Omron E5EK, User Manual

Page: 46 / 203

CHAPTER 3 BASIC OPERATION
E5EK
3--10
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 combina-
tion of the “alarm type”, “alarm value” and “alarm hysteresis” pa-
rameter settings.
•
The contact conditions for 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 E5EK-T
controller 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 stand-
by sequence
(deviation)
ON
OFF
X
SP
ON
OFF
X
SP
7
Lower-limit alarm with stand-
by 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). Default 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 posi-
tive or negative.
•
Alarm values are built into the program and are set for each pattern.
For details, see 3.5 Setting Patterns” (page 3-14).
J
Alarm type
J
Alarm value