13
Alarm Type
Alarms 1 and 2
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
3.
Set value: 4, Upper- and lower-limit range
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
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.
Set
value
Alarm type
Alarm output
When alarm value X is
positive
When alarm value X is
negative
0
No alarm
Output OFF
1
Upper and
lower limits
(See note 1.)
(See note 2.)
2
Upper limit
3
Lower limit
4
Upper and
lower limits of
range (See
note 1.)
(See note 3.)
5
Upper- and
lower-limit
alarm with
standby se-
quence (See
notes 1 and 6.) (See note 5.)
(See note 4.)
6
Upper-limit
alarm with
standby se-
quence (See
note 6.)
7
Lower-limit
alarm with
standby se-
quence
8
Absolute-val-
ue upper limit
9
Absolute-val-
ue lower limit
10
Absolute-val-
ue upper limit
with standby
sequence
(See note 6.)
11
Absolute-val-
ue lower limit
with standby
sequence
(See note 6.)
L
ON
OFF
H
SP
ON
OFF
X
SP
X
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
SP
L
ON
OFF
H
SP
L
ON
OFF
H
SP
ON
OFF
X
SP
X
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
SP
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
L
H SP
L
H
SP
L
H
SP
L
H
SP
SPLH
Case 1
Case 2
Case 3 (Always ON)
H < 0, L < 0
H < 0, L > 0
H
<
L
H > 0, L < 0
H
>
L
H < 0, L > 0
H
≥
L
H > 0, L < 0
H
≤
L
L
H SP
L
H
SP
L
H SP
L
H
SP
L
H
SP
Case 1
Case 2
Case 3 (Always ON)
H < 0, L < 0
H < 0, L > 0
H > 0, L < 0
H < 0, L > 0
H
≥
L
H > 0, L < 0
H
≤
L
Set
value
Alarm type
Alarm output
When alarm value X is
positive
When alarm value X is
negative
0
No alarm
Output OFF
1
Upper and
lower limits
Always ON
2
Upper limit
3
Lower limit
4
Upper and
lower limits of
range
Always OFF
5
Upper- and
lower-limit
alarm with
standby se-
quence
Always OFF
6
Upper-limit
alarm with
standby se-
quence
7
Lower-limit
alarm with
standby se-
quence
8
Absolute-val-
ue upper limit
9
Absolute-val-
ue lower limit
10
Absolute-val-
ue upper limit
with standby
sequence
11
Absolute-val-
ue lower limit
with standby
sequence
X
ON
OFF
X
SP
ON
OFF
X
SP
X
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
X
SP
X
ON
OFF
X
SP
ON
OFF
X
SP
X
ON
OFF
SP
X
ON
OFF
SP
X
ON
OFF
SP
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
ON
OFF
X
0
