Precision Digital PD570 - Manual (Page 23)

5.3 Alarm Group (G.ALM)
Press SET/ENT key to select alarm group. (Refer to parameter map in section 3.)
The parameter to set the type of alarm to be set for alarm 1.
The types of alarms selectable are shown in Table 3: Alarm Selection.
PV
The parameter to set 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
The parameter to set the dead band (Hysteresis) of alarm 1.
PV
The parameter to set the delay time before of alarm 1 is triggered.
PV
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
S indicates standby operation
F for forward operation
r for reverse (failsafe) operation
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
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
?
NOTE
PWD
Q G.CTL Q G.IN
K R
G.COM
Q G.RET Q G.ALM
ST ST
ST ST
ST T
Alarm Output Settings:
- Forward: Relay energized in alarm condition
- Reverse: Failsafe operation. Relay energized during normal
operating conditions
SP
AH.FS
PD570 Series Nova Process and Temperature Limit Controller Instruction Manual
23