Alarm Type - Omron E5EC Datasheet

Alarm type

Each alarm can be independently set to one of the following 19 alarm types. The default is 2: Upper limit. (see note.)
Auxiliary outputs are allocated for alarms. ON delays and OFF delays (0 to 999 s) can also be specified.
Note: In the default settings for models with HB or HS alarms, alarm 1 is set to a heater alarm (HA) and the Alarm Type 1 parameter is not displayed.
To use alarm 1, set the output assignment to alarm 1.
Set
Alarm type
value
0 Alarm function OFF
1 Upper- and lower-limit *1
2
Upper-limit
(default)
3 Lower-limit
Upper- and lower-limit
4
range *1
Upper- and lower-limit
5
with standby sequence *1
Upper-limit with standby
6
sequence
Lower-limit with standby
7
sequence
Absolute-value upper-lim-
8
it
9 Absolute-value lower-limit
Absolute-value upper-lim-
10
it with standby sequence
Absolute-value lower-limit
11
with standby sequence
12 LBA (alarm 1 type only)
13 PV change rate alarm
SP absolute-value
14
upper-limit alarm
SP absolute-value
15
lower-limit alarm
MV absolute-value
16
upper-limit alarm *9
MV absolute-value
17
lower-limit alarm *9
RSP absolute-value
18
upper-limit alarm *10
RSP absolute-value
19
lower-limit alarm *10
Alarm output operation
When alarm value X When alarm value X
is positive is negative
Output OFF
L H
ON
*2
OFF PV
SP
X
ON ON
OFF PV OFF
SP
X
ON ON
OFF PV OFF
SP
L H
ON
*3
OFF PV
SP
L H
ON
*4
OFF PV
*5
SP
X
ON ON
OFF PV
OFF
SP
X
ON ON
OFF
OFF PV
SP
X
ON
ON
OFF PV OFF
0
X
ON ON
OFF PV OFF
0
X
ON ON
OFF PV OFF
0
X
ON ON
OFF PV OFF
0
-
-
X
ON ON
OFF SP OFF
0
X
ON ON
OFF
OFF SP
0
Standard Control Standard Control
X
ON
ON
OFF MV
OFF
0
Heating/Cooling
Heating/Cooling
Control (Heating MV)
Control (Heating MV)
X
ON
OFF MV Always ON
0
Standard Control Standard Control
X
ON
ON
OFF MV OFF
0
Heating/Cooling
Heating/Cooling
Control (Cooling MV)
Control (Cooling MV)
X
ON
OFF MV Always ON
0
X
ON
ON
OFF
OFF RSP
0
X
ON ON
OFF RSP OFF
0
Description of function
No alarm
Set the upward deviation in the set point for the alarm upper
limit (H) and the lower deviation in the set point for the alarm
lower limit (L). The alarm is ON when the PV is outside this
deviation range.
Set the upward deviation in the set point by setting the alarm
X
value (X). The alarm is ON when the PV is higher than the
PV
SP
SP by the deviation or more.
Set the downward deviation in the set point by setting the
X
alarm value (X). The alarm is ON when the PV is lower than
PV
SP
the SP by the deviation or more.
Set the upward deviation in the set point for the alarm upper
limit (H) and the lower deviation in the set point for the alarm
lower limit (L). The alarm is ON when the PV is inside this de-
viation range.
A standby sequence is added to the upper- and lower-limit
alarm (1). *6
X
A standby sequence is added to the upper-limit alarm (2). *6
PV
SP
X
A standby sequence is added to the lower-limit alarm (3). *6
PV
SP
X
The alarm will turn ON if the process value is larger than the
PV alarm value (X) regardless of the set point.
0
X
The alarm will turn ON if the process value is smaller than the
PV alarm value (X) regardless of the set point.
0
X
A standby sequence is added to the absolute-value upper-
PV limit alarm (8). *6
0
X A standby sequence is added to the absolute-value lower-
PV
limit alarm (9). *6
0
*7
*8
X This alarm type turns ON the alarm when the set point (SP)
SP
is higher than the alarm value (X).
0
X This alarm type turns ON the alarm when the set point (SP)
SP
is lower than the alarm value (X).
0
X
MV
0
This alarm type turns ON the alarm when the manipulated
variable (MV) is higher than the alarm value (X).
X
MV
0
This alarm type turns ON the alarm when the manipulated
variable (MV) is lower than the alarm value (X).
X
This alarm type turns ON the alarm when the remote SP
RSP
(RSP) is higher than the alarm value (X).
0
X
This alarm type turns ON the alarm when the remote SP
RSP (RSP) is lower than the alarm value (X).
0
E5EC/E5AC
21