Danfoss VLT HVAC Series, Programming Manual, Page: 142 / 338

11-21 Store Data Values
Option: Function:
This parameter is used to activate storing of data in non-volatile memory.
[0] * Off Store function is inactive.
[2] Store all setups Stores all parameter values in the EEPROM. The value returns to
Off
when all parameter values have
been stored.
3.13 Main Menu - Smart Logic - Group 13
3.13.1 13-** Prog. Features Prog. Features
Smart Logic Control (SLC) is essentially a sequence of user defined actions (see par.13-52
SL Controller Action
[x]) executed by the SLC when the
associated user defined
event
(see par.13-51
SL Controller Event
[x]) is evaluated as TRUE by the SLC. Events and
actions
are each numbered and linked
together in pairs. 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 illustration shows an example with three
events/actions:
Starting and stopping the SLC:
Starting and stopping the SLC can be done by selecting
On
[1] or
Off
[0] in par.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 par.13-01
Start Event
) is evaluated as TRUE (provided that
On
[1] is selected in
par.13-00
SL Controller Mode
). The SLC stops when the
Stop Event
(par.13-02
Stop Event
) is TRUE. par.13-03
Reset SLC
resets all SLC parameters and
starts programming from scratch.
3 Parameter Description VLT ® HVAC Drive Programming Guide
3-118
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