Siemens siprotec 7SA6 User Manual page 488

Control During Operation
System (SCADA)
Interface
Division of
Messages
7-4
Figure 7-2 Function selection screen in DIGSI
The system interface (if available) is generally hardwired and transfers all device
information to a master station via data cable or optical fibre cable.
The messages are categorized as follows:
• Event Log: these are operating messages that can occur during the operation of the
device. They include information about the status of device functions, measurement
data, system data, and similar information.
• Trip Log: these are fault messages from the last eight network faults that were
processed by the device.
• Sensitive Earth Fault Log: Earth fault messages, if the device has sensitive earth
fault detection. For networks with non-earthed star-point or star-point earthed by a
Peterson coil.
• Switching statistics; these values include a counter for the trip commands initiated
by the device, accumulated currents interrupted by the individual poles of the circuit
breaker.
• Erasing and setting the messages named above.
A complete list of all message and output functions that can be generated by the
device, with the associated information number (FNo), can be found in Appendix B.
The lists also indicate where each message can be sent. The lists are based on a
®
SIPROTEC 4 device with the maximum complement of functions. If functions are not
present in the specific version of the device, or if they are set as "'LVDEOHG" in device
configuration, then the associated messages cannot appear.
®
4 - example
C53000-G1176-C133-1
7SA6 Manual