Description
2.8 Communication and system connection
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
169
2.8.3.8 System time
Providing the system time
The system time of the circuit breaker is generated by the ETU600 electronic trip unit.
Synchronization of the system time
The time can be set using the operating keys on the display of the ETU600 electronic trip
unit, or via the USB, Bluetooth and field bus interfaces.
The Simple Network Time Protocol (SNTP) can be used for time synchronization via the
fieldbus interfaces.
Setting the system time
Setting the system time via the SENTRON powerconfig configuration software
The system time of the 3WA circuit breaker can be set using the SENTRON powerconfig
configuration software.
Setting the system time via SNTP at the COM190 communication module
The Simple Network Time Protocol (SNTP) can also be used to set the circuit breaker
system time. SNTP is a simplified version of the NTP and sets the system time
automatically using NTP servers (time servers).
Note
To activate the SNTP function and enable writing of parameters, the COM190 parameter
write protection must be deactivated.
Requirement
• COM190 communication module
• NTP time server
• Optional SENTRON powerconfig configuration software for commissioning
Note
According to the Siemens Cybersecurity Disclaimer, the COM190 should not be operated
in public networks. The SNTP
function of the COM190 is therefore designed for a local
NTP time server in closed networks.
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