Checking And Possible Fine Adjustment Of Maximum Speed; Setting Application Functions; Starting The Drive - Siemens 6RA70 Series Instructions Manual

NOTE
Optimization runs should be executed in the order listed above (precontrol and current controller,
speed controller, and field weakening control, friction moment and moment of inertial
compensation).
The determined parameters are dependent on the motor temperature. Values set automatically
when the motor is cold can be used as effective defaults.
For highly dynamic drives, the optimization runs P051=25 should be repeated after the drive has
been operated under load (i.e. when motor is warm).

Checking and possible fine adjustment of maximum speed

After the optimization runs have been executed, the maximum speed should be checked and if necessary
adjusted to its final value. If it is necessary to change the maximum speed setting by more than about 10%, the
control response of the speed control loop must be checked. It may be necessary to repeat the speed controller
optimization run or re-optimize the controller manually.
The optimization runs for field weakening and friction motor and moment of inertial compensation must be
repeated every time the maximum speed setting is changed.

Setting Application Functions

9

9.1 Starting the Drive

With factory defaults, the Base Drive Panel is automatically configured to enable the drive with terminal 38 at
X171 and to start the drive with terminal 37 also at connector X171. The function of these terminals is fixed.
With all other methods of starting the drive, terminals 37 and 38 act as permissive to start and must be
energized to allow the selected method to start the drive.
Alternatively, the drive can be configured to start from the CUD1 serial ports at connectors X300 or X172, and
from optional communication boards or serial port located on the optional CUD2 board.
If an alternative method of starting the drive is required, the source of the start command is selected with
parameter P654. The normal choices are:
Source of Start Command
Terminal 37 @ connector X171 (factory default setting)
Serial Interface 1, X300, USS protocol, Word 1, Bit 0
Serial Interface 2, X172, USS protocol, Word 1, Bit 0
Technology Board or First Communication Board, Word 1, Bit 0
Second Communication Board, Word 1, Bit 0
Serial Interface 3, CUD2 X162, USS protocol, Word 1, Bit 0
8-16
SIMOREG DC Master Base Drive Panel Operating Instructions
P654 =
B0001
B2100
B6100
B3100
B8100
B9100
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