Sensors and devices

This Article contains the following:

SM_T_H_COM Standalone Sensor

Configuration of the SM_T_H_ COM combi sensor

Offset - Settings

Sensor-related system events

Event classification

Defining a counter job

Depending on used model, the CS141 offers to connect external sensors and devices sensors.

These CS141 models support the connection of sensors:

• CS141 SC
• CS141 L
• CS141 R2

• CS141 Mini

   

SM_T_H_COM Standalone Sensor

This example shows how to configure the SMT_H_COM standalone sensor, a combined temperature and relative humidity sensor available for CS141.

The supplied standard length of the cable to connect the sensor to CS141 is 1.8 meters. If required, cable length up to 30m can be used.

Wiring the external sensor

Connect CS141 COM 2 to SM_T_H_COM. CS141 does not require rebooting.

Basic Setup Configuration

Under Devices > Setup, go to Configuration and change the setting at COM2 from none to Sensor.

After changing, define type of sensor connected to CS 141. 

In this case, select SM_T_H_COM:

Press Apply to start the corresponding service. The status bar indicates the process.

While Sensor is restarting, the according menus will be prepared. Please wait until the Sensor mark is set to “OK” before entering the configuration dialog of the sensor.

Configuration of the SM_T_H_ COM combi sensor

Under the main tab Devices, open the sub menu Sensors and click on Setup. This will open the Sensor configuration dialog.

Name

At Name, enter the name, a description or an installation place of the sensor. The Name will appear at the sensor monitoring screen.

Thresholds Low / High und Alarm functions

The SM_T_H_COM combined sensor provides two different sensor types. The temperature sensor operates between -25 ° C and +100 ° C. The humidity sensor measures humidity range 0% and 100%. After installing the sensor, the maximum sensor range will be shown without a range restriction or notification markers. In order to define an alarm behavior, the CS141 needs information about the critical values and if necessary, a configured measuring range.

Please note the following rules during configuration:

1. The pre-alarm must be lower than the critical alarm setting.

2. The relative humidity is a minimum of 0% and a maximum of 100%

3. The coldest temperature value is -25 ° C and the highest value + 100 ° C

Note:
As long as the respective checkmarks in the checkboxes for the respective alarms are not set, these values will be ignored. This means you can configure and test all events, and, if necessary, even define a specific value for the alarm behavior.

Offset - Settings

Although the SM_T_H_COM is already a calibrated sensor, the operating environment may require different values. The correction values ​​will be defined via offset settings:

These values will be added or subtracted from the value the sensor provides. This allows harmonizing the sensor values with calibrated external measurements and adapting the sensor for special operating conditions.

Sensor-related system events

The CS141 provides executive jobs via the event management of connected sensors.  The available system events refer to the measured values of the connected sensors. The following events are available for SM_T_H_COM.

SM_T_H_COM Temperature High

The value at Threshold (high) defines the upper critical temperature limit. If this temperature is exceeded, a corresponding alarm behavior can be triggered.

SM_T_H_COM Temperature Low

The value Threshold (low) defines the lower critical temperature limit. If this temperature is undershot, a corresponding alarm behavior can be triggered.

SM_T_H_COM Temperature Normal

Defined by the values for the upper and lower temperature limits. If no limits are entered, any displayed temperature will be displayed as "normal“.

SM_T_H_COM Humidity High

The value is defined by Threshold (high) for the relative humidity and determines the upper critical limit for humidity. If this value is exceeded, a corresponding alarm behavior can be triggered.

SM_T_H_COM Humidity Low

The value is defined via Threshold (low) for the relative humidity and determines the lower critical limit for humidity. If this value is undershot, corresponding alarm behaviour can be triggered.

SM_T_H_COM Humidity Normal

Defined by the values for the upper and lower relative humidity. If no limits are set, any displayed humidity will be displayed as "normal".

SM_T_H_COM Connection Lost

If the connection between the CS141 and the SM_T_H_COM tears off, a corresponding alarm behavior can be triggered via this system event.

SM_T_H_COM Connection Restored

The counter event to Connection Lost: The connection has been restored; a corresponding alarm behavior can be triggered via this system event.

Event classification

At the sub menu Sensors, click on the menu Events:

All sensor events use the same event classification:

• Temperature / Humidity High
• Temperature / Humidity HighPreAlarm
• Temperature / Humiditiy normal
• Temperature / Humidity LowPreAlarm
• Temperature / Humidity Low

Click > to open the general job list.  With +, the job configuration dialog will be triggered to add a new job to the current job list.

Note:

For detailed information about how to manage jobs, refer the following chapter in the CS141 manual: Managing Jobs or visit the corresponding Help Center article: Event handling

Defining a counter job

Depending on the configuration, some executable jobs require a counter job, while others do not need to be executed if the event is no longer pending. This type of job is configured to trigger when the corresponding new event occurs. For example, the contact is automatically closed when "Temperature: High" is reached and reopened as a counter event when "Temperature: Normal" is reached. Meanwhile, a mail notification is sent every five minutes while the "Temperature: High" event is pending.

Do not confuse a counter-event with a counter-job. A counter-event refers to an event that is pending, while a counter-job is a job that is triggered by any event in the chain. Jobs and events are relative to each other in this relationship.