Smart Logic Controller - Danfoss VLT 380-500 V Design Manual

Controls
P 1-05
Local
con guration
mode
Local
reference
Illustration 14.7 Configuration Mode
[Hand On]
Hand
Hand ⇒ Off
Auto
Auto ⇒ Off
All keys
All keys
Table 14.2 Conditions for Local/Remote Reference Activation
Parameter 1-00 Configuration Mode determines what kind
of application control principle (for example, speed, torque,
or process control) is used when the remote reference is
active. Parameter 1-05 Local Mode Configuration determines
14 14
the kind of application control principle that is used when
the local reference is active. One of them is always active,
but both cannot be active at the same time.

14.8 Smart Logic Controller

Smart logic control (SLC) is a sequence of user-defined
actions (see parameter 13-52 SL Controller Action [x])
executed by the SLC when the associated user-defined
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
when the output from a logic rule or a comparator
operand becomes true. This condition leads to an
associated action as shown in Illustration 14.8.
134
®
VLT Parallel Drive Modules
P 1-00
Con guration
mode
Speed open/
closed loop
Scale to
RPM or
Hz
Torque
Local
ref.
Scale to
Nm
Scale to
process
unit
Process
closed loop
Parameter 3-13 Refere Active reference
nce Site
Linked to Hand/Auto Local
Linked to Hand/Auto Local
Linked to Hand/Auto Remote
Linked to Hand/Auto Remote
Local Local
Remote Remote
Danfoss A/S © 6/2016 All rights reserved.
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 14.8 Current Control Status/Event and Action
Events and actions are each numbered and linked together
in pairs (states). For example, when [0] event is fulfilled
(attains the value true), [0] action is executed. Afterwards,
the conditions of [1] event are evaluated and if evaluated
true, [1] 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. When the SLC
starts, it evaluates only [0] event each scan interval. Only
when [0] event is evaluated true, the SLC executes [0]
action and starts evaluating [1] event. It is possible to
program 1–20 events and actions.
When the last event/action has been executed, the
sequence starts over again from [0] event/[0] action.
Illustration 14.9 shows an example with 3 event/actions:
Start
event P13-01
State 1
13-51.0
13-52.0
Stop
event P13-02
State 4
13-51.3
13-52.3
Illustration 14.9 Internal Current Control Example
Par. 13-52
SL Controller Action
Coast
Start timer
Set Do X low
Select set-up 2
. . .
State 2
13-51.1
13-52.1
Stop
event P13-02
State 3
13-51.2
13-52.2
Stop
event P13-02
MG37N102