Thermcraft XST-6-0-36-3V - Manual (Page 111)

Installation and Operation Handbook Configuration
2408 and 2404 Controller 6-11
AL Alarm configuration Values
The controller contains four ‘soft’ alarms, which are
configured in this list. Once configured, they can be
attached to a physical output as described in the alarm
relay configuration list, ‘
AA Conf’.
AL1 Alarm 1 Type see Table A
Ltch Latching no/YES/Evnt/mAn *
bLoc Blocking no/YES
AL2 Alarm 2 Type see Table A
Ltch Latching no/YES/Evnt/mAn *
bLoc Blocking no/YES
AL3 Alarm 3 Type see Table A
Ltch Latching no/YES/Evnt/mAn *
bLoc Blocking no/YES
AL4 Alarm 4 Type see Table A
Ltch Latching no/YES/Evnt/mAn *
bLoc Blocking (not if ‘ AL4’ = ‘rAt’) no/YES
Sbr.t Sensor break trip alarm
latching type.
Disable = process alarms
inhibited when in sensor
break
Enable = process alarms
shown when in sensor
break
En Enable
Dis Disable
*
Alarm Modes
‘ no’ means that the alarm will be non-latching.
‘ YES’ means that the alarm will be latched, with automatic
resetting. Automatic resetting means that if a reset is actioned
before the alarm has cleared, then it will automatically reset
when it clears.
Evnt’ means that the alarm is used to trip an external event. If
this option is selected the front panel alarm message will not
appear.
‘
mAn’ means that the alarm will be latched, and can only be
reset after it has first cleared (called ‘manual reset mode’).
Table A - Alarm types
Value Alarm type
OFF No alarm
FSL PV Full scale low
FSH PV Full scale high
dEv PV Deviation band
dHi PV Deviation high
dLo PV Deviation low
LCr Load Current low
HCr Load Current high
FL2 Input 2 Full Scale low
FH2 Input 2 Full Scale
high
LOP Working Output low
HOP Working Output high
LSP Working Setpoint low
HSP Working Setpoint high
rAt PV Rate of change
AL4 only
Ct.OP CT open circuit
Ct.Sh CT short circuit