SSD 605C Product Manual - The Autotune Feature
4-6
Operating the Inverter
605C Frequency Inverter
Set-up using the Sensorless Vector Fluxing Mode
The Inverter must be tuned to the motor in use by matching the motor parameters in the Inverter
to those of the motor being controlled. The most important motor parameters are:
• Per-phase stator resistance
• Per-phase leakage inductance
• Per-phase mutual (magnetising) inductance
Tuning can be performed manually by entering known parameter values, or by calculating the
parameter values using the motor manufacturer’s per-phase equivalent circuit.
Enter values for the following parameters, found under VECTOR SETUP menu at level 2.
VECTOR SETUP
Parameters
Default
Brief Description
VECTOR ENABLE
FALSE
Slip compensation is enabled. Change to
TRUE to enable sensorless vector operation
NAMEPLATE RPM
** 1420 n/min (rpm) Motor nameplate speed
MOTOR POLES
4
Number of motor poles
MOTOR VOLTS
** 400.0 V
Maximum motor output voltage
SUPPLY VOLTAGE
** xxxx.x V
Line-to-line rms supply voltage to the Inverter
(read-only)
MOTOR CONNECTION
** DELTA
Type of motor connection
AUTOTUNE ENABLE
FALSE
Enables the Autotune feature
STATOR RES
** 1.0 Ohm
Motor per-phase stator resistance
FIELD
0.0%
Diagnostic only
LEAKAGE INDUC
** 10.0 mH
Motor per-phase stator leakage inductance
MUTUAL INDUC
** 1000.0mH
Motor per-phase stator mutual (magnetising)
inductance
** These values are dependent upon the “power build” of the unit, indicated by the Product Code
Table 4-3 Important Parameters for the Sensorless Vector Fluxing Mode
The Autotune Feature
The Autotune feature can be used to identify and store the following parameters:
STATOR RES
LEAKAGE INDUC
MUTUAL INDUC
CURRENT FEEDBACK (if selected in the AUTOTUNE function block)
The remaining important parameters are preset to a value depending on the overall “power-
build”, as detailed in the table above.
Operating the Inverter with the Autotune function block enabled starts
the Autotune sequence.
• With ADVANCED view level selected, select the AUTOTUNE
menu at level 4. Press the M key to reveal the AUTOTUNE
ENABLE page.
• Press the M key. The up (∆) and down (∇) keys toggle the
parameter between TRUE and FALSE. Set to TRUE. Press the E
key to exit the parameter.
• On starting the Inverter, the Autotune sequence is initiated. When
complete (after a maximum of 10 seconds), the Inverter is returned to the stopped condition
and the AUTOTUNE ENABLE parameter is reset to FALSE.
Refer to Chapter 6: “Programming Your Application” - AUTOTUNE for further information.
MMI Menu Map
1 SETUP PARAMETERS
2 VECTOR SETUP
MMI Menu Map
1 SETUP PARAMETERS
2 FUNCTION BLOCKS
3 MOTOR CONTROL
4 AUTOTUNE
AUTOTUNE ENABLE
AUTOTUNE MODE
AUTOTUNE ACTIVE