Siemens 6RA70 specifications Speed Setpoint Selection, Source of Speed Setpoint P433 =

9.2 Speed Setpoint Selection

With factory defaults, the Base Drive Panel is automatically configured to get the speed reference from the main setpoint analog input at terminals 4 and 5 on connector X174. The default scaling provides, +10 volts at terminals 4 with respect to 5, equals 100% speed setpoint in the forward direction. If the input is -10 volts at terminals 4 with respect to 5 then -100% speed setpoint in the reverse direction is provided.

Alternatively, the drive can be configured receive the speed setpoint 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 source of the speed setpoint is required, it can be set using parameter P433. The normal choices are:

Source of Speed Setpoint	P433 =
Main setpoint analog input (factory default setting)	K0011
Serial Interface 1, X300, USS protocol, Word 2	K2002
Serial Interface 2, X172, USS protocol, Word 2	K6002
Technology Board or First Communication Board, Word 2	K3002
Second Communication Board, Word 2	K8002
Serial Interface 3, CUD2 X162, USS protocol, Word 2	K9002

The speed setpoint can come from many other sources such as other analog inputs, other words in the serial protocols, MOP function, and other freely selectable function in the base drive software. The ultimate selection of the setpoint source depends on the application requirements. To use any other source, locate the connector number for the source and set P433 to that value.

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