GE Multilin W650 - Software Architecture; Communications Architecture

GEK-113032A W650 Wind Generator Protection System 1-9
1 GETTING STARTED 1.2 OVERVIEW
1
1.2.3 SOFTWARE ARCHITECTURE
The firmware (software embedded in the relay) has been designed using object oriented programming techniques (OOP).
These techniques are based on the use of objects and classes, and provide the software architecture with the same
characteristics as the hardware architecture, i.e., modularity, scalability and flexibility.
1.2.4 COMMUNICATIONS ARCHITECTURE
The main processor performs protection, control, and communication functions, incorporating two internal processors, one
for generic use and a second one dedicated for communications.
A dedicated serial port is used for communication between the main processor and the human-machine interface. The
serial connection provides great immunity against electromagnetic disturbances, thus increasing system safety.
All W650 units incorporate an RS232 serial port on the front of the relay. There is also a possibility to incorporate up to two
additional communication modules on the rear.
One of the modules provides asynchronous serial communications, using different physical media (RS485, plastic or glass
fiber optic) depending on the selected model. The module incorporates two identical ports, COM1 and COM2. The COM2
port is multiplexed with the front port.
Available options are:
Table 1–1: REAR SERIAL COMMUNICATIONS BOARD 1
The other module provides Ethernet communications (COM3 port), using 10/100BaseTX (self-negotiable speed) or
100BaseFX connectors, depending on the selected model. The most complete models include a double redundant
100BaseFX fiber optic port. Redundancy is provided at the physical level; the unit incorporates internally duplicated and
independent controllers for extended system reliability and accessibility.
Available Options are:
Table 1–2: REAR ETHERNET COMMUNICATIONS BOARD 2
For options C and D it is required to select the active physical media, by means of an internal selector inside the module.
The factory configuration for this selection is the 10/100BaseTX port.
Finally, internal communication with input and output modules is performed via an internal CAN bus. This fact provides
increased communication speed, as well as the possibility of acknowledgement of modules, abnormalities, etc. As this is a
serial port supporting a communications protocol, it provides extraordinary immunity against external or internal
disturbances.
BOARD CODE FUNCTIONALITY
F None
A Redundant RS 485
p Redundant plastic fiber optic
G Redundant glass fiber optic
X Redundant RS485 + Can port (CANopen)
Y Redundant plastic fiber optic + Can port (CANopen)
Z Redundant glass fiber optic + Can port (CANopen)
C CAN port (CANopen)
M RS485 + CAN port (CANopen)
BOARD
CODE
FUNCTIONALITY
B One 10/100BaseTX port (self-negotiable speed)
C One 10/100BaseTX port and one 100BaseFX port.
D One 10/100BaseTX port and redundant 100BaseFX ports
E Redundant 10/100BaseTX ports