Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual page 164

With the control units
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Functions
7.4 Setpoint sources
The various fixed setpoints can be selected in two ways:
1. Direct selection:
2. Binary selection:
Table 7- 7
Parameter
P1016 = 1
P1001
P1002
P1003
P1004
P1020
P1021
P1022
P1023
Table 7- 8
Fixed setpoint selected
by
Digital input 3 (DI 3)
Digital input 4 (DI 4)
Digital input 5 (DI 5)
Digital input 6 (DI 6)
DI 3 and DI 4
DI 3 and DI 5
DI 3, DI 4 and DI 5
DI 3, DI 4, DI 5 and DI 6
You will find further information about the fixed setpoints and
block diagrams 3010 and 3011 in the List Manual.
164
Precisely one fixed speed setpoint is assigned to each selection signal (e.g. a digital
input). As several selection signals are selected, the associated fixed speed setpoints are
added together to from a total setpoint.
Direct selection is particularly well suited to controlling the motor using the inverter's
digital inputs.
Precisely one fixed speed setpoint is assigned to each possible combination of selection
signals.
Binary selection should preferably be used with a central control and when linking the
inverter to a fieldbus.
Parameters for direct selection of fixed setpoints
Description
Direct selection of fixed setpoints (factory setting)
Fixed setpoint 1Factory setting: 0 rpm)
Fixed setpoint 2Factory setting: 0 rpm)
Fixed setpoint 3Factory setting: 0 rpm)
Fixed setpoint 4Factory setting: 0 rpm)
Signal source for selection of fixed setpoint 1 (factory setting: 722.3, i.e. selection
via digital input 3)
Signal source for selection of fixed setpoint 2 (factory setting: 722.4, i.e. selection
via digital input 4)
Signal source for selection of fixed setpoint 3 (factory setting: 722.5, i.e. selection
via digital input 5)
Signal source for selection of fixed setpoint 4 (factory setting: 0, i e. selection is
locked)
Function diagram of direct selection of fixed setpoints
BICO interconnection of
selection signals
(example)
P1020 = 722.3
P1021 = 722.4
P1022 = 722.5
P1023 = 722.6
The resultant fixed setpoint corresponds to the
parameter values of ...
P1001
P1002
P1003
P1004
P1001 + P1002
P1001 + P1003
P1001 + P1002 + P1003
P1001 + P1002 + P1003 + P1004
binary
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
selection in function

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