Despatch MIC1462 Controller Manual - Manual (Page 63)

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SECTION 8: ALARM MODE
The Alarm Mode parameters control the type of alarms used and their settings.
To enter the Alarm Setting Mode from Base Mode:
1. Press the MODE key until Alarm appears in the message display
2. Press the SCROLL key to enter the Alarm Setting Mode.
To return to Base Mode:
1. Press the MODE key until Basemode appears in the message display.
2. Press the SCROLL key to return to Base Mode.
Press the SCROLL key to step through the parameters. Press the UP and DOWN keys
to change the parameter setting.
Table 8-1
Alarm Mode Parameters
STEP DESCRIPTION MESSAGE
DISPLAY FUNCTION AVAILABLE SETTING
1 Alarm 1 Type Alarm 1 Specifies Alarm 1 Operation P_hi - Process High
P_Lo - Process Low
dE - Deviation
bAnd - Band
nonE - None
2 Alarm 2 Type Alarm 2 Specifies Alarm 2 Operation P_hi - Process High
P_Lo - Process Low
dE - Deviation
bAnd - Band
nonE - None
3 Alarm Inhibit Inhibit Specifies which alarms are inhibited nonE - No inhibit
ALA1 - Alarm 1
ALA2 - Alarm 2
both - Both Alarms
4a Process High
Alarm 1 value HiAlarm 1 If Alarm 1 is a Process High alarm,
the value of process variable at or
above which Alarm 1 will be active Input Range Max. to
Input Range Min.
Default = Input Range
Max.
4b Process Low
Alarm 1 value LoAlarm 1 If Alarm 1 is Process Low Alarm, the
value of process variable at or below
which Alarm 1 will be active Input Range
Max. to Input
Range Min.
Default =
Input Range Min.
4c Band Alarm 1
value BaAlarm 1 If Alarm 1 is a Band Alarm, the band
of process variable values (centered
on the setpoint) outside which the
process variable will cause this alarm
to be active. ± (input span) from
setpoint. Default =
five input units.