64
Alarm Hysteresis
Section 4-2
4-2-3
Close in Alarm/Open in Alarm
• When “close in alarm” is set, the status of the alarm output function will be
output as is. When “open in alarm” is set, the status of the alarm output
function will be reversed before being output.
• Close in alarm/open in alarm can be set separately for each alarm.
• Close in alarm/open in alarm is set in the “alarm 1 open in alarm” to
“alarm 3 open in alarm” parameters (advanced function setting level).
• The default is
n-o
(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 are also
set to “open in alarm.”
• The alarm outputs will turn OFF (i.e., the relay contacts will open) when
power is interrupted and for about two seconds after the power is turned
ON regardless of the close in alarm/open in alarm setting.
Summary of Alarm
Operation
The following figure summarizes the operation of alarms when the alarm type
is set to “lower-limit alarm with standby sequence” and “close in alarm” is set.
Parameters
Note
* =
1
to
3
Setting
Alarm output function
Alarm output
Alarm indicator
Close in alarm
ON
ON
Lit
OFF
OFF
Not lit
Open in alarm
ON
OFF
Lit
OFF
ON
Not lit
OFF
ON
PV
Alarm type: Lower-limit alarm with standby sequence
Alarm value
Alarm hysteresis
Time
Standby sequence
canceled
Alarm
Output
OFF (open)
ON (closed)
Symbol
Parameter: Level
Description
alh
*
rest
al
*
n
Alarm 1 to 3 hysteresis: Advanced function setting
level
Standby sequence: Advanced function setting level
Alarm 1 to 3 open in alarm: Advanced function setting
level
Alarm
Alarm
Alarm
Содержание E5AZ
Страница 2: ...E5CZ E5CZ U E5AZ E5EZ Digital Temperature Controller User s Manual Produced September 2008 ...
Страница 3: ...iv ...
Страница 23: ...xxiv ...
Страница 53: ...30 Using the Support Software Port Section 2 3 ...
Страница 79: ...56 Using HB and HS Alarms Section 3 10 ...
Страница 115: ...92 Output Adjustment Functions Section 4 14 ...
Страница 173: ...150 Communications Setting Level Section 5 8 ...
Страница 205: ...182 Index precautions 22 terminal arrangement 21 terminals 21 ...