RUN Modes
Manual Part Number:
5-06-4900-53-0
Revision Level: C
ECO 044952
Revision Date:
May 08, 2018
Page
3-4
3.3
RUN Modes
After power-up and self-test, and analyzer immediately enters into one of its Run modes
– Normal,
O
2
Alarm Active, Inerting Control Active, or Fault Active. The Run mode active at any time,
provided no manual input is received at the front panel or service port, is determined by the
analyzer setup parameters entered at the factory, and by the user, compared against the
analyzer’s monitored inputs and other monitored hardware in real time.
3.3.1 NORMAL Mode
The Model Mini-ICS initiates NORMAL mode when it is continuously measuring the Oxygen
concentration of the sample gas and updating the display and outputs accordingly, AND it has not
detected any Alarm, or Fault conditions, AND it has not detected any user input. A solid lit
“NORMAL” indicator LED indicates to the user that the instrument is on-line, the system is
operating properly, and the measured process Oxygen levels are within the analyzer’s
programmed parameters.
When the measured process Oxygen concentration falls outside of programmed O
2
Alarm
parameters, and/or the system experiences a fault condition, the Model 11000-ICS analyzer enters
into O
2
Alarm Active, and/or Fault Active accordingly. The system aborts Normal mode, and the
“NORMAL” indicator LED goes out.
When the Model 11000-ICS analyzer detects user-input, it enters into one of the USER modes
accordingly
– Gas Calibration, Set O
2
Alarm, Set High ICS Limit, Set Low ICS Limit, View Active
Faults, (and User Setup, section 4.1). The analyzer does not abort Normal mode when user input
is detected EXCEPT for Calibrate mode. In any User mode but Calibrate, the system continues to
monitor the measured process. The “NORMAL” indicator LED flashes, to indicate to the user that
the system is still on-line and operating normally.
3.3.2 O
2
ALARM ACTIVE Mode
The Model Mini-ICS initiates O
2
Alarm mode when it has detected that the measured Oxygen
concentration has exceed the set threshold value of the O
2
Alarm (sectio
n 3.2.2). The “O
2
ALARM”
indicator LED will light, the
“NORMAL” indicator LED will go out. The O2 Alarm relays will change
state according to the analyzer configuration (Appendix C, Factory Setup). The Alarm status will
be cleared automatically when the measured Oxygen concentration is within the set threshold
value of the O
2
Alarm. The “O
2
ALARM” indicator LED will go out, and the O
2
Alarm relays will
return to their non-active state according to the analyzer configuration. The O
2
Alarm Active mode
is not affected by activation of any user mode EXCEPT Calibration.
3.3.3 INERTING CONTROL ACTIVE Mode
The Model Mini-ICS initiates Inerting Control Active mode when it has detected that the measured
Oxygen concentration has exceed the set threshold value of the High Inerting Control Limit
(section 3.2.3). It will also become active when the system is in Fault Active mode, according the
analyzer configuration (Appendix C, Factory Setup). The Inerting Control Active mode is not
affected by activation of any user mode.
