Autotune - Parker 590+ DRV Product Manual

D-24
Programming

AUTOTUNE

The Autotune feature is used to correctly set up the current loop controller parameters
for the motor load.
The process consists of the drive generating a series of current pulses in the armature in order to
determine:
1. The optimal proportional term and integral terms gains in the current controller, and
storing these values as PROP. GAIN and INT. GAIN.
2. The average value at which the normal running pulses would just join up (stop being discontinuous), and storing this value as the
DISCONTINUOUS parameter.
The Autotune is by default performed with the motor field off, and so the final proportional term gain is reduced by 30% to allow for some armature
inductance fall-off when the field is re-applied.
Refer to Chapter 4: Performance Adjustment for details of how to perform an Autotune.
AUTOTUNE
Parameter
AUTOTUNE
Turns the AUTOTUNE procedure on, and selects if field or armature tuning is required. Refer to Chapter 4: Performance Adjustment.
STATE
Indicates the current operating state of the Autotune function block. The FAILED state indicates failure or abort of the Autotune process (for causes
refer to Chapter 4: Performance Adjustment).
METHOD
Controls the method of operation of the Autotune process.
Note that the 2Q MULTI method is always used on a 2Q drive (591) irrespective of the setting of this parameter.
0 : IDLE
1 : RUNNING
2 : SUCCESS
3 : FAILED
•
The default method 4QMULTI uses both thyristor bridges to generate balanced forward and reverse armature current
pulses.
•
The 2QMULTI method only uses the forward thyristor bridge.
0 : 4Q MULTI
1 : 2Q MULTI
Tag
18
1226
609
Range
OFF / ARMATURE / FIELD
See below
See below
DC590+ DRV Series DC Digital Drive