Command Push Button; Front Port And Cover Sealing System; Detail Of Front Port And Cover Sealing System - GE Multilin F650 Instruction Manual

4 HUMAN INTERFACES 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 RS232 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).

4.2.4 FRONT PORT AND COVER SEALING SYSTEM

4
Figure 4–16: 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 4–16: DETAIL OF FRONT PORT AND COVER SEALING SYSTEM
GE Multilin F650 Digital Bay Controller 4-35