Red Lion PAX2C - Manual (Page 37)

37
a
larm
p
arameTers
(ALn)
Alarm
Assignment
Alarm
Action
Alarm
Value
Alarm
Band/Deviation
Value
Alarm
Hysteresis
Value
On Time
Delay
Off Time
Delay
Alarm
Logic
F1 F2
P
D
Pro
N O
Pro
A L r
SLCt
A L n
ASGN
An
N O N E
ACtN
An
N O
ALr
An
0 . 0
°F
bdEU
dn
0 . O
°F
HYSt
An
0 . 2
°F
tON
An
0 . 0
SEC
tOFF
An
0 . O
SEC
LGIC
An
n o r
Reset
Action
rSEt
An
A u t o
Standby
Operation
StbY
An
N O
Probe
Burn-out
Action
IFLt
An
O F F
ALARM ASSIGNMENT
NONE PU
Selects the parameter to be used to trigger the Alarm.
NONE = No Alarm Assignment (alarm disabled)
PU = Input Process Value
ALARM ACTION
NO AbHI AbLO AUHI AULO
dEHI dELO bANd bdIn
Enter the action for the selected alarm. See Alarm Figures for a
visual detail of each action.
NO = No Alarm Action
AbHI = Absolute high, with balanced hysteresis
AbLO = Absolute low, with balanced hysteresis
AUHI = Absolute high, with unbalanced hysteresis
AULO = Absolute low, with unbalanced hysteresis
dEHI = deviation high, with unbalanced hysteresis
dELO = deviation low, with unbalanced hysteresis
bANd = Outside band, with unbalanced hysteresis
bdIn = Inside band, with unbalanced hysteresis
ASGN
An
NONE
ACtN
An
NO
Setpoint Alarm Figures
With reverse logic
rEv
, the below alarm states are opposite.
ALARM
STATE
OFF
ON
Hys
AL + Hys
AL
OFF
TRIGGER POINTS
ALARM
STATE
OFF
ON
Hys
AL- Bnd
AL
OFF
AL + Bnd
ON
OFF
Hys
TRIGGER POINTS
Absolute Low Acting (Unbalanced Hys) = AULO
Band Outside Acting = bANd
ALARM
STATE
OFF
ON
Hys
AL + ½Hys
AL
AL - ½Hys
OFF
TRIGGER POINTS
ALARM
STATE
OFF
ON
Hys
AL + Dev
AL
OFF
TRIGGER POINTS
ALARM
STATE
ON OFF
Hys
AL - Bnd
AL
ON
AL + Bnd
OFF ON
Hys
TRIGGER POINTS
Absolute Low Acting (Balanced Hys) = AbLO Deviation High Acting (Dev > 0) = dEHI
Band Inside Acting = bdIn
ALARM
STATE
OFF ON
Hys
AL
AL - Hys
OFF
TRIGGER POINTS
ALARM
STATE
OFF
ON
Hys
AL - Dev
AL
OFF
TRIGGER POINTS
ALARM
STATE ON OFF
Hys
AL + (-Dev)
AL
ON
TRIGGER POINTS
Absolute High Acting (Unbalanced Hys) = AUHI Deviation Low Acting (Dev > 0) = dELO
Deviation High Acting (Dev < 0) = dEHI
ALARM
STATE
OFF
ON
Hys
AL + ½Hys
AL
AL - ½Hys
OFF
TRIGGER POINTS
Absolute High Acting (Balanced Hys) = AbHI
Please see the Digital Output Parameter’s Configuration area for
more information about mapping an alarm to a digital output.