Danfoss VLT HVAC Drive FC 100 Series, Руководство по программированию, Страница: 71 / 122

13-10 Comparator Operand
Array [6]
Option: Function:
[7] Motor voltage
[12] Analog input AI53
[13] Analog input AI54
[20] Alarm number
[30] Counter A
[31] Counter B
13-11 Comparator Operator
Array [6]
Option: Function:
[0] Less Than (<) Select [0] < for the result of the evaluation
to be TRUE, when the variable selected in
13-10 Comparator Operand is smaller than
the fixed value in 13-12 Comparator Value .
The result will be FALSE, if the variable
selected in
13-10 Comparator Operand is
greater than the fixed value in
13-12 Comparator Value .
[1] Approx.Equal (~) Select [1] ≈ for the result of the evaluation
to be TRUE, when the variable selected in
13-10 Comparator Operand is approximately
equal to the fixed value in
13-12 Comparator Value .
[2] Greater Than (>) Select [2] > for the inverse logic of option
[0] < .
13-12 Comparator Value
Array [6]
Range: Function:
0
*
[-9999 -
9999 ] Enter the ‘trigger level’ for the variable that
is monitored by this comparator. This is an
array parameter containing comparator
values 0 to 5.
3.9.4 13-2*Timers
Use the result (TRUE or FALSE) from timers directly to
define an event (see 13-51 SL Controller Event ), or as
Boolean input in a logic rule (see 13-40 Logic Rule Boolean
1 , 13-42 Logic Rule Boolean 2 or 13-44 Logic Rule Boolean 3 ).
A timer is only FALSE when started by an action (i.e., [29]
Start timer 1 ) until the timer value entered in this
parameter is elapsed. Then it becomes TRUE again.
All parameters in this parameter group are array
parameters with index 0 to 2. Select index 0 to program
Timer 0, select index 1 to program Timer 1, and so on.
13-20 SL Controller Timer
Array [8]
Range: Function:
0 s
*
[0 - 3600
s] Enter the value to define the duration of the
FALSE output from the programmed timer. A
timer is only FALSE if it is started by an action
(see
13-52 SL Controller Action [29-31] and
13-52 SL Controller Action [70-74] Start timer X)
and until the timer value has elapsed. Array
par. containing timers 0 to 7.
3.9.5 13-4* 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.
Select Boolean inputs for the calculation in
13-40 Logic Rule
Boolean 1 , 13-42 Logic Rule Boolean 2 and 13-44 Logic Rule
Boolean 3 . Define the operators used to logically combine
the selected inputs in 13-41 Logic Rule Operator 1 and
13-43 Logic Rule Operator 2 .
. . .
. . .
. . .
. . .
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
130BB673.10
Figure 3.15
Priority of calculation
The results of
13-40 Logic Rule Boolean 1 , 13-41 Logic Rule
Operator 1 and 13-42 Logic Rule Boolean 2 are calculated
first. The outcome (TRUE / FALSE) of this calculation is
combined with the settings of
13-43 Logic Rule Operator 2
and 13-44 Logic Rule Boolean 3 , yielding the final result
(TRUE / FALSE) of the logic rule.
13-40 Logic Rule Boolean 1
Array [6]
Option: Function:
[0] False Enters the fixed value of FALSE in the
logic rule.
[1] True Enters the fixed value TRUE in the logic
rule.
[2] Running See 13-01 Start Event for further
description.
[3] In range See 13-01 Start Event for further
description.
Parameters
VLT
®
HVAC Basic Drive Programming Guide
MG18B222 - VLT
®
is a registered Danfoss trademark 3-43
3 3