Dwyer 8B - Manual (Page 23)

Page 23
Alarm Output Configuration and Operation Table.
Alarm Type
Alarm function disabled
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).
Deviation upper-limit:
This alarm output operates when PV value is higher than
the setting value SV+(AL-H).
Deviation lower-limit:
This alarm output operates when PV value is lower than
the setting value SV-(AL-L).
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).
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.
Absolute value upper-limit:
This alarm output operates when PV value is higher than
the setting value AL-H.
Absolute value lower-limit:
This alarm output operates when PV value is lower than
the setting value AL-L.
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).
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).
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).
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).
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).
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).
When program control is end status, alarm output is ON.
When RAMP UP status happens to PID program control,
alarm output is ON.
When RAMP DOWN status happens to PID program
control, alarm output is ON.
When SOAK status happens to PID program control, alarm
output is ON.
When RUN status happens to PID program control, alarm
output is ON. Set Value
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Alarm Output Operating
Output is OFF
(Note: AL-H and AL-L include AL1H, AL2H, AL3H and AL1L, AL2L, AL3L)