Siemens 6RA70 Checking and possible fine adjustment of maximum speed, Starting the Drive

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.

9Setting Application Functions

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	P654 =
Terminal 37 @ connector X171 (factory default setting)	B0001
Serial Interface 1, X300, USS protocol, Word 1, Bit 0	B2100
Serial Interface 2, X172, USS protocol, Word 1, Bit 0	B6100
Technology Board or First Communication Board, Word 1, Bit 0	B3100
Second Communication Board, Word 1, Bit 0	B8100
Serial Interface 3, CUD2 X162, USS protocol, Word 1, Bit 0	B9100

8-16	Siemens Energy & Automation
	SIMOREG DC Master Base Drive Panel Operating Instructions