sauermann CO2ST-S CO2 Switch User Guide
- June 5, 2024
- sauermann
Table of Contents
sauermann CO2ST-S CO2 Switch User Guide
CO2 switch / CO2 detector
Symbols used
Connections
- Infra-red sensor
- Inactive switch
- Active switch
- LCC-S software connection
- Alarm led
- Button for settings
- Relay terminal block
- Power supply terminal block
Electrical connections as per NFC15-100 standard
This connection must be made by a qualified and trained technician. To make the connection, the transmitter must not be energized.
NO: normally open
COM: common
NC: normally closed
Settings and use of the transmitter
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Threshold configuration
The button allows to activate or not an alarm (threshold), to set the action of the alarm (edge), to set the threshold(s) value, to set the time-delay and to acknowledge the alarm.
Working principle:
– By pressing on the button more than 3 seconds, you can validate the setting and go to the next setting.
– By pressing quickly on the button, you can increment a value and scroll down the different option or values. -
Activate or deactivate an alarm
– Press the button for 3 seconds, “CONF” is displayed then “NEG”, meaning that the relay is in negative security, it is excited during an alarm condition.
– If needed, press quickly on the button to switch the relay in positive security, the relay is de-energized during an alarm condition or a current breaking, “POS” is displayed.
– Press 3 s on the button, “Buzz” screen is displayed with “ON” or “OFF” blinking. Briefly press on the button to activate (“ON”) or deactivate (“OFF”) (according to the last saved configuration) the buzzer during an alarm condition.
– Press 3 s the button, “Alarm” screen is displayed with “On” or “Off” blinking (according to the last saved configuration).
– Press quickly on the button, the display changes from “On” (activated alarm) to “Off” (deactivated alarm).
– Press 3 s the button to confirm the setting. If the alarm is deactivated, the instrument displays the measurement; if the alarm is activated, the instrument displays the following setting. -
Set the action of the alarm (rising edge or falling edge)
– Press briefly the button to select the trespassing direction then press the button more than 3 seconds to validate this direction and set the thresholds.
-
Set the threshold(s) value
The first digit blinks, it corresponds to the positive (0) or negative (-) setting of the threshold value. Press briefly on the button to select the sign for the threshold value. Press on the button more than 3 seconds to validate.
The second digit blinks, press briefly on the button to scroll the numbers. Press the button more than 3 seconds to validate.
Repeat the process until the last digit to configure the threshold value, validate the threshold and go to the following setting.
If the monitoring edge has been selected, the transmitter displays the setting of the second threshold. -
Set the hysteresis
The hysteresis is only for the rising edge and the falling edge modes. In rising edge mode, the hysteresis allows to the transmitter to stay in alarm when the measurement is between the threshold and the threshold minus the hysteresis.
Ex: for a 100 Pa threshold and a 10 Pa hysteresis, the instrument will stay in alarm when the measurement will be between 100 and 90 Pa. In falling edge mode, the hysteresis allows to the transmitter to stay in alarm when the measurement is between the threshold and the threshold plus the hysteresis.
Ex: for a 100 Pa threshold and a 10 Pa hysteresis, the instrument will stay in alarm when the measurement will be between 100 and 110 Pa. The first digit blinks, set it pressing the button briefly several times then press on the button more than 3 seconds to set the following digit. Once the hysteresis is set, press the button more than 3 seconds to validate and set the time-delays. -
Set the time-delay 1 and the time-delay 2 (600 seconds maximum)
– In rising edge mode, the time-delay 1 corresponds to the time lag before the alarm goes off when the threshold has been reached. The time-delay 2, corresponds to the time lag before the alarm stops when the measurement is lower than the threshold minus the hysteresis. Setting procedure: “Time 1” for the time-delay 1 is displayed then the time in second. The first digit blinks, press briefly on the button and scroll the figures. Press on the button more than 3 seconds to validate. Repeat the process until the last digit to set the time-delay 1 value (from 0 to 600 s) and validate. “Time 2” is displayed the time in second. Repeat the process to set the time-delay 2.
– In falling edge mode, the time-delay 1 corresponds to the time lag before the alarm goes off when the threshold has been reached. The time-delay 2, corresponds to the time lag before the alarm stops when the measurement is lower than the threshold plus the hysteresis.
The setting procedure is the same as the rising edge procedure.
– In monitoring mode, the alarm of the transmitter goes off when the measurement is below the lower threshold and higher the high threshold. The time-delay 1 corresponds to the time lag before the alarm goes off when the measurement is below the lower threshold and higher the high threshold. The time-delay 2 corresponds to the time lag before the alarm stops when the measurement is between the lower and higher thresholds.
The setting procedure is the same as the rising edge procedure.
Configuration via LCC-S software (optional)
Mounting
To mount the transmitter, mount the ABS plate on the wall (drilling: Ø 6 mm,
screws and pins are supplied). Insert the transmitter on the fixing plate (see
A on the drawing beside). Rotate the housing in clockwise direction until you
hear a “click” which confirms that the transmitter is correctly installed.
Ambient model has not any fixing plate. 4 fixing holes are inside the back
housing. Use them to install the transmitter on the required location.
Maintenance: please avoid any aggressive solvent. Please protect the transmitter and its probes from any cleaning product containing formalin, that may be used for cleaning rooms or ducts.
Precautions for use: please always use the device in accordance with its intended use and within parameters described in the technical features in order not to compromise the protection ensured by the device.
Accessories
Please refer to the data sheet to get more information about available accessories.
https://sauermanngroup.com/en-INT/measuring- instruments/transmitters/software/lcc-s
Download the LCC-S software user manualhttps://sauermanngroup.com/en-INT /technical-documents?search=co2st
Download the CO2ST data sheet
Customer service portal
Use our Customer service portal to contact us
https://sauermann-en.custhelp.com
www.sauermanngroup.com
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>