
11.3
Setpoint change-over
Corresponding functions make it possible to change over to other setpoint sources during
operation.
Possible setpoint sources are:
•
Analog inputs
•
Keypad
•
Process input data (network)
•
Parameterisable setpoints (preset values)
•
"Motor potentiometer" function
Details
If no setpoint change-over function is active, the standard setpoint sources are active:
•
0x2860:001 (PAR 201/001)
: frequency setpoint source
•
0x2860:002 (PAR 201/002)
: process controller setpoint source
The setpoint source currently active is shown in
0x282B:002 (PAR 125/002)
.
11.3.1
Priority of the setpoint sources
Since only one setpoint source can be active at a time, the following priorities apply:
1
.
Setpoint selection via network control word if the "Network enable" function is TRUE.
4
0x2631:037 (PAR 400/037)
^
187
2
.
Trigger for setpoint change-over (in the order of the selection list):
1
.
1: TRUE
2
.
11: digital input 1
3
.
12: digital input 2
4
.
13: digital input 3
5
.
...
3
.
Standard setpoint source set.
4
Selection of setpoint source
^
70
Example of allocating priority
•
Digital input 4 is assigned to the "Setpoint source = keypad" function as trigger.
•
Digital input 5 1is assigned to the "Setpoint source = analog input 1" function as trigger.
Digital input 4
Digital input 5
Active setpoint source
FALSE
FALSE
Standard setpoint source set in
0x2860:001 (PAR 201/001)
FALSE
TRUE
Analog input 1
TRUE
FALSE
Keypad
TRUE
TRUE
Keypad (since "Digital input 4" trigger has a higher priority than "Digital input 5" trigger)
11.3.2
Analog input setpoint source
The following functions are used to select analog input 1 or analog input 2 as setpoint source.
Preconditions
A setpoint change-over to the respective analog input is only effected if no setpoint source
with a higher priority has been selected.
4
Priority of the setpoint sources
^
193
Parameter
Name / value range / [default setting]
Info
0x2631:014
(PAR 400/014)
Function assignment: Setpoint = AI1
(Function list: Setpoint=AI1)
•
For possible settings see description for
0x2631:001 (PAR 400/001)
.
^
188
Assignment of a trigger for the "Setpoint = AI1" function.
Trigger = TRUE: analog input 1 is used as setpoint source (if the trigger
assigned has the highest setpoint priority).
Trigger = FALSE: no action / deactivate function again.
4
Analog input 1
^
211
00 Not connected
No trigger assigned (trigger is constantly FALSE).
0x2631:015
(PAR 400/015)
Function assignment: Setpoint = AI2
(Function list: Setpoint=AI2)
•
For possible settings see description for
0x2631:001 (PAR 400/001)
.
^
188
Assignment of a trigger for the "Setpoint = AI2" function.
Trigger = TRUE: analog input 2 is used as setpoint source (if the trigger
assigned has the highest setpoint priority).
Trigger = FALSE: no action / deactivate function again.
4
Analog input 2
^
213
00 Not connected
No trigger assigned (trigger is constantly FALSE).
Flexible I/O configuration
Setpoint change-over
Priority of the setpoint sources
193
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