Omron E5AZ User Manual

57
Alarm Hysteresis Section 4-2
4-2-3 Close in Alarm/Open in Alarm
• When the E5AZ/E5EZ 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.
• 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 3 open in alarm”
parameters (advanced function setting level). Default is “n-o: close in
alarm”.
• 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
Summary of alarm
operations
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
E5AZ/E5EZ is set to “close in alarm”).
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.”
4-2-4 Alarm Delays
• When "alarm type" is not set to "0: alarm function OFF", then alarm ON/
OFF delays can be set independently.
• Using the "alarm 1 to 3 ON/OFF delay" parameter (advanced function set-
ting level), users can set alarm delay times independently. The default is
"0: alarm no delay".
Alarm Output Function Output Alarm LCD
Close in
alarm
ON ON Lit
OFF OFF Out
Open in
alarm
ON OFF Lit
OFF ON Out
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

Omron E5AZ Specifications

General

Brand	Omron
Model	E5AZ
Category	Temperature Controller
Language	English