Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 442

Temperature Input Terminals
Temperature Zone
Counter Function
(Zone Count)
Counting starts when this
temperature is exceeded.
When the temperature zone is set
to 10 ° C above the set temperature
(95 ° C), the function counts how
long the temperature is within that
10 ° C zone.
5. To set the OFF delay function, input the desired value in the Comparator
Off Delay field.
6. Return to the General Tab, click the Download Button, and then click the
Reset Button to reset the Unit.
7. Click the OK Button and exit the window.
This function times (in 1-second units) how long the temperature input value is
within a user-set temperature range. The zone count can indicate when pre-
ventative maintenance is required for devices or applications that deteriorate
at a fixed rate within the user-set temperature range.
Select the temperature zone settings in the Comparator Tab. The tempera-
ture zone boundaries are defined by the High High Limit (HH), High Limit (H),
Low Low Limit (LL), or Low Limit (L). Any threshold value can be set in the
Threshold Zone Counter to indicate when the threshold time within the zone
has been exceeded.
The Over Threshold status can be read in the Maintenance Information Win-
dow or via an explicit message.
Temperature
10°C
85°C
Counting Counting
starts stops
Counting
starts
Section 7-6
Time
421