red lion PXU10020, Instructions Manual

Page: 26 / 47

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Drawing No. LP0932 Released 2018-01-12
ALARM 2 ACTION
Select the action for the alarm. See Alarm Action Figures at the
beginning of this section for a visual explanation.
NON
AC2
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 1.
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 off until the trigger point is
crossed again.
nor
Normal
rv
Reverse
Auo
Automatic
LA
Latched
ALARM 1 ACTION
Select the action for the alarm. See Alarm Action Figures at the
beginning of this section for a visual explanation.
NON
AC1
nor
Li1
Auo
r1
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 may
also 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.
Y
Standby on
NO
Standby off
-99.9
to
999.9
NO
b1
100.0
AL-1
INPUT FAIL ALARM 1 ACTION
OFF
IFA1
On OFF
Select the Alarm action in the event of a detected input failure (open
TC/RTD or shorted RTD).
Shaded parameters are programming/model dependent.
NON AbI AbLO AuI AuLO
d-I d-LO b-IN b-o Pr
C1 oLd rPuP rPdn run
PA oP nd
NON AbI AbLO AuI AuLO
d-I d-LO b-IN b-o Pr
C1 oLd rPuP rPdn run
PA oP nd
AVAILABLE ALARM ACTIONS
NON
None
No action, the remaining Alarm parameters
are not available.
AbI
Absolute High
(balanced hysteresis)
The alarm energizes when the Process
Value exceeds the alarm value + 1/2 the
hysteresis value.
AbLO
Absolute Low
(balanced hysteresis)
The alarm energizes when the Process
Value falls below the alarm value -1/2 the
hysteresis value.
AuI
Absolute High
(unbalanced hysteresis)
The alarm energizes when the Process
Value exceeds the alarm value.
AuLO
Absolute Low
(unbalanced hysteresis)
The alarm energizes when the Process
Value falls below the alarm value.
d-I Deviation High The alarm value tracks the Setpoint value
d-LO
Deviation Low The alarm value tracks the Setpoint value
b-IN
Band Acting (inside) The alarm value tracks the Setpoint value
b-o
Band Acting (outside) The alarm value tracks the Setpoint value
Pr
Profile Error Band Timeout
The alarm energizes when the process
remains outside the error band longer than
the allowable time.
C1
Current Break
The alarm energizes when insufficient
current is detected while the corresponding
control output activated.
oLd
Profile Holding
The alarm energizes when the controller is
in a Hold Phase.
rPuP
Ramping Up to Setpoint
The alarm energizes when the controller is
ramping up to setpoint.
rPdn
Ramping Down to Setpoint The alarm energizes when the controller is
ramping down to setpoint.
run
Controller Running
The alarm energizes when the controller
profile is running.
PA
Controller Paused
The alarm energizes when the controller
profile is paused.
oP
Controller Stopped
The alarm energizes when the controller
profile is stopped.
nd
Profile Ended
The alarm energizes when the controller
profile is ended.
MINIMUM CURRENT ALARM 1
O.0
AL1L
0.0
to
999.9
Enter the minimum acceptable current level at Ct1
MAXIMUM CURRENT ALARM 1
O.0
AL1
0.0
to
999.9
Enter the maximum acceptable current level at
C1
The remaining Alarm 1 settings are not available when
AC1
=
C1
The next two parameter settings are only available when
AC1
=
C1
.