The statement Value Ramp can apply rising and falling ramps to the input signal and connect the ramped signal to the output..
A second input enables or disables the ramps.
CAUTION
A value 0 for slope parameters is not recommended, since the output value will not be changed in that direction any more. When P1 = 0, the output signal will not increase any more. When P2 = 0 the output value cannot decrease any more.
The value ramp heaves as shown in the following two picture.
The first picture shows the behavior using only the input “In Value”. The input “In Direct” is set to the value false in the statements property sheet.
Fig. 255. Value Ramp: One Input
The next picture shows the behaviour using both inputs “In Value” and “in Direct”. As soon as input “In Direct” switches to the value true, the output will follow the input “in Value” directly. Otherwise the ramps will be applied.
Fig. 256. Value Ramp: Two Inputs
Fig. 257. Wire-sheet Icon
Fig. 258. Property Sheet
Fig. 259. Slot Sheet
Table 151. Inputs
Inputs |
Type |
Functional description |
In Value |
numeric |
Input value |
In Direct |
boolean |
binary input When this input value is false, the rising and falling ramps are enabled. When the input is true the output follows the input “In Value” directly without ramps. |
In Enabled |
boolean |
If the input “In Enabled” is set to false disabled in the slot sheet, the output “Out” will be disabled and is set to the value “0”. |
Table 152. Outputs
Outputs |
Type |
Functional description |
Out Y1 |
numeric |
Sequence Y1 output (heating) |
Out Y2 |
numeric |
Sequence Y2 output (mixing dampers; energy recovery) |
Out Y3 |
numeric |
Sequence Y1 output (cooling) |
Table 153. Parameter List
Description |
Value Range |
Default Value |
Unit |
Rising slope |
0...∞ |
1 |
1 / min |
Falling slope |
0...∞ |
1 |
1( min |