Chapter 7: Maintenance; Time Synchronization Failure (Locked Signaling); Locked Indicator (Hmi) - GE Reason RT430 Technical Manual

Chapter 7 – Maintenance
Reason RT430/RT434
GNSS Precision-Time Clock

Chapter 7: Maintenance

1

Time Synchronization Failure (Locked Signaling)

Locked indicator (HMI)

RT430/434
This chapter describes the information to consider for an eventual maintenance.
For any further assistance required please contact the information and call center as
follows:
GE Grid Solutions:
Worldwide Contact Center
Web: www.GEGridSolutions.com/contact
Phone: +44 (0) 1785 250 070
The clock availability is higher than 99.95%, but time synchronization failure may
occur and the locked relay will alarm when it does. If availability rate is lower than
that, the follow actions are recommended:

Check for configuration being transmitted to the unit. During transmission, the
unit should momentarily go out of operation to reboot. This behavior is normal
and no action is required. The Locked indicator will lit as soon as the unit
resumes operation.

Make sure the GNSS antenna is properly connected to the unit.

Make sure the antenna cable being used is in accordance with the
specifications presented in Technical Specification.

Make sure the unit is synchronized with at least 4 satellites by checking the
Web Interface. Otherwise, check the location of the antenna, making sure that it
is installed according to the recommendations of Installation chapter.
If the unit is operating without time reference in the GNSS antenna, the failure may
be signaled in different ways: Local interface, Web Interface, signaling relay, and
data packets from IRIG-B, NTP, PTP and SNMP protocols.
The Locked indicator located in the front panel will be off when there is no time
reference in the GNSS antenna input. As soon as a GNSS antenna is connected, the
indicator will start blinking while it downloads a satellite almanac. This behavior is
normal and no actions are necessary. The Locked indicator will stop blinking and stay
lit as soon as the download is completed (it may take a few minutes when a unit is
moved over long distances or has been out of operation for a long period).
RT430/434
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