cofem MCO120 CO Sensor Control Panel Instruction Manual

Manual
COsensor control panel MiniCO
MCO120 / MCO120 DVBhttps://www.cofem.com/manuals_co/

MCO Control panel description

The MCO COsensor is an automatic conventional control panel which allows the connection OF CO and/or NO2 diffusion sensors.
In this way, the following models are available according their characteristics:
The MCO120 Control panel has 1 ventilation zone, with capacity of up to 20 sensors. This model have a dry contact ventilation output (C/NO). It exists the DVB version (Double Ventilation and Batteries), MCO120DVB, which has 2 independents dry contact outputs in addition to an auxiliary battery power system.
They are especially suitable for parking or areas that only need 1 zone of ventilation or the installation of a few sensors.
The MCO COsensor control panel allows to setting the CO concentration level for the activation of ventilation levels 1, 2 and alarm, in addition to the delay times for the activation and stop of those ventilation/alarm levels.
The concentration levels of CO and configurable times can be modified through the control panel that incorporates the central (see Figure 9 and Table 5).
Also, it disposes of a general fault output and an auxiliary supply output of 30Vdc.
The control panel allows the manual activation and deactivation of ventilation, as well as the deactivation of the buzzer.
The control panel uses diffusion sensors and factory calibration to operate during all the lifetime of those sensors, and certified by the UNE 23300.
1.1 Technical features

• Control panel with a single detection zone which allows the connection of diffusion sensors with brand COsensor, model SCO (CO) and SDN (NO2).
• Dry contact output (C/NO) ventilation 1, ventilation 2 (DVB models only) and alarm.
• Dry contact fault output (C/NO/NC).
• Auxiliary power output of 30Vdc 0,5A.
• Ventilation 1 level, ventilation 2 level (only DVB model) and alarm level selectable between 10 and 300 ppm.
• Delay time for the activation of ventilation 1 and ventilation 2 (only DVB model), independent and selectable between 0 and 10 minutes. Fixed delay time for the stop of 4 minutes.
• Delay time for the alarm activation selectable between 1 and 10 minutes. Fixed delay time of 1 minute.
• The DVB model includes a space for 2 batteries of 12Vdc and 2Ah of capacity.
• 3-digit 7-segment display.
• Measurements: 248x240x115mm
• Certified according the normative UNE 23300.

A
Power supply| 2,15 A| Ventilation dry contact| 230Vac/ 30Vdc 0,5 A
Batteries (only DVB model)| 2 x 12 Vdc 2 Ah SLA| Environmental conditions| -10ºC +50ºC     20%-95% HR
Battery charger (only DVB model)| 350 mA     27 Vdc 25ºC| Measurements| 248x240x115mm
Power supply fuse| 4 A| Weight (without batteries)| 2 Kg
Sensors by zone| MCO110 CO/NO2| Display resolution| 1 ppm
MCO120 CO/NO2| CO measure range| 10 – 300 ppm
IP| 30| Time between zone lectures| 30 seconds
Zone output voltage| 26 Vdc| Normative| UNE-EN 23300

Table 1. Technical specs

Operation of control panel

The main function of the COsensor Detection control panels is to control the activation and stopping of the ventilation system in addition to give an alarm indication as consequence of the high concentration of toxic gases (CO and NO2) in the detection zone.
In this way, the CO and/or NO2 sensors are distributed throughout the enclosure in accordance with the installation standards/regulations.
A recommended coverage for these devices can be between 200 and 300m2 , placing them at a height of between 1.5 and 2m from the ground.
All sensors must be connected to the zone that is available without exceeding the maximum capacity of each model, as indicated in Table 1.
When the panel control starts up, it performs an initial configuration of its modules and the recognition of the sensors in the area, while on the display it shows the installed software version for a few seconds and then a countdown (it lasts approximately 1 minute and a half) until the process ends.
The control panel is able to recognize the CO and NO2 sensors. In the display and for the computation of activations/deactivations, the sensor with the highest reading of concentration of toxic gases in the area is taken into account. In the case of the CO sensors, it shows the concentration in ppm. In the case of NO2, the measure is converted to an equivalent in ppm of CO. In this way, CO and NO2 detectors can be installed on the same detection line. The relationship between the NO2 reading and CO indication is linear, calculating 100ppm of CO for every 2.5ppm of NO2.
Through the control panel located in the front of the equipment (see Figure 9 and Table 5), it is possible to configure the levels of concentration of toxic gas for the activation of the ventilation relay 1, of the ventilation relay 2 (only in the DVB model) and alarm.
In the same way, the control panel allows to configure the delay time for the activation of ventilation 1, ventilation 2 (only in the DVB model) and alarm levels. The stop times of all these levels are fixed (see Table 2 or Table 3 referring to the models with one and two ventilation outputs, respectively).
The activation concentration levels of the ventilation and alarm systems are referred to CO concentration values.
Figure 1 is valid for MCO120 model and shows how the ventilation 1 and alarm system act over time according the toxic gas concentration level measured.
Table 2 shows the default values and the range of values between which they can be configured: the delay time and the level of concentration of toxic gas for the activation of ventilation 1 and the alarm for the MCO120 model.

Table 2: Parameters and values for the activation and deactivation of the alarm and ventilation.
Starting from rest, when the toxic gas concentration overcomes the ventilation level 1 in the zone, this ventilation activates after having been above this level for a time greater than the activation delay time 1.
If the toxic gas concentration in the zone drops below ventilation level 1, it will stop after the stop delay time.
The Table 3 shows the default values and range of values that can be configured through the front panel located on the control panel for the MCO120DVB model.

Table 3: Parameters and activation and deactivation values of alarm and ventilation
The MCO120DVB model works in the same way as the models with a single ventilation level, but incorporating a ventilation 2 with an activation level between that of the ventilation output 1 and that of the alarm, as shown in Figure 2.
When the toxic gas level increases above the activation level of ventilation 1, it can activate the ventilation 2, which has its own delay time for the activation, independent of that of ventilation 1.
If the toxic gas concentration (DVB model only) drops below the ventilation level 2 concentration, this one will stop after the stop delay time has elapsed.
The alarm system works in the same way as that the ventilation system with the peculiarity that, when it is activated, it also does the buzzer that incorporates panel control itself, in addition to the LED that indicates the alarm status (see Figure 9).
The level of toxic gas for the activation of the alarm will be always higher than that of ventilation 1 (and ventilation 2 in the model DVB). When the panel control activates the alarm status, so does the ventilation if it was deactivated.
When the panel control leaves the alarm mode, the ventilation will remain activated. The ventilation 2 (only in the model DVB) will turn off when the concentration of toxic gas is lower than ventilation 2 for a time greater than the delay to stop it. The same thing happens with ventilation 1, which will be deactivated when the measured concentration be lower that its respective level for a time greater than the delay to stop it.

Equipment storage and sensor lifetime

Al the COsensor equips must be stored in environmental conditions comprised between 0 y 50ºC 5-95% RH always avoiding condensation and without being exposed to the direct sunlight or water.
The sensors lifetime is limited to guarantee the correct operation before their exhaustion or aging. The date of manufacture is indicated on the sensor.
It is accepted a maximum time of use of the sensor of 3 months in addition to its lifetime to contemplate the time of storage and installation before its commissioning. After these periods of time, the sensor must be replaced.

Control panel installation

4.1 Installation of the chest and cable routing
The panel control is based in a rectangular metallic chest, a cover holder on the front, which tilts on the left side of the chest as a door and is kept closed with a screw located on the right side (A1 in Figure 3), and a separate plastic door that sits on top of the central, and is fixed to it with 2 screws located in the lower vertices (A2).
WARNING:
If you have to manipulate the cover holder, care must be taken with the ground cable that connects one of the pins of the cover holder to another located inside the chest.
(SEE CHAPTER 8 CONNECTION WARNING).
The control panel will be fixed above vertical wall. The lateral slots of the control panel must remain free for a correct heat evacuation. Figure 3 shows the ∅28mm knockouts for cable entry (B) located on the upper side and on the lower side (in case it is necessary to use additional entries), and the holes located in the bottom for the box for fixing the control panel to the vertical wall of: ∅10/∅7mm in the upper ones (C1) and ∅7mm in the lower ones (C2). 4.2 Internal layout
The control panel provides the elements indicated with the letters A, B, C and D in Figure 4. A. Power supply strip
Located at the top of the bottom of the chest. On it, the power supply is connected (Neutral, Earth and Line). The line cable must be connected through the terminal that has a fuse, and the ground cable through the central terminal.
B. Switch power supply
Circuit protected by a shield located at the bottom of the box in the central part of the panel control itself. It is connected to the power strip at its input and to the CPU board at its output. Its function is to adapt the supply voltage to that required by the other circuits.
C. Batteries
The control panel has space to place 2 batteries 12Vdc 2Ah if necessary (only DVB model).
They are located in the back of the chest, in the bottom and right side.
D. CPU circuit
It is located on the back of the cover holder protected by a shield. This is the circuit that carries out all the functions of the control panel and to which all the elements that depend on it are connected. For more about the connection strip of this circuit see Figure 6.
WARNING:
If you have to manipulate the cover holder, care must be taken with the ground cable that connects one of the pins of the cover holder to another located inside the chest.
(SEE CHAPTER 8 CONNECTION WARNING).
4.3 Connection of the elements
4.3.1 Supply
The control panel is powered through the strip shown in Figure 5 with a voltage of 110~230V ± 10% and a frequency of 50-60 Hz. The connection will be made by means of 3 wires with a minimum section of 1,5mm , being compulsory the connection of the ground cable to the supply terminal of the control panel.
DISCONNECT the NETWORK and BATTERIES voltage before to handling the interior of the control panel.
Do not cut off the control panel power supply during the boot process. Such action may cause a malfunction of the control panel. 4.3.2 CPU board
Figure 6 shows the general wiring diagram of the strip that incorporates the electronic board of the control panel.Figure 6: Connection output strip

1. Alarm:
   Dry contact output with a capacity of 1A (30Vdc).
   It is activated when the concentration measured by any sensor in the zone communicates toxic gas concentration values, for a time greater than the alarm activation delay, greater than or equal to the configured alarm concentration level.
   It is deactivated when the previous gas concentration is lower, for a time greater than the alarm stop delay, at the configured alarm concentration level.

2. Fault:
   Dry contact output with a capacity of 1A (30Vdc).
   It will be activated whenever there is a fault in the system or there is no power, indicating the fault status through its corresponding LED (for more information see Figure 9 and Table 4).
   It is only deactivated when there is no fault in the system and the control panel is powered (the Common-Normally Open (NO) contact of the relay is electrically open).

3. 30V Output:
   Auxiliary output of 30Vdc with a maximum capacity of 0,5A This output is protected by a self-resetting fuse and supervises voltage, excess consumption and crossed line. Allows powering of devices such as sirens.

4. Batteries (DVB model):
   In the case of the DVB model, this strip will be connected to the batteries.
   Through this connection, the batteries are charged, as well as the monitoring of their status.
   Battery charging is compensated based on battery temperature. This output/input is protected with a fuse and against polarity reversal. The box has space for 2x12Vdc 2Ah.
   The connection will be made as indicated as Figure 7. Respect the polarity of the batteries for correct operation of the serial connection.

5. Ventilation 1:
   Dry contact output with Common-Normally Open (C-NO) contact with a capacity of 1A (30Vdc).
   It is activated when the sensor with the highest measured concentration of toxic gas in the area communicates, for a time greater than the ventilation 1 activation delay, values greater than or equal to the configured ventilation 1 concentration level.
   It is deactivated when the previous toxic gas concentration is lower, for a time greater than the alarm shutdown delay, at the ventilation 1 concentration level. In the event that the zone alarm is activated, ventilation 1 of that zone will also be activated. In this case, for ventilation 1 to be deactivated in the zone, it will be necessary to wait for the alarm to deactivate, and then for the concentration of ventilation 1 for a time greater than the stop time of the ventilation 1.

6. Ventilation 2:
   Dry contact output with Common-Normally Open (C-NO) contact, with a capacity of 1A (30Vdc).
   It is activated when the sensor with the highest concentration of toxic gas in the area communicates for a time greater than the ventilation 2 activation delay, values greater than or equal to the configured ventilation 2 concentration level.
   It is deactivated when the previous toxic gas concentration is lower, for a time greater than the alarm shutdown delay, at the ventilation 2 concentration level.
   In the event that the zone alarm is activated, ventilation 2 of that zone will also be activated.
   In this case, for ventilation 2 in the zone to be deactivated, it will be necessary to wait for the alarm to deactivate and for the toxic gas concentration in the zone to be lower than the ventilation 2 concentration for a time greater than the ventilation 2 stop time.

7. Zone
   Outputs for the connection of the detection zones of the control panel.
   The zone output delivers approximately 24 Vdc, which is protected by protection systems in case of short circuit. The toxic gas thresholds with which the area works are described in Table 2 and Table 3, depending on whether it is the MCO120DVB model or not.
   All outputs will be made with 2 x 1.5 mm BRAIDED AND SHIELDED HALOGEN-FREE CABLE for distances up to 800 m. For greater distances 2 x 2.5mm BRAIDED AND SHIELDED HALOGEN FREE CABLE up to 1500 m.

4.4 Panel control language
Together with the panel control two labels without stickers in different languages are incorporated, which describe the main functionalities of the indicators and buttons on the control panel. Once the required language has been selected, insert both labels at the bottom off the cover, as indicated by the arrows in Figure 8. When the labels have been inserted, the language selection process is finished.

Start-up of the installation

The mains voltage must reach the control panel through an external switch controlled. Once powered, the control panel needs 1 minute and a half to enter the operating state. During this time, the display will show first the software version number installed and then a countdown timer.

Access level

6.1 Indicator lights and control buttons
The control panel has a front panel where the user can configure the requirements on which the activation and deactivation of the ventilation and alarm outputs are carried out.
In this chapter, it is explained meaning of the light indications and command buttons on the front panel of the control panels: MCO110, MCO120 y MCO120DVB
This front panel is common to all the control panels and is represented in Figure 9, where the
LEDs are marked with letters and the control buttons with numbers. 6.1.1 Indicator lights

The Led is associated with the configuration of the control panel by means of control button 3.
►  Led OFF: Panel control out of ventilation 1 configuration status.
►  Led ON: Setting ventilation 1 activation level.
►  Blinking Led: Setting the CO delay for the activation/deactivation of ventilation 1
Selection 2 B| __ Green| Setting the Ventilation 2 (DVB model).
__ The Led is associated with the configuration of the control panel by means of control button 3.
►  Led OFF: Panel control out of ventilation 2 configuration status.
►  Led ON: Setting ventilation 2 activation level.
►  Blinking Led: Setting the CO delay for the activation/deactivation of ventilation 2.
__**Selection 3 C| Green| Setting the alarm.
The Led is associated with the configuration of the control panel by means of control button 3.
►  Led OFF: Panel control out of alarm configuration status.
►  Led ON: Setting alarm activation level.
►  Blinking Led: Setting the CO delay for the activation/deactivation of alarm.
Supply| Green| Power status.
►  Led ON: Mains powered 230Vac.
►  Blinking Led: Battery powered (DVB model).
Alarm| **** Red| Alarm status.
►  Led ON: Alarm output activated.
►  Blinking Led: Control panel in alarm activation delay state.
General Fault F| Amber| General Fault status.
►  Led ON: Fault in the control panel related to its power supply, the sensor area or the batteries (DVB
model).
System Fault G| Amber| Processor failure.
►  Led ON: Non-operational panel control.
Active Vent H| ****** Green| Ventilation output status
►  Led ON: Ventilation 1 activated.
►  Blinking Led: Control panel in ventilation 1 activation delay status.

6.1.2 Control buttons

increases the time by 1 minute.
►   During setting the level on/off, pressing it increases the level by 10 ppm.
__| The button is associated with the configuration of the control panel by means of command button 3.
►   During the configuration of the delayed activation, pressing it decreases the time by 1 minute.
►   During setting the level on/off, pressing it decreases the level by 10 ppm.
| Allows the panel control setting.
►  1 pulsation: Ventilation 1 activation level (CO in ppm).
►  2 pulsations: Delay activation of ventilation 1 (in min).
►  3 pulsations: Ventilation 2 activation level (CO in ppm, only DVB model).
►  4 pulsations: Delay activation of ventilation 2 (in min, only DVB model).
►  5 pulsations: Alarm activation level (CO in ppm).
►  6 pulsations: Delay activation of alarm (in min).
| Activate/deactivate the ventilations
The model DVB activates and deactivates both ventilation systems at the same time.
| Stop buzzer.
It allows to stop the buzzer until a new event occurs (alarm or fault).

Maintenance

It is recommended that the system (the panel control and also the sensors) undergo a general visual inspection every 6 months through the following operations:

1. Check that all equipment is operational.

2. Inspect equipment for bumps or damage.

3. Check that the wiring and connection of the system is correct and that there are no signs of manipulation or deterioration.

4. Clean equipment properly.
   In addition, every 12 months it is recommended to perform the following additional operations:

5. Check that the panel control can activate the ventilation relays (via the control button or by exposing a sensor to an adequate concentration of CO).

6. Check that the CO sensors respond to presence of CO. To do this, the sensors can be exposed to CO gas and check that, when remaining for a time in the presence of this gas, the LEDs of the sensors blink twice or that it remains fixed (depending on the concentration that they measure).

7. If necessary, check that the control panel can activate the alarm relay: for example, during the verification of point 6, a sensor in the area with a high concentration of CO gas can be contained so that the control panel receives readings above the level alarm for a time greater than its delay, checking that the alarm relay is activated.

8. If the panel control model is DVB, disconnect the power supply from the panel control.
   The control unit must activate the buzzer and the “Power” LED (letter D in Figure 9) will blink. After verifying that the system is stable and continues to function normally, reconnect mains power. The power LED (letter D in Figure

8. must be ON and fixed.

9. Manufacturing date. Check the manufacturing date of the sensor. If its lifetime is exceeded, it must be replaced (take into account the considerations described in chapter 7 Maintenance).

Warning Connection

NOTE:
COFEM S.A. reserves the right to make changes due to typographical errors misprints of current information, or improvements to programs and/or equipment at any time and without notice.

FABRICANTE DE PRODUCTOS CONTRA INCENDIOS– FIRE PROTECTION MANUFACTURER
FABRICANTE DE PRODUTOS CONTRA INCÊNDIOS
C/ Compositor Wagner, 8 – P.I. Can Jardí – 08191 RUBÍ (Barcelona) ESPAÑA.
Tlf.: +34 935 862 690 – cofem@cofem.com – www.cofem.com

References

• COFEM Tecnología y Protección Contra Incendios

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