Detailed description
Original instructions
Parametering
Setting parameters for the function block is achieved through specification of the factor GAIN as well as setting parameters for the delayed time constant LAG.
The unit jump at input X (jump at input X from 0 to 1.0) follows output Y with a delay. Along an e-function
it will approximate the value .
Operating modes
There are three operating modes, which are selected via the inputs MAN and HALT:
Operating mode
MAN
HALT
Meaning
Automatic
0
0
The function block operates as described in "Parametering".
Manual mode
1
0 or 1
The manual value YMAN will be transmitted fixed to the output Y.
Halt
0
1
The output Y will be held at the last calculated value.
Example
The diagram shows an example of the jump response of the LAG device: Input X jumps to a new value and output Y follows an e-function for input X.
Jump response for function block LAG1 if GAIN = 1