12.1 Alarm Mode
ALD
X
Alarm mode
Description
Boot completed, the alarm is OFF, when PV≥SV start the timer,
alarm is turned ON and the control function keep ON in timed out.
If the RAMP function is used, even if the RAMP SV has not
19
SOAK_B
reached the target SV, the timer will start counting as long as the
condition PV≥target SV is met.
*
Please refer to Chapter 11.7
*
This mode only available in ALD1 or ALD2
*
In this mode, the time format is fixed to “hour.minute”
12.2 Alarm Special Setting
SETA.1
SETA.2
SETA.3
SETA.4
0
：
Alarm 1 relay reverse active disable (Normal Open)
1
：
Alarm 1 relay reverse active enable (Normal Close)
0
：
Alarm 2 relay reverse active disable (Normal Open)
1
：
Alarm 2 relay reverse active enable (Normal Close)
0
：
Alarm 3 relay reverse active disable (Normal Open)
1
：
Alarm 3 relay reverse active enable (Normal Close)
0
：
When ALDX=17
，
Program execution Alarm action
1
：
When ALDX=17
，
Program end Alarm action
12.3
Alarm Example
Example 1 : Deviation low, the difference between With alarm hold action and without alarm hold action, shown in the diagram below
With alarm hold action (ALDX=06)
without alarm hold action (ALDX=16)
temperature
temperature
PV
PV
Event set value
Event
Event set value
Event
area
area
time
time
With hold action
OFF
ON
ON
OFF
ON
FY/FU operation manual
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