Close In Alarm/Open In Alarm - Omron E5CN User Manual

Alarm Hysteresis
4-2-3

Close in alarm/open in alarm

Summary of alarm
operations
Parameters
• When the E5CN is set to "close in alarm," the status of the alarm output is
normally open. When set to "open in alarm," the status of the alarm output
is output inverted or nomally closed.
• Alarm type and close in alarm (normally open)/open in alarm (normally
closed) can be set independently for each alarm.
• Close in alarm/open in alarm is set in the "alarm 1 to 2 open in alarm"
parameters (advanced function setting level). Default is "n-o: close in
alarm".
Alarm Output Function
Close in ON
alarm
OFF
Open in ON
alarm
OFF
• Alarm output turns OFF (relay contact open) at a power interruption and
for about two seconds after the power is turned ON regardless of the
close in alarm/open in alarm setting
The figure below visually summarizes the above description of alarm opera-
tions (when alarm type is set to "lower-limit alarm with standby sequence" and
E5CN is set to "close in alarm").
Alarm value
Alarm
Output
When "alarm 1 open in alarm" (advanced function setting level) is set to "open
in alarm", the heater burnout alarm and input error output also become "open
in alarm."
Symbol Parameter : Level
-84
@
Alarm 1 to 2 hysteresis:
Advanced function setting level
>?1@
Standby sequence reset method:
Advanced function setting level
-8 :
@ Alarm 1 to 2 open in alarm:
Advanced function setting level
@:1 or 2
ON
OFF
OFF
ON
Alarm type: lower-limit alarm with
standby sequence
PV
Standby sequence
canceled
Alarm
Alarm
Alarm
Section 4-2
Output Alarm LCD
Lit
Out
Lit
Out
Alarm hysteresis
Time
ON
OFF
ON (closed)
OFF (open)
Description
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