Short description
Switch with two different functions:
Pulse switch with off delay
Switch (continuous light)
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Connection |
Description |
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Input Trg |
A signal at input Trg (Trigger) sets output Q (permanent light) or resets Q with an off-delay. When active, output Q can be reset with a signal at input Trg. |
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Input R |
A signal at input R resets the current time Ta and resets the output. |
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Parameter |
T : determines the off-delay time. The output is reset (1 to 0 transition) when the time T expires.
T
L
: determines the period during which the input must be set in order to enable the permanent light function. |
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Output Q |
Output Q is set with a signal at input Trg, and it is reset again after a configured time has expired and depending on the pulse width at input Trg, or it is reset with another signal at input Trg. |
Parameters T, TL, T! and T!L
The off-delay time T, the permanent light time TL, the on-delay prewarning time T!, and the prewarning time period T!L can be provided by the actual value of another already-programmed function:
Analog comparator: Ax - Ay
Analog threshold trigger: Ax
Analog amplifier: Ax
Analog multiplexer: AQ
Analog ramp: AQ
Mathematic instruction: AQ
PI controller: AQ
Up/Down counter: Cnt
For the 0BA7 and later version devices, you can additionally use the actual values of the following already-programmed functions:
On-delay: Ta
Off-delay: Ta
On-/off-delay: Ta
Retentive on-delay: Ta
Wiping relay(pulse output): Ta
Edge triggered wiping relay: Ta
Asynchronous pulse generator: Ta
Stairway light switch: Ta
Multiple function switch: Ta
Stopwatch: AQ
Analog filter: AQ
Average value: AQ
Max/Min: AQ
Threshold trigger: Fre
You select the required function by the block number.
Timing diagram
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0BA2, 0BA3: |
Description of the function
Output Q is set to 1 with a 0 to 1 signal transition at Trg.
If output Q = 0, and input Trg is set hi for at least the duration of TL, the permanent lighting function is enabled and output Q is set accordingly.
The off-delay time T is triggered when the status at input Trg changes to 0 before the time TL has expired.
Output Q is reset when the Ta = T.
You can output an off-warning signal prior to the expiration of the off-delay time (T - T!) that resets Q for the duration of the off prewarning time T!L. A subsequent signal at input Trg always resets T and output Q.
Caution
The time base for T, T! and T!L must be identical.