Execution Of Optimization Runs; P051 = 25 - Optimization Run For Precontrol And Current Controller For Armature And Field - Siemens 6RA70 Series Instructions Manual

Execution of optimization runs

8
The unit must be in operating state o7.0 or o7.1 (enter SHUTDOWN!).
8.1
Select one of the following optimization runs in key parameter P051:
8.2
P051 = 25
P051 = 26
P051 = 27
P051 = 28
Note: The optimization runs should be performed in the above order.
The SIMOREG converter switches to operating state o7.4 for several seconds and then to o7.0 or o7.1
8.3
and waits for the START command and ENABLE.
Enter the commands START and ENABLE.
The flashing of the decimal point in the operational status display on the PMU (simple operator control
panel) indicates that an optimization run will be performed after the Start command.
If the start command is not given within 30 s, this waiting status is terminated and fault message F052
displayed.
As soon as the converter reaches operating status <o1.0 (RUN), the optimization run is executed.
8.4
An activity display appears on the PMU, consisting of two 2-digit numbers, separated by a bar that moves
up and down. These two numbers indicate (for SIEMENS personnel) the current status of the
optimization run.
P051 = 25
Siemens Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
Optimization run for precontrol and current controller for armature and field
Speed controller optimization run
Optimization run for field weakening
Optimization run for compensation of friction moment and moment of inertia
Optimization run for precontrol and current controller for armature and field (process
lasts approximately 40s).
The following parameters are set automatically: P110, P111, P112, P155, P156, P255,
and P256.
NOTE
Permanent-field motors (and motors with an extremely high residual flux) must be
mechanically locked during this optimization run.
WARNING
The set current limits are not effective during the current controller
optimization run. 75% of the rated motor armature current flows for
approximately 0.7s. Furthermore, individual current spikes of
approximately 120% of the motor rated armature current are
generated.
8-13