Schneider Electric AP9635 manual Temperature and Humidity, Brief status, Threshold Description

Temperature and Humidity Page

Brief status

Click Temp & Humidity on the left navigation menu to display the name, alarm status, temperature, and humidity (if supported) for each sensor.

Detailed status and configuration

Click the name of a sensor for detailed alarm status or to configure its values:

Identification and alarm status.

Parameter	Description
Name	A name for this sensor. Maximum: 20 characters.
Location	This physical location of the sensor. Maximum: 20 characters.
Alarm	One of the following is displayed:
Status	• Normal if this sensor is not reporting an alarm condition.
	• If this sensor is in an alarm state, the text of the alarm, indicating which threshold is violated,
	and the severity of the alarm, indicated by color (red for critical, orange for warning).
Thresholds	See the next two sections for descriptions of the configurable thresholds and Hysteresis values.

Thresholds. For each sensor, you set the same types of thresholds for temperature and (if supported) humidity measured at the sensor.

Threshold	Description
Maximum	If the threshold for maximum temperature or for maximum humidity for the sensor is
	exceeded, an alarm occurs.
High	If the threshold for high temperature or for high humidity for the sensor is exceeded, an alarm
	occurs.
Low	If the temperature or humidity drops below its low threshold for the sensor, an alarm occurs.
Minimum	If the temperature or humidity drops below its minimum threshold for the sensor, an alarm
	occurs.

Hysteresis. This value specifies how far past a threshold the temperature or humidity must return to clear a threshold violation.

•For Maximum and High threshold violations, the clearing point is the threshold minus the hysteresis.

•For Minimum and Low threshold violations, the clearing point is the threshold plus the hysteresis.

Increase the value for Temperature Hysteresis or Humidity Hysteresis to avoid multiple alarms if temperature or humidity that has caused a violation then wavers slightly up and down. If the hysteresis value is too low, such wavering can cause and clear a threshold violation repeatedly.

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