Programming
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D Page D-15
8
9
10
11
B
C
D
1
2
3
4
5
6
7
E
Functional Description
IMPORTANT You MUST carry out an Autotune if you intend to use the drive in either of the two vector control
modes. If you are using it in Volts/Hz control an Autotune is not necessary.
Autotune can only be initiated from the “stopped” condition. When the test is complete, the stack is
disabled and ENABLE is set to FALSE.
Note Refer to the Chapter 4/5: The Autotune Feature for details on how to perform an Autotune.
Standard Autotune (MODE = 0 or 1)
The Standard Autotune feature identifies and loads values into the parameters below. These are in the
MOTOR DATA function block and also accessible via the QUICK SETUP menu. Autotune will overwrite
any previous entry made for these parameters.
Parameter Description Note
ENCODER INVERT Encoder direction Parameter is only set up if drive is configured
to run as Closed-loop Vector
Not measured by Stationary Autotune
MAG CURRENT Magnetising current Not measured by Stationary Autotune
STATOR RES Per phase stator
resistance
LEAKAGE INDUC Per phase stator leakage
inductance
MUTUAL INDUC Per phase mutual
inductance
ROTOR TIME CONST Rotor time constant This is identified from magnetising current
and motor nameplate rpm
♦ The Stationary autotune sequence does not rotate the motor and requires the correct value of MAG
CURRENT to be entered.
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