Omega RD-MV100 Series, User Manual

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1-17
Overview of Functions
1
1.5 Alarm Function
This function generates an alarm when the measured/computed data meets a certain
condition. When an alarm occurs, information notifying the alarm occurrence is
displayed on the screen. In addition, a signal can be output from the relay output
terminals on the rear panel of the RD-MV100 (only on models with the optional alarm
output relay function (/A1 through /A3)).
Alarm indication
The alarm conditions are displayed as alarm icons in the status display section and on
the trend, digital, bar graph, and overview displays. The detailed information about the
alarms is displayed in the alarm summary.
Alarms are displayed when the alarm conditions are met. You can select to clear the
alarm when the conditions are no longer met (non-hold alarm) or hold the alarm until it is
cleared (hold alarm).
Alarm indication example (overview display and alarm summary display)
Measured/computed value
Channel/Tag
The area corresponding to a
channel on which an alarm is
not occurring is displayed in
green.
The area corresponding to a
channel on which an alarm is
occurring is displayed in red.
Alarm type
Cursor
Unit
Cursor
Number of the alarm information displayed at the last line of the screen
Number of the alarm information in the internal memory
Tag/Channel
Alarm No. /Type
Date & Time
(when the alarm occurred).
Date & Time
(when the alarm released).
Mark (See section 6.1.)
Number of alarms
You can set up to four alarms for each channel.
Alarm conditions
The following eight conditions are available:
• Upper limit alarm
An alarm occurs when the measured value exceeds the alarm value.
• Lower limit alarm
An alarm occurs when the measured value falls below the alarm value.