FW-N410-P-M_v0203_01_EN
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2.4
OPERATOR ALARMS
▪
General alarm
When “ALARM” is displayed when no process alarm is present (e.g. no flow, press the “1”
key to display the reason of the alarm. Please consult Appendix B: Problem Solving.
▪
No flow alarm
The N410-P offers a no-flow monitoring feature: if the flowmeter fails to generate a signal
during a certain period of time, the unit will shut-off the control output(s) and bring the batch
controller in HOLD and alarm mode: an alarm message will be displayed, indicating the type
of alarm: “NO FLOW”.
To clear the alarm press RESET once, while the batch controller remains in HOLD mode.
When in HOLD mode, the batch can be continued or terminated. (See
“Interrupting and
ending the batch process”)
▪
External alarm
The N410-P can receive an external alarm during a batch. This can be set with SETUP 7.1
–
Alarm. When the alarm is activated a running batch will be interrupted immediately and any
other function will be blocked until the alarm status is cleared.
The display will show ‘EXT ALARM’.
To clear the alarm press RESET once, while the batch controller remains in HOLD mode.
When in HOLD mode, the batch can be continued or terminated.
(See “Interrupting and
end
ing the batch process”)
