6
8 Alarm Outputs
There are up to three groups of alarm outputs and each group allows thirteen alarm types in the initial setting mode. The alarm output is
activated whenever the process temperature value (PV) is getting higher or lower than the set point of alarm limit.
Set
Value
Alarm Type Alarm Output Operation
0 Alarm function disabled Output is OFF
1 Deviation upper- and lower-limit:
This alarm output operates when PV value is higher than the setting value SV+(AL-H) or lower than the
setting value SV-(AL-L).
ON
OFF
SV-(AL-L)
SV
SV+(AL-H)
2 Deviation upper-limit:
This alarm output operates when PV value is higher than the setting value SV+(AL-H).
ON
OFF
SV
SV+(AL-H)
3 Deviation lower-limit:
This alarm output operates when PV value is lower than the setting value SV-(AL-L).
ON
OFF
SV
SV-(AL-L)
4 Reverse deviation upper- and lower-limit:
This alarm output operates when PV value is in the range of the setting value SV+(AL-H) and the setting
value SV-(AL-L).
ON
OFF
SV
SV-(AL-L)
SV+(AL-H)
5 Absolute value upper- and lower-limit:
This alarm output operates when PV value is higher than the setting value AL-H or lower than the setting
value AL-L.
ON
OFF
AL-L
AL-H
6 Absolute value upper-limit:
This alarm output operates when PV value is higher than the setting value AL-H.
ON
OFF
L-H
7 Absolute value lower-limit:
This alarm output operates when PV value is lower than the setting value AL-L.
ON
OFF
AL-L
8 Deviation upper- and lower-limit with standby sequence:
This alarm output operates when PV value reaches set point (SV value) and the value is higher than the
setting value SV+(AL-H) or lower than the setting value SV-(AL-L).
ON
OFF
SV
SV-(AL-L) SV+(AL-H)
9 Deviation upper-limit with standby sequence:
This alarm output operates when PV value reaches set point (SV value) and the reached value is higher
than the setting value SV+(AL-H).
SV+(AL-H)
ON
OFF
SV
10 Deviation lower-limit with standby sequence: this alarm output operates when PV value reaches the set
point (SV value) and the reached value is lower than the setting value SV-(AL-L).
SV-(AL-L)
ON
OFF
SV
11 Hysteresis upper-limit alarm output:
This alarm output operates if PV value is higher than the setting value SV+(AL-H). This alarm output is
OFF when PV value is lower than the setting value SV+(AL-L).
ON
OFF
AL-L
AL-H
12 Hysteresis lower-limit alarm output:
This alarm output operates if PV value is lower than the setting value SV-(AL-H). This alarm output is OFF
when PV value is higher than the setting value SV-(AL-L).
ON
OFF
AL-H
AL-L
13 CT alarm output:
This alarm operates when the current measured by transformer (CT) is lower than AL-L or higher than
AL-H (This alarm output is available only for the controller with current transformer).
ON
OFF
AL-L
SV
AL-H
14
When program control is end status, alarm output is ON.
15
When RAMP UP status happens to PID program control, alarm output is ON.
16
When RAMP DOWN status happens to PID program control, alarm output is ON.
17
When SOAK status happens to PID program control, alarm output is ON.
18
When RUN status happens to PID program control, alarm output is ON.
Note: AL-H and AL-L include AL1H, AL2H, AL3H and AL1L, AL2L, AL3L
(11 pages)
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