Digital Input - Siemens SENTRON PAC4200 Manual

2.9.2

Digital input

The following functions can be assigned to the digital input:
● Not used
The digital input is deactivated.
● Pulse input
Edge or pulse counting as required.
Data is transferred with the help of weighted pulses or edges, e.g. a parameterizable
number of pulses or edges is transferred per kWh.
The countable unit can be defined application-specifically. The implementation of the
pulse shape corresponds to the IEC 62053-31 standard.
● On-peak/off-peak tariff switching
● Time synchronization
● Measuring period synchronization (P/Qkum)
● Status with event logging
● Start/Stop (process energy counters and process hours counter)
The process counters for active energy, reactive energy and apparent energy, and also
the process hours counter are started or stopped by changing the state of the digital
input.
● Copy and reset (process energy counters):
– All process energy counters
– The counter for process active energy (kWh)
– The counter for process reactive energy (kvarh)
– The counter for process apparent energy (kVAh)
● Reset (process energy counters and process hours counter):
– All process energy counters and process hours counter
– The counter for process active energy (kWh)
– The counter for process reactive energy (kvarh)
– The counter for process apparent energy (kVAh)
● Write protection
Hardware write protection, to effectively prevent changes to the device parameters
without physical access to the device.
An auxiliary voltage of 12 V DC to 24 V DC is required at the digital input to activate or
deactivate write protection.
You can find more information on this in chapter Hardware write protection (Page 114).
PAC4200
System Manual, 05/2019, A5E02316180B-05
2.9 Function of the digital inputs and outputs
Description
37