Timers; Logic Rules - Danfoss VLT HVAC Basic Drive FC 100 Series Programming Manual

Parameters
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 - Enter the 'trigger level' for the variable that
*
9999 ] 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.
®
VLT HVAC Basic Drive Programming Guide
13-20 SL Controller Timer
Array [8]
Range:
0 s

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. 13-40
Logic Rule Boolean 1
Par. 13-42
Logic Rule Boolean 2
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:
[0]
[1]
[2]
[3]
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MG18B222 - VLT is a registered Danfoss trademark
Function:
[0 - 3600 Enter the value to define the duration of the
*
s] 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.
Par. 13-41
Logic Rule Operator 1
. . .
. . .
Par. 13-44
Logic Rule Boolean 3
Function:
False Enters the fixed value of FALSE in the
logic rule.
True Enters the fixed value TRUE in the logic
rule.
Running See 13-01 Start Event for further
description.
In range See 13-01 Start Event for further
description.
3
Par. 13-43
Logic Rule Operator 2
. . .
. . .
3-43
3