When X is positive When X is negative
0 Alarm function OFF Output OFF
1
*1
Upper- and lower-limit (deviation)
*2
2 Upper-limit (deviation)
3 Lower-limit (deviation)
4
*1
Upper- and lower-limit range
(deviation)
*3
5
*1
Upper- and lower-limit with standby
sequence (deviation)
*4
6 Upper-limit with standby sequence
(deviation)
7 Lower-limit with standby sequence
(deviation)
8 Absolute-value upper-limit
9 Absolute-value lower-limit
10 Absolute-value upper-limit with
standby sequence
11 Absolute-value lower-limit with
standby sequence
*1: With set values 1, 4 and 5, the upper and lower limit values
can be set independently for each alarm type and are expressed
as “L” and “H.”
Following operations are for cases when an alarm set point is “X”
or negative.
*2: Set value: 1, upper- and lower-limit alarm
Case 1 Case 2 Case 3 (Always ON)
*3: Set value: 4, upper- and lower-limit range
Case 1 Case 2 Case 3 (Always OFF)
*4: Set value: 5, upper- and lower-limit with standby sequence
Case 1 Case 2
Same as for the upper- and lower-limit
alarm. However, when the upper limit
and lower limit hysteresis overlaps:
Always OFF
Example
Example: When the alarm is set ON at 110
C/
F or higher.
•
When an alarm type
other than the absolute-
value alarm is selected
(For alarm types 1 to 7)
The alarm value is set as a
deviation from the set point.
•
When the absolute-
value alarm is selected
(For alarm types 8 to 11)
The alarm value is set as an
absolute value from the alarm
value of 0
C/F.
Alarm value
Set point
100
°
C/
°
F
Alarm value
0
°
C/
°
F
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