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73VR31BLD USERS MANUAL EM-7397-C Rev.4
2.8 ALARM SETTING (INDIVIDUAL)
2.8.1 ANALOG ALARM
Figure 2.8.1: Alarm setting for analog signal (Individual).
Alarm Setpoint, Deadband (1)
Specify up to 4 setpoints in engineering unit within the Input Range. Alarms are reset when the signal goes out of
the alarm zone by the preset deadband values.
If you set only “High” and “Low” setpoints, they must be set immediately next to the “Normal” zone.
Deadband is used to avoid the alarm ON and OFF quickly and repeatedly around the setpoint when the input signal
changes that way. The alarm, once triggered, does not reset until the signal passes the point by the preset deadband.
Alarm setpoint / Deadband
Max. 6 digits including a decimal point and minus sign
Normal Zone (2)
Set a specific range that is judged as a ‘normal state’ so that relevant data is continuously plotted. Consequently,
while a pen you have set up is within this range, it means a corresponding input signal is in the normal state.
Zone Color (3)
You can apply specific colors to represent each zone divided by the limits for use in the Display views. Use the color
palette.
NOTE
256 colors are used in the 73VR3100. If you choose a color out of this, it may not be represented
accurately on the 73VR3100 screen.
Output (4)
Alarm contact outputs can be provided to the alarm output terminal
Choose Enable to activate an relay output.
Relay (5)
Specify the zone(s) in which you wish the contact to be turned on or off.
Alarm Message (6)...(9)
Set Enable to the thresholds where Messages are to be displayed on the Alarm History.
Up messages appear when the signal goes across an alarm setpoint upward. Down messages appear when the
signal goes across an alarm setpoint downward. Message contents up to 10 characters respectively for Up and Down.
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1
2
3
1
5
9
8
6
7
