Operating instructions

Functions
5.4 Setpoint sources
CU240S and CU240E Control Units, FW 3.2
96 Operating Instructions, 03/2009, A5E02440075B AA
5.4 Setpoint sources
5.4.1 Selecting frequency setpoint sources
Selecting the setpoint source [P1000]
The speed of the motor can be set via the frequency setpoint. The following sources can be
used to specify the frequency setpoint:
● Analog inputs
● Fixed frequency via digital inputs
● Motorized potentiometer
● Fieldbuses
The frequency setpoint sources available depend on the inverter version.
● For inverters with a fieldbus interface, the 'fieldbus' (P0700 = 6) is pre-selected as the
frequency setpoint source.
● For inverters without fieldbus interface, the analog input (P0700 = 2) is pre-selected as
the frequency setpoint source.
Table 5- 16 Settings to select the possible frequency setpoint sources
Parameter Description
P0003 = 1 Standard: Access to the most frequently used parameters
P1000 = … 0: No main setpoint
1: MOP setpoint / motorized potentiometer (P1031 … P1040)
2: Analog setpoint (P0756 … P0762), factory setting for inverters without fieldbus
interface
3: Fixed frequency (P1001 … P1023)
4: USS on RS 232
6: Fieldbus (P2050 … P2091), factory setting for inverters with fieldbus interface
Adding setpoints from different sources
You can add several setpoints via frequency setpoint source P1000. For more information,
see the List Manual (P1000 in the parameter list and function diagram 5000).