Parameter and variable descriptions – Rockwell Automation 1557 MEDIUM VOLTAGE AC DRIVE User Manual
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PARAMETER AND VARIABLE DESCRIPTIONS
1557-UM050F-EN-P – June 2013
Autotune dc Link Time Constant [Autotune Tdc]
Linear number:
128
Minimum value:
0.000 sec
Maximum value:
0.160 sec
Default value:
0.000 sec
This parameter specifies the value of dc link time constant determined during autotuning. If the dc link time
constant measurement is successful, then parameter "T dc link" in "P Current Control" is set equal to the value of
this parameter. If the dc link time constant measurement fails, then parameter "T dc link" is not changed.
Autotune Stator Resistance [Autotune Rs]
Linear number:
140
Minimum value:
0.00 pu
Maximum value:
0.20 pu
Default value:
0.00 pu
This parameter specifies the value of motor stator resistance determined during autotuning. If the stator resistance
autotuning is suc
cessful, then parameter “ R Stator “ in “ P Motor model” is set equal to the value of this
parameter. If the stator resistance autotuning fails, then parameter “ R stator” is not changed.
Autotune Leakage Inductance [Autotune Ls]
Linear number:
141
Minimum value:
0.00 pu
Maximum value:
0.74 pu
Default value:
0.00 pu
This parameter specifies the value of motor leakage inductance determined during autotuning. If the leakage
inductance autotuning is successful, then parameter "L total leakage" in "P Motor Model" is set equal to the value
of this parameter. If the leakage inductance autotuning fails, then parameter "L total leakage" is not changed.
Autotune Magnetizing Inductance [Autotune Lm]
Linear number:
142
Minimum value:
0.00 pu
Maximum value:
15.00 pu
Default value:
0.00 pu
This parameter specifies the value of motor magnetizing inductance determined during flux regulator autotuning.
If the magnetizing inductance measurement is successful, then parameter "L magnetizing" in "P Motor Model" is
set equal to the value of this parameter. If the magnetizing inductance measurement fails, then parameter "L
magnetizing" is not changed.
Autotune Rotor Time Constant [Autotune T rotor]
Linear number:
143
Minimum value:
0.00 sec
Maximum value:
10.00 sec
Default value:
0.00 sec
This parameter specifies the value of rotor time constant determined during flux regulator autotuning. If the rotor
time constant measurement is successful, then parameter "T rotor" in "P Motor Model" is set equal to the value of
this parameter. If the rotor time constant measurement fails, then parameter "T rotor" is not changed.
Autotune Lmd [Autotune Lmd]
Linear number:
139
Minimum value:
0.00 pu
Maximum value:
10.00 pu
Default value:
0.00 pu
This parameter specifies the value of d-axis magnetizing inductance for synchronous machines determined during
flux regulator autotuning. If the magnetizing inductance measurement is successful, then parameter "Lmd" in "P
Motor Model" is set equal to the value of this parameter. If the magnetizing inductance measurement fails, then
parameter "Lmd " is not changed. This parameter is not used for induction motors
This parameter was added in Rev 5.10 and is not present in 4.xx.