Siemens SICAM, Manual, Page: 32 / 174

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NOTE
For isolated/compensated systems in case of 2-phase-to-ground and 3-phase-to-ground faults, whenever a
ground fault and phase fault occur at a same time, SICAM FCM indicates phase fault as a priority event on
HMI/Modbus.
For more information about direction determination, refer to 4.1.15 Determination of Fault Direction ,
4.1.16 Direction Determination of Phase Elements , 4.1.17 Directional Ground Fault (Compensated/Resonant-
Grounded) , and 4.1.18 Directional Ground Fault (in Isolated Electrical Power Systems) .
For more information about fault-detection parameters, see Table A-2 for the Fault Parameters > Phase-Fault
Detection menu and Table A-3 for the Fault Parameters > Ground-Fault Detection menu.
Fault-Reset Mechanism
The fault status of the device can be reset through anyone of the following mechanisms:
•
Auto reset as per user-defined time setting
•
Digital input (DC 24 V to DC 60 V)
•
User interface through keypad (Reset)
•
RS485/Modbus interface
The following logic diagram shows the fault-reset mechanism.
[lo_sfcm_faultresetmech, 2, en_US]
Figure 4-3 Logic Diagram for Fault Indication and Fault Reset Mechanism
(1) Binary contact 1, indication on HMI and Modbus, event logs
(2) Binary contact 2, indication on HMI and Modbus, event logs
(3) Binary contact 1 and Binary contact 2, indication on HMI and Modbus, event logs
4.1.3
Device Functions
4.1 Description
32 SICAM, Feeder Condition Monitor, Manual
E50417-H8940-C580-A4, Edition 03.2019