Parameters: 13-** Smart Logic Control - Danfoss VLT AutomationDrive FC 361 Programming Manual

Parameter Descriptions

4.12 Parameters: 13-** Smart Logic Control

Smart logic control (SLC) is a sequence of user-defined
actions (see parameter 13-52 SL Controller Action) executed
by the SLC when the associated user-defined event (see
parameter 13-51 SL Controller Event) is evaluated as true by
the SLC.
The condition for an event can be a particular status, or
that the output from a logic rule or a comparator operand
4 4
becomes true. That leads to an associated action as
illustrated:
Par. 13-51
SL Controller Event
Running
Warning
Torque limit
Digital input X 30/2
. . .
Par. 13-43
Logic Rule Operator 2
. . .
. . .
Par. 13-11
Comparator Operator
=
TRUE longer than..
. . .
. . .
Illustration 4.36 Smart Logic Control (SLC)
Events and actions are each numbered and linked in pairs
(states). This means that when the 1
(becomes true), the 1
conditions of the 2
nd
true, the 2 action is executed, and so on. Only 1 event is
evaluated at any time. If an event is evaluated as false,
nothing happens (in the SLC) during the current scan
interval and no other events are evaluated. This means
that when the SLC starts, it evaluates the 1
st
only the 1 event) in each scan interval. Only when the 1
event is evaluated true, the SLC executes the 1
starts evaluating the 2
20 events and actions.
When the last event/action has been executed, the
sequence starts over again from the 1
Illustration 4.37 shows an example with 3 events/actions:
116
VLT® AutomationDrive FC 361
Par. 13-52
SL Controller Action
Coast
Start timer
Set Do X low
Select set-up 2
. . .
st
event is fulfilled
st action is executed. After this, the
nd
event are evaluated and if evaluated
st
event (and
st
nd
event. It is possible to program 1–
st
event/action.
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Start
event P13-01
Stop
event P13-02
State 4
13-51.3
13-52.3
Illustration 4.37 Events and Actions
Starting and stopping the SLC
Start and stop the SLC by selecting [1] On or [0] Off in
parameter 13-00 SL Controller Mode. The SLC always starts
in state 0 (where it evaluates event [0]). The SLC starts
when the Start Event (defined in parameter 13-01 Start
Event) is evaluated as true (provided that [1] On is selected
in parameter 13-00 SL Controller Mode). The SLC stops when
the stop event (parameter 13-02 Stop Event) is true.
Parameter 13-03 Reset SLC resets all SLC parameters and
starts programming from scratch.
NOTICE
SLC is only active in auto-on mode, not hand-on mode.
st
action and
State 1
13-51.0
13-52.0
State 2
13-51.1
13-52.1
State 3
13-51.2
13-52.2
Stop
event P13-02
Stop
event P13-02
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