4.2Alarm Hysteresis
E5GN
4–7
Ă• When the E5GN 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 normally closed.
Ă• Alarm type and close in alarm (normally open)/open in alarm (normally
closed) can be set independently for each alarm.
Ă• Close in alarm/open in alarm is set in the alarm 1 open in alarm"
parameters (advanced function setting level). Default is : close in
alarm".
Ă• 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".
Alarm Output Function Output Alarm LCD
Close in
ON ON Lit
Close in
alarm
OFF OFF Out
Open in
ON OFF Lit
Open in
alarm
OFF ON Out
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
operations (when alarm type is set to lowerĆlimit alarm with standby
sequence" and E5GN is set to close in alarm").
Alarm type: lower-limit alarm with
standby sequence
Alarm value
Alarm
output
Standby sequence
canceled
Alarm hysteresis
Time
ON (closed)
OFF (open)
ON
OFF
PV
Symbol Parameter : Level Description
Alarm 1 hysteresis:
Advanced function setting level
Alarm
Standby sequence reset method:
Advanced function setting level
Alarm
Alarm 1 open in alarm:
Advanced function setting level
Alarm
JClose in alarm/
open in alarm
F Summary of
alarm operations
Parameters