Precision Digital PD540 - Manual (Page 33)

SP
S indicates standby operation
F for forward operation
r for reverse (failsafe) operation
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5.7 Alarm Group (G.ALM)
This parameter sets the type of alarm to be set for alarm 1.
The types of alarms selectable are shown in Table 3: Alarm Selection.
PV
This parameter sets the alarm trigger point for the alarm set in ALT1.
This parameter displays if a high, low, or high and low limit alarm was selected for ALT1.
PV
PV
This parameter sets the dead band (Hysteresis) of alarm 1.
PV
This parameter sets the delay time before of alarm 1 is triggered.
PV
Note: The menus for alarm 2 and 3 are the same as alarm 1.
Alarm Output Settings:
- Forward: Relay energized in alarm condition
- Reverse: Failsafe operation. Relay energized during normal
operating conditions
Alarm Types and LED Display
Decimal point always displayed
H indicates a high alarm
L indicates a low alarm
o for outside range of deviation band
I for inside range of deviation band
A indicates an absolute value alarm
d indicates a deviation alarm
This establishes the high d eviation range to trigger the alarm of deviation. This parameter
displays if a deviation alarm was selected in ALT1.
This establishes the lo w deviation range to trigger the alarm of deviation. This parameter
displays if a deviation alarm was selected in ALT1.
PV
PV
Standby Operation:
The alarm will n ot trigger if the alarm condition
occurs during the following activities...
- during power-up
- the set point is changed
- the type of alarm is changed
Press SET/ENT key to select alarm group. (Refer to parameter map in section 3.)
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NOTE
G.alm
alt1
al-1
al1.H
al1.l
a1db
a1dy
AH.FS
G.AT G.SP G.PID PWD G.CTL G.IN
G.COM G.RET G.ALM G.OUT
PD540 Series Nova Digital Process and Temperature Controller Instruction Manual
33