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3.4 Setting Alarm Type
E5CK
3--7
3.4 Setting Alarm Type
•
Three alarm outputs are supported: alarms 1 to 3. Of these, only the
alarm assigned as the output can be used.
•
Alarm output conditions are determined according to the combination
of the “alarm type”, “alarm value” and “alarm hysteresis” parameter
settings.
•
The contact conditions when alarm output is ON can be set to “open”
or “closed” in the “close in alarm/open in alarm” parameter.
•
The following table shows the alarm types supported by the E5CK con-
troller and their respective operations.
Alarm Type
Alarm Output Operation
Alarm Type
When X is positive
When X is negative
1
Upper-and lower-limit alarm
(deviation)
ON
OFF
X X
SP
Always ON
2
Upper-limit alarm (deviation)
ON
OFF
X
SP
ON
OFF
X
SP
3
Lower-limit alarm (deviation)
ON
OFF
X
SP
X
ON
OFF
SP
4
Upper-and lower-limit range
alarm (deviation)
ON
OFF
X X
SP
Always OFF
5
Upper-and lower-limit alarm
with standby sequence
(deviation)
ON
OFF
X X
SP
Always OFF
6
Upper-limit alarm with
standby sequence (deviation)
ON
OFF
X
SP
ON
OFF
X
SP
7
Lower-limit alarm with
standby sequence (deviation)
ON
OFF
X
SP
ON
OFF
X
SP
8
Absolute-value upper-limit
alarm
ON
OFF
X
0
ON
OFF
X
0
9
Absolute-value lower-limit
alarm
ON
OFF
X
0
ON
OFF
X
0
10
Absolute-value upper-limit
alarm with standby sequence
ON
OFF
X
0
ON
OFF
X
0
11
Absolute-value lower-limit
alarm with standby sequence
ON
OFF
X
0
ON
OFF
X
0
•
Alarm types are set independently for each alarm in the “alarm 1 to 3”
parameters (setup mode). Factory setting is “2: Upper-limit alarm (devi-
ation)”.
•
Alarm values are indicated by “X” in the table above. Alarm output
operation differs according to whether the value of the alarm is positive
or negative.
•
Alarm values are set independently for each alarm in the “alarm value
1 to 3” parameters (level 1 mode). Factory setting is “0”.
J
Alarm type
J
Alarm value