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■ Alarm Types
• The conditions of alarm output are jointly determined by Alarm Type and Alarm Hysteresis.
• Below is an explanation of the alarm type, alarm value, upper alarm limit, and lower alarm limit parameters.
alt1
Alarm1
Type 2
2
l.ini
Set
Type
values
0
Alarm function OFF
1
Upper-and lower-limits
See note 1.
2
Upper limits
3
Lower limits
4
Upper-and lower-limits
See note 1.
5
Upper-and lower-limit with standby sequence
See note 1.
Upper-limit with standby sequence
6
Lower-limit with standby sequence
7
8
Absolute-value upper-limits
Absolute-value lower-limits
9
Absolute-value upper-limit with standby sequence
10
Absolute-value lower-limit with standby sequence
11
Note:1. Upper and lower limits can be set independently for each alarm point, represented by L
and H. The set values are 1, 4, and 5.
2. Set value: 1, Upper-and lower-limit
Case 1
Case 2
L H SP
SP L H
H< 0.L >0
H> 0.L <0
|H| < |L|
|H| > |L|
3. Set value: 4, Upper-and lower-limit range
Case 1
Case 2
L H SP
SP L H
H< 0.L >0
H> 0.L <0
|H| < |L|
|H| > |L|
4. Set value: 5, Upper-and lower-limit with standby sequence
*for the upper and lower alarm limits above
- In case 1 and 2, if there are any overlaps in the upper and lower limits for hysteresis,
the alarm will always be OFF.
Example of case 1 and case 2: in case 3, the alarm will always be OFF.
5. Set value: 5, Upper-and lower-limit with standby sequence
If there are any overlaps in the upper and lower limits for hysteresis, the alarm will always
be OFF.
There are alarm types 1 to 2 (initial setting level), and settings should be made
independently for each alarm.
The initial value is 2: upper limit.
Digital Position-Proportional Controllers
Alarm output operation
When X is positive
Output OFF
L H
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
SP
L H
ON
OFF
SP
L H
ON
OFF
SP
(See note 5)
X
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
0
X
ON
OFF
0
X
ON
OFF
0
X
ON
OFF
0
Case 3 (Always ON)
L
SP H
H
LSP
SP H L
Case 3 (Always OFF)
H< 0.L <0
L SP H
H L SP
SP H L
E5EZ-PRR
When X is negative
See note 2.
X
ON
OFF
SP
X
ON
OFF
SP
See note 3.
See note 4.
X
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
0
X
ON
OFF
0
X
ON
OFF
0
X
ON
OFF
0
41
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