Emerson Rosemount 700XA Reference Manual page 33

Reference Manual
2-3-9000-744
There are two types of switch panels: 8-stream and 18-stream. The 8-stream switch panel
is the standard panel, and is used when the GC has only one heater/solenoid board
installed; if two heater/solenoid boards are installed, then the 18-stream switch panel is
used.
Figure 2-4: Stream valve switches
A valve has the following three operational modes:
AUTO The valve turns on and off according to the Timed Events table (accessible through
OFF The valve turns off and remains off until the operational mode is changed. To set a
ON The valve turns on and remains on until the operational mode is changed. To set a
Figure 2-5: Status LEDs
Top of switch panel
The switch panels also contain the following status lights that allow you to monitor the
GC's condition:
Working
Unack. Alarm
Active Alarm
Flame
ionization
detector (FID)/
flame
photometric
detector (FPD)
Rosemount 700XA
Rosemount MON2020). To set a valve to AUTO mode, set its switch on the switch
panel to the Up position.
valve to OFF mode, set its switch on the switch panel to the center position (the
switch is neither flipped up nor down).
valve to ON mode, set its switch on th switch panel to the down position.
Turns green when the GC is in Analysis mode.
Turns yellow if there is an unacknowledged alarm.
Turns red if there is an active alarm.
The 18-stream switch panel contains an FID or FPD status LED that can
indicate the following:
• A green light means the flame has ignited.
• A flashing yellow light means an attempt is being made to ignite
the flame.
Equipment description and specifications
June 2022
33