Omega RD-MV100 Series User Manual page 127

6.2 Alarm Setting
Explanation
6-6
Note
If you select delay alarm (T or t) for the alarm type, you must set the alarm delay period. See
section 6.3.
4. Value
Enter the value at which the alarm is activated.
Pressing the [Input] soft key displays a window used to enter a numerical value.
Enter a value in the allowed range and press the DISP/ENTER key.
For the procedures related to entering numerical values, see "Entering
Numbers" on page 3-21.
*
5. Relay On/Off
Set whether or not to activate the output relay (On/Off). When turned ON, the
output relay number box appears.
*
6. Number
Set the output relay number. For the correspondence between the output relay
number and the output relay position, see section 2.4, "Alarm Output Wiring
(Option)."
* When the alarm output relay option is not installed, these settings are void.
Confirming operation
To confirm the new settings, press the DISP/ENTER key.
To cancel the new settings, press the ESC key. A window appears for you to confirm the
cancellation. Select [Yes] using the arrow keys and press the DISP/ENTER key.
Alarm type
The following eight types of alarm type are available.
Name
Upper limit alarm
Lower limit alarm
Difference upper limit alarm
Difference lower limit alarm
Upper limit on rate-of-change alarm
Symbol Description
H An alarm occurs when the measured value
becomes greater than or equal to the alarm
value.
L An alarm occurs when the measured value
becomes smaller than or equal to below the
alarm value.
*1
h An alarm occurs when the difference
between the measured values of two
channels becomes greater than or equal to
the alarm value.
*1
l An alarm occurs when the difference
between the measured values of two
channels becomes smaller than or equal to
the alarm value.
*2
R The amount of change of the measured
values over a certain time interval is
checked. An alarm occurs when the
amount of increase becomes greater than
or equal to the specified value (see section
6.4).
The time interval is specified using a
number of measurements.