Danfoss VLT CDS 303 User Manual

6.10 Par. Group 13 - Smart Logic Control
6.10.1 Prog. Features
Smart Logic Control (SLC) is essentially a sequence of user
dened actions (see parameter 13-52 SL Controller Action
[x]) executed by the SLC when the associated user dened
event (see parameter 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:
. . .
. . .
Par. 13-11
Comparator Operator
Par. 13-43
Logic Rule Operator 2
Par. 13-51
SL Controller Event
Par. 13-52
SL Controller Action
130BB671.13
Coast
Start timer
Set Do X low
Select set-up 2
. . .
Running
Warning
Torque limit
Digital input X 30/2
. . .
=
TRUE longer than..
. . .
. . .
Figure 6.13 Smart Logic Control (SLC)
Events and actions are each numbered and linked together
in pairs (states). This means that when event [0] is fullled
(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 programme 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 event/actions:
Figure 6.14 Events and Actions
Starting and stopping the SLC:
Starting and stopping the SLC can be done by
selecting .On [1]. or .O [0]. 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 (dened in
parameter 13-01 Start Event) is evaluated as TRUE (provided
that On [1] 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 start programming from
scratch.
NOTICE!
SLC is only active in AUTO mode, not Hand On mode
6.10.2 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 SLC Controller Mode
Option: Function:
[ 0] * O Disables the Smart Logic Control.
[1] On Enables the Smart Logic Control to start when a start
command is present, e.g. via a digital input.
Parameter Descriptions Operating Instructions
MG34M422 Danfoss A/S © Rev. 2013-07-03 All rights reserved. 85
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Danfoss VLT CDS 303 Specifications

General

Brand	Danfoss
Model	VLT CDS 303
Category	DC Drives
Language	English