E5EC
6
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.
*1 With set values 1, 4 and 5, the upper and lower limit values can be set
ndependently 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 Alarm Described Above *2
• Case 1 and 2
Always OFF
when the upper-limit and lower-limit hysteresis overlaps.
• Case 3: Always OFF
*5. Set value: 5, Upper- and lower-limit with standby sequence
Always OFF
when the upper-limit and lower-limit hysteresis overlaps.
*6. Refer to the E5CC/E5EC Digital Controllers User's Manual (Cat. No. H174)
for information on the operation of the standby sequence.
*7. Refer to the E5CC/E5EC Digital Controllers User's Manual (Cat. No. H174)
for information on the PV change rate alarm.
*8. Refer to the E5CC/E5EC Digital Controllers User's Manual (Cat. No. H174)
for information on the PV change rate alarm.
*9. When heating/cooling control is performed, the MV absolute upper limit
alarm functions only for the heating operation and the MV absolute lower
limit alarm functions only for the cooling operation.
*10. This value is displayed only when a remote SP input is used. It functions in
both Local SP Mode and Remote SP Mode.
Set
value
Alarm type
Alarm output operation
Description of function
When alarm value
X is positive
When alarm value
X is negative
0Alarm function OFF Output OFF No alarm
1 Upper- and lower-limit *1
*2
Set the deviation in the set point by setting the alarm upper
limit (H) and alarm lower limit (L). The alarm is ON when the
PV is outside this deviation range.
2 Upper-limit
Set the upward deviation in the set point by setting the alarm
value (X). The alarm is ON when the PV is higher than the SP
by the deviation or more.
3 Lower-limit
Set the downward deviation in the set point by setting the
alarm value (X). The alarm is ON when the PV is lower than
the SP by the deviation or more.
4
Upper- and lower-limit
range *1
*3
Set the deviation in the set point by setting the alarm upper
limit (H) and alarm lower limit (L).
The alarm is ON when the PV is inside this deviation range.
5
Upper- and lower-limit with
standby sequence *1
*4
A standby sequence is added to the upper- and lower-limit
alarm (1).*6
6
Upper-limit with standby
sequence
A standby sequence is added to the upper-limit alarm (2). *6
7
Lower-limit with standby
sequence
A standby sequence is added to the lower-limit alarm (3).*6
8 Absolute-value upper-limit
The alarm will turn ON if the process value is larger than the
alarm value (X) regardless of the set point.
9 Absolute-value lower-limit
The alarm will turn ON if the process value is smaller than the
alarm value (X) regardless of the set point.
10
Absolute-value upper-limit
with standby sequence
A standby sequence is added to the absolute-value upper-
limit alarm (8). *6
11
Absolute-value lower-limit
with standby sequence
A standby sequence is added to the absolute-value lower-limit
alarm (9). *6
12
LBA (alarm 1 type only)
-*7
13 PV change rate alarm - *8
14
SP absolute value
upper limit
This alarm type turns ON the alarm when the set point (SP) is
higher than the alarm value (X).
15
SP absolute value
lower limit
This alarm type turns ON the alarm when the set point (SP) is
smaller than the alarm value (X).
16
MV absolute value
upper limit *9
This alarm type turns ON the alarm when the manipulated
variable (MV) is higher than the alarm value (X).
17
MV absolute value
lower limit *9
This alarm type turns ON the alarm when the manipulated
variable (MV) is smaller than the alarm value (X).
18
RSP absolute value
upper limit *10
The alarm will turn ON when the remote SP (RSP) is larger
than the alarm value (X).
19
RSP absolute value
lower limit *10
The alarm will turn ON when the remote SP (RSP) is smaller
than the alarm value (X).
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