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Parameter Descriptions
3.14 Parameters: 13-** Smart Logic Control
3.14.1 Prog. Features
3
3
Smart Logic Control (SLC) is essentially a sequence of user-
defined actions (see 13-52 SL Controller Action [x]) executed
by the SLC when the associated user-defined event (see
13-51 SL Controller Event [x]) 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
becomes TRUE. That will lead to an associated action as
illustrated:
Events and actions are each numbered and linked together
in pairs (states). This means that when event [0] is fulfilled
(attains the value TRUE), action [0] is executed. After this, the
conditions of event [1] will be evaluated and if evaluated
TRUE, action [1] will be executed and so on. Only one event
will be 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 will be evaluated. This means
that when the SLC starts, it evaluates event [0] (and only
event [0]) each scan interval. Only when event [0] is evaluated
TRUE, will the SLC execute action [0] and start evaluating
event [1]. It is possible to program from 1 to 20 events and
actions.
When the last event / action has been executed, the
sequence starts over again from event [0] / action [0]. The
figure shows an example with three events/actions:
3-106
FC 300 Programming Guide
Starting and stopping the SLC:
Starting and stopping the SLC can be done by selecting .On
[1]. or .Off [0]. in 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 13-01 Start Event) is
evaluated as TRUE (provided that On [1] is selected in
13-00 SL Controller Mode). The SLC stops when the Stop Event
(13-02 Stop Event) is TRUE. 13-03 Reset SLC resets all SLC
parameters and start programming from scratch.
3.14.2 13-0* SLC Settings
Use the SLC settings to activate, deactivate and reset the
Smart Logic Control sequence. The logic functions and
comparators are always running in the background, which
opens for separate control of digital inputs and outputs. .
13-00 SL Controller Mode
Option:
[0]
[1]
13-01 Start Event
Option:
[0]
*
[1]
[2]
[3]
[4]
®
MG.33.MA.22 - VLT
is a registered Danfoss trademark
Function:
Off
Disables the Smart Logic Controller.
On
Enables the Smart Logic Controller.
Function:
FALSE
Select the Boolean (TRUE or FALSE) input
to activate Smart Logic Control.
False [0] enters the fixed value - FALSE
TRUE
True [1] enters the fixed value - TRUE.
Running
Running [2] The motor is running.
In range
In range [3] The motor is running within
the programmed current and speed
ranges set in 4-50 Warning Current Low to
4-53 Warning Speed High.
On reference
On reference [4] The motor is running on
reference.
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