Lit1, Lit3 – Red Lion PXU User Manual
Page 18
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ALARM 2 STANDBY
Standby on
Standby off
Standby prevents nuisance (typically low level) alarms after a power up.
After powering up the controller, the process must leave the alarm region (enter
normal non-alarm area of operation). After this has occurred, the standby is
disabled and the alarm responds normally until the next controller power up.
ALARM 2 ANNUNCIATOR
Normal
v
Reverse
With normal selection, the alarm annunciator indicates an “on” alarm output
2. With reverse selection, the alarm annunciator indicates an “off” alarm output.
ALARM 2 RESET MODE
Automatic
Latched
In Automatic mode, an energized alarm turns off automatically after the
Temperature/Process value leaves the alarm region. In Latched mode, an
energized alarm requires an 1 / 2 key or user input alarm reset to turn off.
After an alarm reset, the alarm remains reset off until the trigger point is crossed
again.
ALARM 2 VALUE
The alarm values are entered as process units or degrees. They can also be
entered in the Parameter or Hidden Loops. When the alarm is configured as
deviation or band acting, the associated output tracks the Setpoint as it is
changed. The value entered is the offset or difference from the Setpoint.
to
ALARM 2 ACTION
Select the action for the alarm. See Alarm Action Figures at the beginning of
this section for a visual explanation.
NONE AbHI
AbLO
AuHI
AuLO
d-HI
d-LO
b-IN
b-ot
C
b
INPUT FAIL ALARM 2 ACTION
I
ALARM 1 ANNUNCIATOR
With normal selection, the alarm annunciator indicates an “on” alarm output
1. With reverse selection, the alarm annunciator indicates an “off” alarm output.
ALARM 1 RESET MODE
In Automatic mode, an energized alarm turns off automatically after the
Temperature/Process value leaves the alarm region. In Latched mode, an
energized alarm requires an 1 / 2 key or user input alarm reset to turn off. After
an alarm reset, the alarm remains reset off until the trigger point is crossed again.
Normal
v
Reverse
Automatic
Latched
ALARM 1 ACTION
Select the action for the alarm. See Alarm Action Figures at the beginning of
this section for a visual explanation.
b-ot
b-IN
d-LO
d-HI
AuLO
AuHI
AbLO
AbHI
NONE
C
Lit1
ALARM 1 STANDBY
Standby prevents nuisance (typically low level) alarms after a power up.
After powering up the controller, the process must leave the alarm region (enter
normal non-alarm area of operation). After this has occurred, the standby is
disabled and the alarm responds normally until the next controller power up.
ALARM 1 VALUE
The alarm values are entered as process units or degrees. They can be entered
in the Parameter or Hidden Loops, when enabled in
3-LC
. When the alarm is
configured as deviation or band acting, the associated output tracks the Setpoint
as it is changed. The value entered is the offset or difference from the Setpoint
at which the alarm condition will occur.
Standby on
Standby off
to
b
INPUT FAIL ALARM 1 ACTION
I
ALARM 3 ANNUNCIATOR
With normal selection, the alarm annunciator indicates an “on” alarm output
3. With reverse selection, the alarm annunciator indicates an “off” alarm output.
Normal
v
Reverse
ALARM 3 ACTION
Select the action for the alarm. See Alarm Action Figures at the beginning of
this section for a visual explanation.
b-ot
b-IN
d-LO
d-HI
AuLO
AuHI
AbLO
AbHI
NONE
C3
Lit3
Alarm 3 parameters in this module are programming dependent. They are
available only when Output 2 control action is programmed as alarm.
Select the Alarm action in the event of a detected input failure (open TC/RTD
or shorted RTD).
Select the Alarm action in the event of a detected input failure (open TC/RTD
or shorted RTD).
Shaded parameters are programming/model dependent.