Front Port And Cover Sealing System - GE F650 Instruction Manual

4 HUMAN INTERFACES. SETTINGS & ACTUAL VALUES 4.2 HUMAN MACHINE INTERFACE (HMI)
4.2.3.2 COMMAND PUSH BUTTON
The unit incorporates a command pushbutton located at the bottom right side of the faceplate, with three options: local,
remote, and off. The first option (LOCAL) allows executing operations in local mode (HMI, front port, and rear COM2 port).
The second option (REMOTE) allows operation execution only through remote communications (COM1 and COM3 -
Ethernet). The third option (OFF) blocks the execution of operations. Each position is identified with an LED indicator, as
follows:
LOCAL operations (green)
REMOTE operations (green)
OFF (red)
Press the command button to switch from local to remote operations mode and vice versa. OFF status (operation inhibited
for maintenance and safety) can be reach pressing the commands pushbutton during several seconds (local-remote-off
sequence).
The local-remote-off sequence can be also available through communications (see chapter 5.8), with a configurable signal
that can be set in the "Setpoint>Relay Configuration>Protection Elements" screen.
4

4.2.4 FRONT PORT AND COVER SEALING SYSTEM

Figure 4–20: shows the detail of the front RS232 communication port and local/remote button access cover sealing system.
The sealing system is similar to the one used in energy meters, using wire and plumb seal.
High quality plastic have been used in the design to withstand extreme environmental conditions, both mechanical and
electrical, sun radiation, humidity, etc. in order to guarantee a long life for the unit.
Cover sealing system
Screen contrast regulator
Electrically isolated RS232 port
Local/remote Operations access
Figure 4–20: DETAIL OF FRONT PORT AND COVER SEALING SYSTEM
GEK-106310AB F650 Digital Bay Controller 4-37