Set/View Alarm-2 Mode; View Active Faults Mode; Return To Run Mode; System Modes - Bacharach Neutronics 5100E Operation Manual

Oxygen analyzer / controller
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Analyzer Operation

3.2.3 SET/VIEW ALARM-2 Mode

To enter Set Alarm-2 mode from run mode using the keypad; scroll through the user mode menu by
pressing momentarily the "MODE" key three (3) times, until the 7-segment alphanumeric display reads
"AL2" (set alarm-2 level) and the "RUN" and "ALM2" indicator LED's flash. The display will show
momentarily "AL2" and then the current alarm-2 threshold level (an O
concentration). Use the "UP" and
2
"DOWN" keys to adjust the alarm-2 setpoint level. Changed settings are automatically saved when the
"MODE" key is pressed to enter the next mode.

3.2.4 VIEW ACTIVE FAULTS Mode

To enter View Active Faults mode from run mode using the keypad; scroll through the user mode menu by
pressing momentarily the "MODE" key four (4) times until the 7-segment alphanumeric display reads "FL",
and the "RUN" and "FAULT" indicator LED's flash. The display will show momentarily "FL" and then the
highest priority active system fault. Press and release the "UP" or "DOWN key to scroll through all active
system faults. Refer to section 4.3.1 for a complete fault code listing, and troubleshooting guide. To exit,
press and release the "MODE" key.

3.2.5 Return to RUN Mode

To exit to run mode from any user mode, using the keypad; scroll through the control panel user mode
menu by pressing repeatedly the "MODE" key until the 7-segment alphanumeric display shows "run". The
display will then show an oxygen concentration. The "RUN", "ALM1", "ALM2", and "FAULT" LED's will flash
for 120 seconds to indicate that the analyzer is in a stabilization period. This is to allow time to sweep the
sample lines with sample gas before returning the unit to on-line service. During the stabilization period,
alarm-1, alarm-2, and fault, relays remain inactive, and held to their last state before the control panel user
mode menu was accessed.
3.3

System Modes

The Model 5100E has five System modes – Self-Test & warm-up, Run, Alarm-1 Active, Alarm-2 Active, or
Fault Active. Self-Test & Warm-up are fixed routines that are initiated upon each start-up. The remaining
system modes, provided no valid manual input is received at the control panel or service port, are initiated
automatically by the analyzer according to setup parameters entered by the user in Setup mode, and are
compared against monitored inputs and other monitored system hardware in real time.
3.3.1 Self-Test & Warm-up Mode
When the Model 5100E is started up, it enters into Self-Test & Warm-up mode automatically (section
2.2.1). When the analyzer self-test is complete, the unit checks the current sensor signal, updates the 7-
segment LED display, status LED's, and Analog outputs, then enters into the appropriate system mode
according to its programmed parameters.

3.3.2 RUN Mode

The Model 5100E initiates Run mode when it is continuously measuring the oxygen concentration of the in-
service sample gas, and updating the display and outputs accordingly, and it has not detected any valid user
input. A flashing "RUN" indicator LED indicates to the user that the instrument is on-line, and the system is
operating properly.
Manual Part Number:
Revision Level: C
File Name: MN-A-0008
Page 3-4
C5-06-4900-08-0
ECO 8029

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