Siemens SIPROTEC 6MD665, Manual

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1 Introduction
8
6MD665 Manual
C53000-G1876-C103-3
• Flexible measured value processing with configurable measuring packets.
User-defined func-
tions • Freely programmable links between internal and external signals for the implemen-
tation of user-defined logic functions.
• Logic functions for Boolean and mathematical equations.
• Switching sequences and interlocks.
• Time delays and measured value set point interrogation.
Monitoring func-
tions • Increased reliability thanks to monitoring of internal measuring circuits, auxiliary
power supply, hardware and software.
• Monitoring of communication including the evaluation of the number of faulty trans-
mission messages.
Inter relay commu-
nication • Direct exchange of information between the SIPROTEC
®
4 devices, even without a
connection to the SICAM control centre.
• An interlocked control is also possible if the connection to the control centre or the
control centre itself is disturbed.
Process bus • Communication with SICAM HV modules.
Further functions • Battery-buffered clock which can be synchronised via a synchronisation signal
(DCF 77, IRIG B via satellite receiver), binary input or system interface.
• Indication storage for the last 200 operational indications with real-time assignment.
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