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Once Valley Hold is set above 0, it automatically activates. The output signal remains the same until
one of two things happens:
•
•
Note that other signal processing functions (like Averaging or Peak Hold) cannot be used
concurrently with Valley Hold.
7.4 Setpoint
The Setpoint function is a temperature supervising alarm mechanism, which can be activated. A
Setpoint entry defines a maximum supervising value for the target temperature. If the Setpoint value
is exceeded, an alarm state will be signaled by a relays contact. A zero (0.0) entry as a Setpoint value
deactivates the alarm functionality (Alarm mode off). To activate the alarm functionality, set the
Setpoint entry to a value between the lowest and the highest measurable target temperature. Once the
Setpoint is activated the relay changes state as the current temperature passes the setpoint
temperature.
7.5 Deadband
Deadband is a zone of flexibility around the Setpoint. The alarm does not go abnormal until the
temperature exceeds the Setpoint value by the number of set deadband degrees. Thereafter, it does not
go normal until the temperature is below the Setpoint by the number of set deadband degrees. The
Deadband is factory preset to ± 2° (C or F). Adjusting the Deadband entry is accomplished through
software or manual input via the control panel. For information regarding the Endurance sensor
communication protocols, see section 10 Programming Guide page 49. The following figure is an
example of the Deadband around a Setpoint temperature of 960°C (1760°F).
ENDURANCE 1R
info@Raytek-Direct.ca
Temp
The valley hold time runs out. In this case, the signal reverts to actual temperature.
The actual temperature goes below the hold temperature. In this case, starts holding new
valley.
Signal Post Processing Details
hold time
Figure 23: Valley Hold
Rev. E1 Sep 2015
output temperature
object temperature
hold time
Time
1.800.868.7495
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