KR101489221B1 - Control device with clean air-conditioning functions - Google Patents

Abstract

In the present invention, a differential pressure sensor is installed to measure the difference between the pressure in the outside of the clean room and the inside pressure, so that the internal air pressure is always kept higher than the external air pressure by a set value. If an abnormality is detected, the number of revolutions of the FFU is increased to quickly remove the particles. The clean room can be divided into one or more groups, and each group can be controlled to have different differential pressure and particle concentration. To a multifunctional clean air conditioning control device capable of controlling so as to be interlocked.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a multi-

In the present invention, a differential pressure sensor is installed to measure the difference between the pressure in the outside of the clean room and the inside pressure, so that the internal air pressure is always kept higher than the external air pressure by a set value. If an abnormality is detected, the number of revolutions of the FFU is increased to quickly remove the particles. The clean room can be divided into one or more groups, and each group can be controlled to have different differential pressure and particle concentration. To a multifunctional clean air conditioning control device capable of controlling so as to be interlocked.

It is important to keep the inside of the clean room higher than the outside air pressure in order to keep the inside air always clean, to prevent the outside air from coming into the inside, and to keep the number of particles (dust) Do.

The conventional FFU controller can control up to 32 FFUs by the button control method, and the differential pressure interlocking, particle interlocking and door interlocking are not performed, so that the condition inside the clean room can not always be kept uniform.

In addition, since it is impossible to divide the clean room into different pressures and particle concentrations in a wide clean room, the clean room is maintained at a high set value under the same condition, and thus there is a problem that the maintenance cost is high and the control management can not be performed by the user in a desired clean room .

Also, since the conventional FFU controller has almost no function to control itself and is performed in the upper monitoring system EMS, it sometimes happens that the operator has a long line and wastes unnecessary time.

The conventional FFU controller does not know the function of each button because it does not have a help function, which causes a malfunction and often fails to perform the desired control.

In the prior art related to the present invention, Korean Patent Registration No. 10-0720311 filed and filed by the applicant of the present invention discloses a stocker cleaning system for removing dust and harmful gases contained in the air inside the stocker. However, in the multifunctional clean air conditioning control device designed and manufactured according to the present invention, the multifunctional clean air conditioning control device capable of performing various functions including maintenance of a set differential pressure, set particle density, door interlocking control, There is a difference.

The problem to be solved by the present invention is to provide a convenience to the operator or users by configuring the control method as a touch screen, and to simultaneously control the FFU control and the lower exhaust (EXHAUSTER) By measuring the pressure online, it maintains the set differential pressure, saves energy, and maintains the particle concentration inside the clean room at the set value to increase the yield of the product.

Another problem to be solved by the present invention is to set one or more groups in a clean room to set different groups of different pressure and particle concentrations and to maintain a set pressure difference and a particle concentration so that efficient energy management is possible, And to provide a multifunctional clean air control device capable of actively coping with the problem.

Another object of the present invention is to provide a control program designed according to the present invention, which has an analog input terminal, a digital input terminal, a digital output terminal, a communication means and a touch screen, The particle concentration is maintained and the FFU operation is controlled by sensing the opening and closing of the door to actively cope with the demands of users and efficiently save the energy due to the maintenance.

The present invention solves the problem of the present invention by providing a differential pressure sensor to measure the difference between the pressure in the outside of the clean room and the pressure in the inside of the clean room so that the pressure in the interior is always kept higher than the outside air pressure, The number of particles per unit volume) is measured in real time to increase the number of revolutions of the FFU if the set value is detected, and the FFU is controlled to be interlocked with the door to provide a multi-function clean air conditioning control device .

Another solution to the problem of the present invention is to divide the clean room into one or more groups and to control the door interlocking FFU control and the particle concentration at different set pressure, A digital input terminal for detecting opening and closing of the door, and a digital output for performing alarm and status output of the FFU. Terminal and a communication terminal for receiving an analog value input from the particle sensor.

A further object of the present invention is to provide a clean room control system for controlling the difference in pressure between the outside of the clean room and the inside of the clean room with a differential pressure sensor to control and maintain the rotational speed of the FFU at a set differential pressure, The FFUs belonging to the respective groups are controlled under the conditions set in the respective groups. These control means are all designed and manufactured in accordance with the present invention and are configured to operate by a control program mounted on the memory, .

A further object of the present invention is to provide a color touch screen of about 7 inches which can be conveniently used by users and can display all the FFUs used for control on one screen, The characteristic and the state of each object can be seen when the user touches the object of the touch screen, and the help is displayed when the user needs help for using among the objects.

The present invention provides a convenience to the operator or users by configuring the control method as a touch screen, and can simultaneously control the FFU and the lower exhaust (EXHAUSTER). The pressure of the outside and the inside air is measured online To maintain the set differential pressure to save energy, and to measure the concentration of the particles inside and maintain the set value, thereby increasing the yield of the produced product.

Another advantage of the present invention is that the operation of the clean room is more efficient than the maintenance of one group by dividing the inside of the clean room into one or more groups, setting different differential pressure and particle concentration in each group, and maintaining the set pressure difference and the particle concentration And to provide a multifunctional clean air control device capable of energy saving and capable of actively coping with the demands of users.

Another effect of the present invention is to provide a control program designed according to the present invention, which includes an analog input terminal, a digital input terminal, a digital output terminal, a communication means, a touch screen, The FFU operation is controlled to a set value by detecting the opening and closing of the door by maintaining the differential pressure and the particle concentration set to be different from each other, thereby actively coping with the demand of users and efficiently saving the energy due to the maintenance.

Another effect of the present invention is that a color touch screen of about 7 inches can be used conveniently by users, all the FFUs used for control can be displayed on one screen, and each of the objects displayed on the touch screen can be displayed The user can view the properties and status of each object when the user touches the object. In addition, when the user needs help for the use of the object, the help is displayed so that the object can be easily and conveniently used.

FIG. 1 schematically shows a general configuration of a multifunctional clean air conditioning control apparatus according to the present invention.
FIG. 2 shows a basic screen configuration used for controlling the multifunctional clean air conditioning control apparatus according to the present invention.
3 is a screen for monitoring operation status and changing the speed of the interlocked FFU in the touch screen of the multifunctional clean air conditioning control apparatus according to the present invention.
FIG. 4 is a screen for monitoring operation status and changing speed of 32 fans of the lower exhaust (EXHAUSTER).
FIG. 5 shows a method for confirming and changing various setting values for interlocking operation.
6 is a screen capture for setting of the multifunctional clean air conditioning control device.
7 shows a screen for the differential pressure interlocking setting mode.
Fig. 8 shows a screen for the door interlocking setting mode.
9 shows a screen for the particle interlocking setting mode.

Hereinafter, the present invention will be described in detail.

The multi-function clean air conditioning control apparatus according to the present invention includes a differential pressure sensor for detecting the pressure difference between the outside of the clean room and the inside of the clean room and measures the difference between the outside and inside air pressure to maintain the inside pressure at a value higher than the outside air pressure The particle sensor is installed in the clean room to measure the particle concentration in real time. When the particle density is detected to be higher than the set value, the particles are quickly removed by increasing the number of revolutions of the FFU. The clean room is divided into one or more groups The group can be controlled by setting different differential pressures and particle concentrations. The construction of the present invention will be described in detail.

<Examples>

A specific embodiment according to the present invention will be described.

The multifunctional clean air conditioning control apparatus according to the present invention has a maximum of 32 FFU control monitoring functions, a maximum of 32 lower EXHAUSTER control monitoring functions, and individual operating condition monitoring and control functions.

The multifunctional clean air conditioning control device according to the present invention is capable of monitoring over-current abnormality of the fan motor controlled by the FFU, monitoring the fan motor speed abnormality, displaying an abnormality in the occurrence of an abnormality, Function.

The multifunctional clean air conditioning control apparatus according to the present invention is a touch-screen type wall-mounted type and has a real-time abnormal monitoring function by multi-scan communication.

The multifunctional clean air conditioning control apparatus according to the present invention comprises a memory mounted with a control program designed according to the present invention, a microprocessor for executing a control program mounted on the memory, and a microprocessor for operating the FFU according to a control program executed by the microprocessor And a plurality of analog input terminals and a plurality of digital output terminals. Therefore, there is an advantageous effect that the FFU monitoring and control of the small clean room alone can be performed.

The clean room is designed to keep the internal pressure higher than the outside to prevent dust or bad air from entering into the clean room.

The set value or the set value in the specification of the present invention have the same meaning as the 'set allowable range', the 'set range' and the 'set value' used for the upper and lower limits.

The meaning of the 'object' described in the specification means all things that are displayed on the touch screen so that when a user touches it, a given control operation is performed or a next screen is displayed or a meaning is given to the users.

The analog input terminal provided in the multifunctional clean air conditioning control device according to the present invention is connected to a differential pressure sensor for measuring the difference between the pressure of the outside and inside of the clean room and the differential pressure measured in real time by the differential pressure sensor, And is configured so as to be maintained in the differential pressure allowable range set in the memory.

More specifically, when the differential pressure, which is the difference between the outside and inside air pressure, is lower than the allowable range set in the memory, the rotational speed of the fan motor linked with the FFU is increased to control the air pressure inside the clean room to be within the allowable range.

In one concrete operation example, the differential pressure interlocking is started when the pressure difference is maintained outside the permissible range for 5 seconds immediately after the currently measured differential pressure deviates from the set permissible range (ex: 0.7 mmAq to 1.3 mmAq).

In one specific example, if the differential pressure value measured by the current differential pressure sensor is within the tolerance range of the differential pressure fluctuation with reference to the set differential pressure, and the difference between the maximum and minimum values of the current rotational speed (rpm) Is maintained for 20 seconds or less within 20 rpm, the differential pressure is stabilized and it is determined that the differential pressure interlocking has succeeded and the differential pressure interlocking is stopped.

In the present invention, one or more groups are set in one clean room, a differential pressure sensor capable of measuring a differential pressure is installed in each group, the measured differential pressure is maintained within the allowable range set for each group, As shown in FIG.

There are many reasons to set up a group in a clean room. For example, when the products produced in Group A and Group B are different from each other and the conditions of the clean room required when manufacturing the respective products are different from each other, a high differential pressure setting Energy can be saved more than uniformly controlled according to the range, and it is possible to control according to the requirements of users.

If the differential pressure measured by the sensor fluctuates due to the movement of the equipment in the clean room, frequent differential pressure interlocking can be prevented when controlling the 'differential pressure tolerance time' to a sufficient value.

Further, when the particle sensor is fixedly installed in the clean room and is connected to the communication terminal for the sensor and is higher than the allowable range (set tolerance range) set based on the particle concentration (the number of particles per unit volume) measured by the particle sensor, The speed of rotation of the fan is increased to quickly remove the particles in the clean room so as to be maintained in the set concentration range (allowable range).

The particle concentration can be expressed by the number of particles per unit volume. Both have the same meaning.

Particle density control inside the clean room can also be divided into one or more groups and the FFUs installed in each group can be set differently or under the same conditions.

The filter for removing particles (dust) is configured to purify the air passing through the lower exhaust using an air purifying filter, and pass clean air through the air purifying filter installed in the FFU to inject clean air into the clean room.

For example, as described in the differential pressure mode, the reason for dividing the inside of the clean room into the group A and the group B is that the products produced in the group A and the group B are different from each other, and the conditions of the clean room Or if one of them is to be more strictly controlled. In case of A product produced in group A, it is required to have a high degree of accuracy. In case of B product produced in group B, When demanding a product, A group can save energy by controlling particles A and B to a uniform particle concentration range by controlling the particle concentration to be lower than the B group and keeping it cleaner than air supplied to the B group And can be controlled in accordance with the requirements of users.

More specifically, the particle sensors installed in each group have a unique ID. For example, among the data measured in real time from the particle sensor located in the A group, the current particle density (number) is set to the set concentration range of the A group particle Range, the A group FFU increases the rotation speed to quickly lower the particle concentration, and when the particle concentration of the A group falls within the set allowable range, the A group FFU is switched to the normal operation mode.

In addition, a contact terminal is provided in a door installed for a clean room access, and a door terminal is opened and closed by connecting a contact terminal and a digital input terminal, so that the door can be configured to be interlocked with the FFU controller.

In addition, the setting conditions of the FFU linked with the door can be different for each group. For example, the group A can be set to be unused, the group B can be set to be used, and the group A and B can be set to be used. It is possible to control the set value of the rotation speed (rpm) to operate for a time set different from each other.

The lower exhaust (EXAUSTER) is configured so that the fan corresponding to the lower exhaust is operated depending on the presence or absence of the input contact signal of the digital input terminal.

When the A contact (ON) is input to the input signal of the digital input terminal, the lower exhaust operates the corresponding fan (FAN) at the set rotational speed (rpm), and when the B contact (OFF) FAN) operates at a rotational speed (rpm) of zero (0).

Operation mode is divided into REMOTE mode and LOCAL mode. In the remote mode, since the priority of setting and operation is in the upper host (HOST), the setting value can not be changed at the local (LOCAL) . If you want to change the setting value from host host (HOST), the operation mode must be in remote mode.

In the local mode, the priority of the setting and operation is in the multifunctional clean air control apparatus manufactured according to the present invention. In the upper host (HOST), the status of each FFU / FAN controller can be monitored, but control such as speed change is impossible.

The communication connection (for example, RS-485) between the multifunctional clean air conditioning control device and the host computer according to the present invention can be connected using Modbus protocol or FFU-dedicated protocol.

It has the authority to control from the host computer only in the remote mode, either the local mode or the remote mode. When the state of the multifunctional clean air conditioning control apparatus is the local mode, the state of the FFU is changed to the local mode and transmitted to the host computer. This indicates that the multifunctional clean air conditioning control apparatus is set to the local mode when the multifunctional clean air conditioning control apparatus is not controlled by the host computer.

FIG. 1 schematically shows a general configuration of a multifunctional clean air conditioning control apparatus according to the present invention. Since the description of the technical structure has been described above, a detailed description of FIG. 1 will be omitted.

The following will be described based on the function displayed on the touch screen by the control program implemented in the multifunctional clean air control apparatus developed and developed according to the present invention.

2 shows a basic screen configuration according to the present invention.

FIG. 2 shows a basic screen configuration of the multifunctional clean air conditioning control apparatus according to the present invention. When the power is turned on, the screen shown in FIG. 2 is displayed on the touch screen after booting of the apparatus. After the power is applied, the boot time of the multifunctional clean air control unit takes about 10 to 15 seconds.

The meaning of the object displayed on the screen of FIG. 2 will be described.

In the item 'FFU' displayed on the upper part of the touch screen, you can change the operation status and speed of the interlocked FFU. The multifunctional clean air conditioning control apparatus of the present invention is configured to control 32 FFUs from [01] to [32] as shown in the display panel. This is an example, and an extended design can be made based on the present invention, if necessary.

FIG. 2 shows a screen in which 'EXHAUSTER' is displayed adjacent to the FFU shown in the upper part of FIG.

In FIG. 2, 'SET' shown at the top can change setting items for interlocking operation.

In FIG. 2, 'REMOTE' shown in the upper part can change the operation mode (Local / Remote) of the multifunctional clean air conditioning control device.

In FIG. 2, 'LOGIN' shown at the upper part is for confirming and authenticating the authority through the change of the speed and login at each setting change. LOGIN exists as a normal user LOGIN and an administrator LOGIN.

In FIG. 2, the FAN mode shown at the top is used to set the FAN mode or the differential pressure mode.

The 'differential pressure' shown in the lower part of FIG. 2 is an item showing the present differential pressure value.

The 'Particle (A)' shown at the bottom of FIG. 2 is an item showing the number of particles (or particle concentration) of the current A group.

The 'Particle B' shown in the lower part of FIG. 2 is an item showing the number of particles (or particle concentration) of the current B group.

FIG. 3 shows a screen for monitoring the operation status and changing the speed of the interlocking FFU in the touch screen.

In FIG. 3, the red activated portion in the center is examined.

Among the items, 'START FFU' indicates the ID of the corresponding FFU selected for monitoring the operation status and changing the speed.

Among the items, 'END FFU' indicates the last ID of the FFU to be controlled.

Among the items, 'PV' represents the current speed of the corresponding FFU, and 'SV' among the items represents the set speed of the corresponding FFU.

'ALARM' indicates the alarm status of the corresponding FFU.

Among the items, 'RUN MODE' indicates the operation mode (Local / Remote) of the multifunctional air conditioning control unit connected to the corresponding FFU.

'CLOSE' among the items corresponds to closing the active screen for setting the corresponding control command (same as the confirmation button of the set value).

As a specific example, if only the second FFU is selected, touching the object (FFU) marked with [02] sets START FFU to 2 and END FFU to 2 as well. In the above state, set SV or ALARM reset and then touch CLOSE button.

As another specific example, when setting [03] to [10] FFU, touching [03] FFU sets 'START FFU' to 3 and displays END FFU to 3 but sets 'END FFU' to 10 After inputting and setting, set SV and / or 'ALARM reset' and touch 'CLOSE' button.

Fig. 4 shows the monitoring of the operation status and the change of the speed of 32 fans of the lower exhaust (EXHAUSTER).

In FIG. 4, "START FAN" represents the ID of the corresponding EXHAUSTER FAN, and "END FAN" represents the last ID of the EXHAUSTER FAN to be controlled.

'PV' indicates the current speed of the corresponding EXHAUSTER FAN, and 'SV' indicates the set speed of the corresponding EXHAUSTER FAN.

'ALARM' indicates the alarm state of the corresponding EXHAUSTER FAN and 'RUN MODE' indicates the operation mode (Local / Remote) of the multifunctional clean air control unit connected to the corresponding EXHAUSTER FAN.

'CLOSE' corresponds to closing the screen after setting the corresponding control command (same as the confirmation button of the setting value).

More specifically, As an example, if you want to control only the [02] ID of EXHAUSTER FAN, touch EXHAUSTER FAN of [02] ID on the screen, 'START FAN' is set to 2 and 'END FAN' is also set to 2. In this state, set 'SV' or 'ALARM reset' and touch 'CLOSE'.

As another example, if you want to control setting from [03] ID FAN to [10] ID FAN, touch [03] ID FAN on the screen and set 'START FAN' to 3 and 'END FAN' to 10 After setting 'SV' or 'ALARM reset', touch 'CLOSE' to exit.

5 will be described.

The screen of FIG. 5 can confirm and change various setting values for the interlocking operation, and the items are shown in FIG.

Look at each item on the screen.

'System setting' is used to set the FFU ID, program version and FFU quantity of the multi-function clean air control unit.

'Help' provides basic help for the multifunctional clean air control unit and tips for each item.

'Administrator setting' appears only at login with administrator password. The administrator can set the differential pressure interlock P.I.D and set differential pressure offset.

In the differential pressure interlock setting (mode), items related to differential pressure interlock can be set.

Door interlock setting (mode) can set door interlock related items.

The particle interlock setting (mode) is used to set the particle interlock related items.

6 is a screen for setting the multifunctional clean air conditioning control apparatus.

In Fig. 6, ID is the ID of the multifunctional clean air conditioning control device. The ID of the multi-function clean air control unit can be changed by the setting switch on the back of the product.

Among the displayed items, 'LCD BOARD' refers to the program version of LCD Board.

Among the displayed items, 'Main BOARD' refers to the program version of the Main Board.

'Password' means change of the normal user LOGIN password.

The "maximum number of FFUs" represents the total number of FFUs to be controlled.

'EXHAUSTER maximum quantity' means the total quantity of the lower exhaust (EXHAUSTER) to be controlled.

The maximum timeout means the maximum number of communication errors between the multifunctional clean air control unit and the FFU rotation motor controller.

The 'A group range' means the FFU range to be divided into A groups when the group is divided.

'Differential pressure interlock group' refers to the group that uses the differential pressure interlock and the group to which the differential pressure interlock is to be applied.

7 shows a screen for the differential pressure interlocking setting.

Let's look at each item displayed on the screen.

The target (set point) differential pressure represents the target (set point) differential pressure value of the differential pressure interlock. Specifically, it can be an outside air and a clean room, and can be group A and group B.

The 'allowable range of differential pressure fluctuation' means the tolerance of the target differential pressure.

'Differential pressure tube length' means the length of the tube connected to the multi-function clean air control unit.

The 'differential pressure error duration' means the time from when the current differential pressure value measured in real time is detected to depart from the set differential pressure allowable range to when the alarm is generated.

'FFU control upper limit' means the maximum FFU driving speed set during the differential pressure interlocking, and 'FFU control lower limit' means the lowest FFU driving speed set when the differential pressure is interlocked.

The 'differential pressure interlocking setting' displayed at the bottom of the screen moves to the differential pressure interlocking setting screen when touching and the 'interlocking door setting' displayed at the bottom of the screen moves to the door interlocking setting screen. Fig. 8 shows a screen for the door interlocking setting mode.

In Fig. 8, each item displayed on the screen is examined.

The 'door interlocking' displayed on the screen can set whether or not the door interlocking of group A is used or not. Items 2 and 3 are deactivated when "Unused" is selected.

Among the displayed items, 'door setting delay time' means the duration of the door interlocking of the A group.

Among the displayed items, the 'door interlock setting value' is the speed (SV) value of the corresponding FFU when the door of group A is interlocked, and the unit is rpm.

In Fig. 8, the B group items displayed on the right side are also the same as those described in the A group.

The "particle interlock setting" displayed at the bottom of the screen moves to the particle interlock setting screen when touching. Fig. 9 shows a screen for particle interlocking setting.

Referring to FIG. 9, the 'particle interlocking' is an item for setting use or nonuse of particle interlocking of group A, and items 2, 3, 4 and 5 below are disabled when not used.

'Particle interlock start count' corresponds to the number of particles (particle concentration) at which particle interworking of group A starts. Means the upper limit value of the allowable particle concentration, which can be set.

'Number of particle interlocking ends' means the number of particles whose particle interlocking of group A ends. This can be set.

'Particle interlock setting value' is the speed (SV) of the FFU when particles of A group are interlocked, and is expressed in rpm. This is a configurable value.

The 'particle setting delay time' means a time when the particles are operated in the 'particle interlocking set value' when the particles of the A group are interlocked.

The B group items shown on the right side in FIG. 9 are also the same as those described in the A group.

The protection scope of the present invention includes all the technical configurations in which the hardware and software (control program) described above are interlocked with each other.

The numerical values set forth herein are just examples, and these numerical values can be changed according to the requirements of the clean room, and these changes are also within the scope of the present invention.

In the present invention, a differential pressure sensor is installed to measure the difference between the pressure in the outside of the clean room and the inside pressure, so that the internal air pressure is always kept higher than the external air pressure by a set value. If an abnormality is detected, the number of revolutions of the FFU is increased to quickly remove the particles. The clean room can be divided into one or more groups, and each group can be controlled to have different differential pressure and particle concentration. Function control device that can be controlled to be linked with each other, so that it can be divided into one or more groups for control, energy saving is possible, and in the case of a small scale, the control is possible in the industrial field.

Claims (10)

A multifunctional clean air conditioning control device capable of group control,
A touch screen positioned on the front surface for displaying status and operation states of the plurality of FFUs;
A differential pressure sensor for detecting a difference between the outside air pressure and the clean room interior air pressure;
A contact sensor installed at one side of the door to detect whether the door is opened; And
A control program configured to control and maintain the interior of the clean room in a predetermined pressure range in conjunction with a differential pressure sensor and a contact sensor, and a microprocessor for executing a control program,
A signal detected by a contact sensor installed at one side of the door is transmitted to a digital input terminal, and the FFU is controlled at a set speed according to door opening and closing,
The inside of the clean room is divided into one or more groups to set and control the respective conditions including differential pressure, particle concentration and door interlocking to meet the conditions required by the respective groups,
Select one of the remote mode and local mode,
If the remote mode is selected, priority is set to the upper host, so that it is impossible to change the set value in the local mode,
The multifunctional clean air conditioner control device has priority of setting and operation when the local mode is selected, and the host can only monitor the status of each FFU controller. The method according to claim 1,
The multifunctional clean air conditioning control device is provided with a particle sensor for detecting the particle concentration inside the clean room at one side of the clean room,
A multi-function clean air conditioning control device configured to maintain the particle concentration inside the clean room at a set allowable range in conjunction with a particle sensor. The method according to claim 1,
The multifunctional clean air conditioning control device is configured to attach a contact sensor to one side of the door and transmit a signal to the digital input terminal so that the FFU is controlled at a speed set in accordance with door opening and closing. delete The method according to any one of claims 1 to 3,
The multifunctional clean air conditioning control device is configured to operate the fan for the lower exhaust using the input contact signal of the digital input terminal,
When the contact point is turned on by the input signal inputted to the digital input terminal, the corresponding fan (FAN) of the lower exhaust operates to control at the set speed (rpm)
And the corresponding fan (FAN) of the lower exhaust is controlled to be zero when the contact is turned off. The method according to any one of claims 1 to 3,
In the differential pressure interlocking setting mode of the multifunctional clean air conditioning control device, the target differential pressure value of the differential pressure interlocking is set, the allowable range of the target differential pressure is set,
And setting the maximum FFU drive speed and the lowest FFU drive speed when the differential pressure is interlocked. The method according to any one of claims 1 to 3,
The door interlocking mode of the multifunctional clean air control apparatus sets the use or nonuse of door interlocking for each group,
Wherein the speed of the FFU of the group is set at the door interlocking set value and the duration of the door interlocking is set and inputted at the door setting delay time when the door is interlocked. The method according to any one of claims 1 to 3,
The particle interlocking mode of the multifunctional clean air control apparatus sets the use or nonuse of particle interlocking per group,
Sets the particle interlock start count at which the particle in the group is started,
The number of particle interlocking ends for ending the particle interlocking of the group is set,
The multi-functional clean air control unit is configured to set the FFU speed of the group when the particles are interlocked. delete The method according to any one of claims 1 to 3,
The multifunctional clean air conditioning control apparatus is configured such that the differential pressure value measured by the differential pressure sensor is within the tolerance range of the differential pressure fluctuation with reference to the set differential pressure and the difference between the maximum and minimum values of the rotational speeds (rpm) The control unit determines that the differential pressure is stabilized when the differential pressure is maintained within 20 rpm for 30 seconds so that the differential pressure interlocking is successful and the differential pressure interlocking is stopped.

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