GE Multilin F650 Instruction Manual page 17

1.2 OVERVIEW 1 GETTING STARTED
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Figure 1–6: 650 CONCEPT BLOCK DIAGRAM
Contact Inputs/Outputs are signals associated to the physical input/output contacts in the relay
CT and VT inputs are signals coming from the inputs of current and voltage transformers, used for monitoring the power
system signals.
CAN Bus Inputs/Outputs: are signals associated to physical input/output contacts from independent modules connected
to the 650 unit via a CAN Bus.
PLC: Programmable Logic Controller. Control module that enables the unit configuration (assignment of inputs/outputs)
and the implementation of logic circuits.
Protection Elements: Relay protection elements, for example: Overcurrent, overvoltage, etc.
Remote inputs and outputs provide a means of sharing digital point state information between remote devices using IEC
61850 GSSE and GOOSE messages.
Analog Inputs are signals associated with transducers.
1-8 F650 Digital Bay Controller GEK-106310Q