VERDER CARBOLITE GERO 3016, Инструкции по установке, эксплуатации и обслуживанию

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Acknowledging an Alarm
Note: An alarm can also be acknowledged by simultaneously pressing both the page
and scroll buttons.
7.0.2 Hysteresis
Hysteresis is the difference between the point at which an alarm switches ON and the
point at which it switches OFF .
It can be used to define a short temperature range wherein the alarm relay activates in
order to prevent the relay switching on and off repeatedly if the product temperature
fluctuates by a few degrees when close to the threshold / deviation value.
Example:
A product is configured to have a "High" alarm, and the threshold value is set to 100°C.
The alarm activates a door lock. The product temperature is fluctuating slightly between
99°C and 100°C. To prevent the relay from switching ON and OFF too rapidly as the
temperature changes, a hysteresis value can be set to create a buffer. A hysteresis
value of 5°C would only deactivate the door lock at 95°C, so any small temperature
fluctuations would not continually influence the relay in this scenario.
Note: The hysteresis parameter (
HYST
) is accessible only when logged in at Operator
Level 3 or Configuration Level (see section 9.0).
To adjust the hysteresis:
1. From the home display, press the page button until
ALm
list appears.
2. Press the scroll button until the
HYST
parameter appears.
3. Use the up and down arrows to adjust the parameter.
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