Alarm Type - Omron E5ZN Series Manual

Alarm Type

Alarms 1 and 2
Set Alarm type
value
When alarm value X is
positive
0 No alarm
1 Upper and
ON
lower limits
(See note 1.)
OFF
2 Upper limit
ON
OFF
3 Lower limit
ON
OFF
4 Upper and
lower limits of
ON
range (See
OFF
note 1.)
5 Upper- and
lower-limit
alarm with
ON
standby se-
OFF
quence (See
notes 1 and 6.) (See note 5.)
6 Upper-limit
alarm with
standby se- ON
quence (See
OFF
note 6.)
7 Lower-limit
alarm with
ON
standby se-
OFF
quence
8 Absolute-val-
ON
ue upper limit
OFF
0
9 Absolute-val-
ON
ue lower limit
OFF
0
10 Absolute-val-
ue upper limit
ON
with standby
sequence
OFF
0
(See note 6.)
11 Absolute-val-
ue lower limit
ON
with standby
sequence OFF
0
(See note 6.)
Note: 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."
2. Set value: 1, Upper- and lower-limit alarm
Case 1 Case 2
L H SP SP L
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 < 0, L > 0 H > 0, L < 0
Alarm output
When alarm value X is
negative
Output OFF
(See note 2.)
L H
SP
X
X
ON
OFF
SP
SP
X
X
ON
OFF
SP
SP
(See note 3.)
L H
SP
(See note 4.)
L H
SP
X
X
ON
OFF
SP
SP
X
X
ON
OFF
SP
SP
X
X
ON
OFF
0
X
X
ON
OFF
0
X
X
ON
OFF
0
X
X
ON
OFF
0
Case 3 (Always ON)
H < 0, L < 0
H H SP L
H < 0, L > 0
H ≥ L
H L SP
H > 0, L < 0
H ≤ L
SPLH
Case 3 (Always ON)
H < 0, L < 0
H H SP L
H < 0, L > 0
H ≥ L
H L SP
H > 0, L < 0
H ≤ L
SP H L
4. Set value: 5, Upper- and lower-limit with standby sequence
For upper- and lower-limit alarms in the above diagrams, the
alarm is always OFF in cases 1 and 2 if the hysteresis for
the upper and lower limits overlaps, and the alarm is always
OFF for case 3.
5. Set value: 5, Upper- and lower-limit with standby sequence
alarm.
Alarm is always OFF when the upper-limit and lower-limit
hysteresis overlaps.
6. Refer to Alarm Hysteresis for information on standby
sequences.
Alarm 3
Set Alarm type
value
When alarm value X is
positive
0 No alarm
1 Upper and
ON
lower limits
OFF
2 Upper limit
ON
OFF
3 Lower limit
ON
OFF
4 Upper and
ON
lower limits of
range
OFF
5 Upper- and
lower-limit
ON
alarm with
standby se-
OFF
quence
6 Upper-limit
alarm with
ON
standby se-
OFF
quence
7 Lower-limit
alarm with
ON
standby se-
OFF
quence
8 Absolute-val-
ON
ue upper limit
OFF
0
9 Absolute-val-
ON
ue lower limit
OFF
0
10 Absolute-val-
ue upper limit
ON
with standby
OFF
0
sequence
11 Absolute-val-
ue lower limit
ON
with standby
OFF
0
sequence
Note: If the alarm type is set to value from 1 to 7, set the alarm value
as the deviation from the SP.
Use host communications or the E5ZN-SDL Setting Display Unit to
set the alarm type separately for each alarm for alarms 1 to 3. The
default settings are for an upper-limit alarm (set value: 2). Set the
alarms separately for each channel.
Alarm output
When alarm value X is
negative
Output OFF
Always ON
X X
SP
X
X
ON
OFF
SP
SP
X
X
ON
OFF
SP
SP
Always OFF
X X
SP
Always OFF
X X
SP
X
X
ON
OFF
SP
SP
X X
ON
OFF
SP
SP
X X
ON
OFF
0
X
X
ON
OFF
0
X
X
ON
OFF
0
X
X
ON
OFF
0
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