Short description
An input pulse generates a preset number of output pulses with a defined pulse/pause ratio (retriggerable), after a configured delay time has expired.
Connection |
Description |
Input Trg |
You trigger the times for the Edge-triggered wiping relay with a signal at input Trg (Trigger). |
Input R |
The output and the current time Ta are reset to 0 with a signal at input R. |
Parameter |
TH, TL: The pulse width TH and the interpulse width TL are adjustable. N determines the number of pulse/pause cycles TL / TH: Value range: 1...9. Retentivity set (on) = the status is retentive in memory. |
Output Q |
Output Q is set when the time TL has expired and is reset when TH has expired. |
|
0BA2, 0BA3: Only the parameter TH exists. TH represents the off-delay time for the output. Input R is not available
|
Parameters TH and TL
The pulse width TH and the interpulse width TL can be provided by the actual value of another already-programmed function:
Analog comparator: Ax – Ay
Analog trigger: Ax
Analog amplifier: Ax
Analog multiplexer: AQ
Analog ramp: AQ
Analog math: AQ
PI controller: AQ
Up/Down counter: Cnt
You select the required function by the block number.
Timing diagram
TL = 0; N = 1
Description of the function
With the change at input Trg to 1, the time TL (time low) is triggered. After the time TL has expired, output Q is set to 1 for the duration of the time TH (time high).
If input Trg is retriggered prior to the expiration of the preset time (TL + TH), the time Ta is reset and the pulse/pause period is restarted.