PLATINUM
TM
Series Controllers User
’s
Guide
M5451
Omega Engineering | www.omega.com
49
Reference Section: Programming Mode (PRoG)
7.3
Alarm Mode Configuration (PRoG > ALM.1, ALM.2)
Select Alarm Configuration 1 (
ALM.1
) or Alarm Configuration 2
(ALM.2)
in order to set up,
change, enable, or disable Alarms. Either or both Alarms can be assigned to trigger display
color changes, annunciators, and / or outputs. Either or both Alarm configurations can be
assigned to multiple outputs. The
ALM.1
and
ALM.2
configuration menus have all of the
same settings and function in the same manner.
Navigate to the Alarm setting to change. Settings include the following:
tyPE
–
Alarm type absolute or deviation
Ab.dV
–
Alarm references values (
ALR.H
and
ALR.L
) or deviation from
SP1
or
SP2
ALR.H
–
Alarm high parameter, used for Alarm trigger calculations
ALR.L
–
Alarm low parameter, used for Alarm trigger calculations
A.CLR
–
Alarm color indication
HI.HI
–
High High / Low Low offset value
LtCH
–
Alarm latching
CtCL
–
Alarm action (normally open or normally closed)
A.P.oN
–
Alarm power-on behavior
dE.oN
–
Time delay for Alarm trigger unless the condition persists, default = 1.0 s
dE.oF
–
Time delay for cancelling Alarms after being triggered; prevents Alarm
“chatter,” default = 0.0 s
Select the indicated setting.
7.3.1
Alarm Type (PRoG > ALM.1, ALM.2 > tyPE)
Select the Alarm Type (
tyPE
) parameter. This parameter will control the basic behavior of the
selected alarm.
Navigate to the desired setting. Settings include the following:
oFF
–
Alarm is off (factory default)
AboV
–
Alarm is triggered when the process value exceeds
ALR.H
(Absolute Mode)
or the specified Setpoint plus
ALR.H
(Deviation Mode)
bELo
–
Alarm is triggered when the process value is less than
ALR.L
(Absolute
Mode) or the specified Setpoint minus
ALR.L
(Deviation Mode)
HI.Lo.
–
Alarm is triggered when the process value is outside the
ALR.L
–
ALR.H
range
(Absolute Mode) or the range defined by the band around the specified Setpoint as
determined by
ALR.L
and
ALR.H
(Deviation Mode)
bANd
–
Alarm is triggered when the process value is within the
ALR.L
–
ALR.H
range
(Absolute Mode) or within the band around the specified Setpoint as determined by
ALR.L
and
ALR.H
(Deviation Mode)
Note:
Table 5.1 compares the Alarm range options, and Figure 5.1 represents the Alarm range
options graphically.
Select the indicated setting.
