Siemens SENTRON PAC4200, Manual, Page: 43 / 252

Description
3.9 Digital inputs and outputs
SENTRON PAC4200
Manual, 09/2008, A5E02316180B-01
43
The output of pulses or edges can be parameterized.
The rising and falling edges are counted.
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Figure 3-15 Types of count signal
The digital output is passive and implemented exclusively as a switch.
The implementation of the pulse shape corresponds to the IEC 62053-31 standard.
Pulse length, turn-off time
(1) Pulse length
(2) Turn-off time
Figure 3-16 Pulse length and turn-off time
● Pulse length:
Time for which the signal at the digital output is "high". The minimum pulse length is
30 ms and the maximum 500 ms.
● Turn-off time:
Time for which the signal at the digital output is "low". The turn-off time depends on the
measured energy, for example, and can be days or months.
● Minimum turn-off time:
The minimum turn-off time is specified by the programmed pulse length.
Digital Inputs
The following functions can be assigned to the digital inputs:
●
Tariff switching for on-peak and off-peak.
● Synchronization of the measuring period by means of the synchronization pulse of a
system control center or other device.
● Synchronization of the internal clock ("Top of minute").