On Delay Block; Counter Block - Siemens SIDOOR ATD4 W Series System Manual

SIDOOR functions
4.3 Extended functions
①
Input signal
②
Output signal
③
The output signal changes after 3 detected signal periods after the 4th edge
• An input tolerance of (±) 40 ms is assumed.
• Duty cycle: 20 % (17 to 23 %)
• 1 Hz frequency detection:
– T = 1000 ms (±2 %)
– t = 200 ms
on
– t = 800 ms
off
– Pulse/pulse ratio V = 25 %
• 0.5 Hz frequency detection:
– T = 2000 ms (±2 %)
– t = 400 ms
on
– t = 1600 ms
off
– Pulse/pulse ratio V = 25 %
Figure 4-10 Frequency-based input signal detection
The outputs Q24 or Q26 become active when the analysis algorithm detects a frequency of 1 Hz
with a 20 % duty factor in the input signal. The outputs Q25 or Q27 become active when the
analysis algorithm detects a frequency of 0.5 Hz with a 20 % duty factor in the input signal.
The maximum response time at the output, i.e. the time after which the system can detect an
error or a deviation in the input signal frequency, corresponds to the period of the frequency to
be detected. Accordingly, a frequency of 1 Hz results in a maximum response time of 1 s and a
frequency of 0.5 Hz results in a maximum response time of 2 s.
4.3.9.9

On delay block

The "OnDELAY" block delays the input signal at the output Q28 by 2 s and at the output Q29 by
5 s.
4.3.9.10

Counter block

The "COUNTER" block increments the internal counter value in the event of a positive edge at the
input.
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ATD4xxW for industrial applications
System Manual, 06/2022, A5E51901827B AA