22 REM615 ANSI 5.0 FP1 MOTOR PROTECTION AND CONTROL
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Ethernet Serial
Fiber optic ST
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• = Supported
The relay supports the following high accuracy time
synchronization method with a time-stamping res-
olution of 4 μs required especially in process bus
applications.
• PTP (IEEE 1588) v2 with Power Profile
The IEEE 1588 support is included in all variants
having a redundant Ethernet communication mod-
ule.
IEEE 1588 v2 features
• Ordinary Clock with Best Master Clock algorithm
• One-step Transparent Clock for Ethernet ring
topology
• 1588 v2 Power Profile
•
• Transmit (master): 1-step
• Layer 2 mapping
• Peer to peer delay calculation
• Multicast operation
μs.
The relay can work as a master clock per BMC algo-
rithm if the external grandmaster clock is not avail-
able for short term. The IEEE 1588 support is in-
cluded in all variants having a redundant Ethernet
communication module. In addition, the relay sup-
ports time synchronization via Modbus, and DNP3
serial communication protocols.
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