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
A
B
C
D
E
1
2
3
4
5
6
7
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 INDUCTION function block and also accessible via the QUICK SETUP menu (ENCODER
INVERT is in the ENCODER function block). 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