Danfoss vlt fcd 302, Design Manual, Page: 14 / 93

execute [0] action and start evaluating event . It is possible
to programme from 1 to 20 events and [1] actions .
When the last event / action has been executed, the
sequence starts over again from [0] event / [0] action .
Illustration 2.5 shows an example with three event/actions.
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State 1
Event 1/
Action 1
State 2
Event 2/
Action 2
Start
event P13-01
State 3
Event 3/
Action 3
State 4
Event 4/
Action 4
Stop
event P13-02
Stop
event P13-02
Stop
event P13-02
Illustration 2.5 Example - Internal Current Control
Comparators
Comparators are used for comparing continuous variables
(that is, output frequency, output current, analog input
etc.) to fixed preset values.
Par. 13-11
Comparator Operator
=
TRUE longer than.
. . .
. . .
Par. 13-10
Comparator Operand
Par. 13-12
Comparator Value
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Illustration 2.6 Comparators
Logic Rules
Combine up to three boolean inputs (TRUE/FALSE inputs)
from timers, comparators, digital inputs, status bits and
events using the logical operators AND, OR, and NOT.
. . .
. . .
. . .
. . .
Par. 13-43
Logic Rule Operator 2 Par. 13-41
Logic Rule Operator 1
Par. 13-40
Logic Rule Boolean 1
Par. 13-42
Logic Rule Boolean 2
Par. 13-44
Logic Rule Boolean 3
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Illustration 2.7 Logic Rules
Application Example
Parameters
FC
+24 V
+24 V
D IN
D IN
D IN
COM
D IN
D IN
D IN
D IN
+10 V
A IN
A IN
COM
A OUT
COM
R1
R2
12
13
18
19
20
27
29
32
33
37
50
53
54
55
42
39
01
02
03
04
05
06
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Function Setting
4-30 Motor
Feedback Loss
Function
[1] Warning
4-31 Motor
Feedback Speed
Error 100 RPM
4-32 Motor
Feedback Loss
Timeout 5 s
7-00 Speed PID
Feedback Source [2] MCB 102
17-11 Resolution
(PPR) 1024*
13-00 SL
Controller Mode [1] On
13-01 Start
Event [19] Warning
13-02 Stop
Event [44] Reset
key
13-10 Comparat
or Operand [21] Warning
no.
13-11 Comparat
or Operator [1] ≈*
13-12 Comparat
or Value 90
13-51 SL
Controller Event [22]
Comparator 0
13-52 SL
Controller Action [32] Set
digital out A
low
5-40 Function
Relay [80] SL digital
output A
*=Default Value
Notes/comments:
If the limit in the feedback
monitor is exceeded, Warning
90 is issued. The SLC monitors
Warning 90 and in the case
that Warning 90 becomes TRUE
then Relay 1 is triggered.
External equipment can
indicate that service is required.
If the feedback error goes
below the limit again within 5 s
then the drive continues and
the warning disappears. Relay 1
remains triggered until pressing
[Reset] on the LCP.
Table 2.1 Using SLC to Set a Relay
Product Overview
VLT
®
Decentral Drive FCD 302
MG04H102 - VLT
®
is a registered Danfoss trademark 13
2 2