR MODE
A.1 GENERAL
The TCF Series is a sensorless vector drive that can be operated in speed or torque mode,
as well as V/Hz mode . Operation in Vector mode results in greater torque (200% starting
torque and full torque down to 1 Hz) and more precise speed regulation than V/Hz mode .
However, there are cases where Vector mode is not recommended:
1 . Multiple motor applications .
2 . Where required motor data is not available .
3 . Where running in Vector mode causes unstable motor operation .
In these cases, it is recommended that the drive be operated in V/Hz mode or Enhanced
V/Hz mode (refer to Parameter 80 - DRIVE MODE) .
A.2
CONFIGURING THE TCF FOR VECTOR MODE
1 . Connect the drive to the motor according to the diagram in Section 9 - TCF
POWER WIRING DIAGRAM .
2 . Apply power to the drive .
3 . Set Parameter 80 - DRIVE MODE to VECTOR SPEED (05) or VECTOR
TORQUE (06), depending on whether it is desired to control speed or torque .
4 . Set Parameters 85-88 and 91 according to the motor's nameplate data .
5 . Set Parameter 81 - AUTO CALIBRATION to CALIBRATION CYCLE
ENABLED (01) . The drive's display will alternate between "CAL" and "- - -" .
6 . Make sure the motor is cold (rotor and windings are at room temperature of
20° to 25° C), and give the drive a START command using one of the Start/
Stop circuits shown in Section 11 - TCF CONTROL WIRING DIAGRAMS . The
drive's display should indicate "CAL" for about 40 seconds while the calibration
procedure is performed . Once the calibration is done, the display will show "- -
-" to indicate that it is stopped . The drive is now ready to be operated . Give the
drive another START command to actually start the motor .
NOTE
• If the motor is hot when the AUTO CALIBRATION is performed, the drive
will not be able to achieve maximum performance .
• In VECTOR SPEED or VECTOR TORQUE mode, if an attempt is made
to start the drive before performing the AUTO CALIBRATION, the drive
will display "nId", and the motor will not operate .
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