Eaton EMR-3MP0 - SNTP Commissioning

SNTP server with an accuracy of ≤ 200 µs is recommended. If this cannot be provided, the
connected server's accuracy can be checked in the [Operation / Status Display /
TimeSync / SNTP] menu:
• The server quality gives information about the accuracy of the used server. The
quality should be GOOD or SUFFICIENT. A server with BAD quality should not be used
because this could cause 󰊏uctuations of the time synchronization.
•
The network quality gives information about the network's load and data package
transmission time. The quality should be GOOD or SUFFICIENT. A network with BAD
quality should not be used because this could cause 󰊏uctuations during time
synchronization.
Using two SNTP Servers
When con󰊎guring two SNTP servers, the device always synchronizes to server 1 by
default.
If server 1 fails, the device automatically switches to server 2.
When (after a failure) server 1 recovers, the device switches back to server 1.
SNTP Commissioning
Activate the SNTP time synchronization by means of the [Device Para / Time / TimeSync]
menu:
• Set the parameter »TimeSync« to “SNTP”.
• Set the IP address of the 󰊎rst server in the SNTP menu.
•
Set the IP address of the second server, if available.
• Set all con󰊎gured servers to “active”.
Fault Analysis
If there is no SNTP signal for more than 120 seconds, the SNTP status changes from
“Active” to “Inactive” and an entry in the Event Recorder is set.
The SNTP functionality can be checked in the [Operation / Status Display / TimeSync /
SNTP] menu.
If the SNTP status is not “Active”, please proceed as follows:
• Check if the wiring is correct (Ethernet-cable connected).
• Check if a valid IP address is set in the device at [Device Para / TCP/IP / TCP/IP
con󰊎g].
• Check if the IP address of the SNTP server is set in the device at [Device Para / Time /
TimeSync / SNTP].
• Check if SNTP is used for time synchronization at [Device Para / Time / TimeSync /
TimeSync].
130 www.eaton.com EMR-3MP0
3 Communication Protocols
3.7 Time Synchronization