JP3690412B2 - Equipment control equipment - Google Patents

Description

  The present invention relates to a control device for equipment.

Recently, an air conditioning system as shown in FIG. 3 has been proposed (for example, see Japanese Patent Application No. 2003-1000026).
The air conditioning system shown in FIG. 1 mainly includes a building management central monitoring panel (higher system) 12, an air handling unit 14, and a VAV (Variable Air Volume). The building management central monitoring panel 12 and the air handling unit 14 are connected via a communication line 10 compatible with an open net, and the VAV 16 is connected to the air handling unit 14 via a local communication line 20.

  An object of the present invention is to provide a control device capable of operating equipment such as VAV with high reliability in an air conditioning system as shown in FIG.

The equipment control apparatus according to claim 1 is a control apparatus that controls equipment by being connected to an upper equipment management apparatus via a communication line of a predetermined equipment network, and includes a first communication connection section, a second communication equipment, A communication connection unit, a reception unit , a storage unit , an information abnormality determination unit , and a device control unit are provided. The first communication connection unit is a connection unit for performing first communication with the facility management apparatus, and corresponds to the facility network. The second communication connection unit is a connection unit for performing second communication with the facility device, and corresponds to the facility network. Receiver, the essential control information is essential information serving to control the equipment via the first communication connection unit from the equipment management device, and receives from the facility device via the second communication connection. The storage unit stores control regulation information immediately before power-off. The “control regulation information” referred to here is information that regulates whether control of the equipment is permitted or prohibited. Note that the “power shutoff” mentioned here includes shutoff due to a power failure. The information abnormality determination unit determines whether the essential control information received by the reception unit is abnormal for a predetermined time after the power is turned on. The device control unit refers to the control regulation information stored in the storage unit when the power is turned on, and if the essential control information is determined to be normal by the information abnormality determination unit when a predetermined time elapses , the device control unit controls equipment based on information, if the essential control information in the information abnormality determination unit upon elapse of a predetermined time is determined to be abnormal, after a predetermined time, controls the equipment based on the substitute control information To do. The “alternative control information” here refers to control information prepared as an alternative to the essential control information. In addition, “turning on the power” here includes not only when the power is turned on but also when the power is restored after a power failure.

Here, for a predetermined time after the power is turned on, the information abnormality determination unit determines whether the essential control information received by the reception unit is abnormal. Then, when the device control unit refers to the control regulation information stored in the storage unit when the power is turned on, and it is determined that the essential control information is normal in the information abnormality determination unit when a predetermined time has elapsed, Equipment equipment is controlled based on the essential control information, and when the information abnormality determination unit determines that the essential control information is abnormal when the predetermined time has elapsed, after the predetermined time has elapsed, the equipment equipment based on the alternative control information To control. For this reason, even if abnormality arises in an equipment management apparatus or equipment, operation of equipment can be performed. Further, the present control device does not start normal operation unless the essential control information is determined to be normal. Therefore, the present control apparatus can perform reliable control without waste without erroneous determination on the equipment. As a result, the present control device can operate equipment with high reliability.

The equipment control device according to claim 2 is the equipment control device according to claim 1, and there are a plurality of types of essential control information. In addition, when the abnormality determining unit determines that at least one type of essential control information is abnormal when the predetermined time elapses, the device abnormality determining unit performs the information abnormality determining unit after the predetermined time has elapsed. The control corresponding to the essential control information determined to be abnormal is prohibited, and only the control corresponding to the essential control information determined to be normal in the information abnormality determination unit is performed.

The equipment control device according to claim 3 is the equipment control device according to claim 1 or 2, wherein the equipment control section stores the power shut-off stored in the storage section when the power is turned on. If the control regulation information immediately before is information that regulates prohibition of control of the equipment and the essential control information is judged to be abnormal by the information abnormality judgment unit when a predetermined time elapses, the control regulation information is Control is performed by replacing it with information that prescribes permission of control.

The equipment control device according to claim 4 is the equipment control device according to any one of claims 1 to 3, wherein the information abnormality determination unit is configured such that the essential control information is abnormal even after a predetermined time has elapsed. Determine if there is. Moreover, an apparatus control part starts control of an equipment apparatus based on essential control information, when it determines with abnormality being normal in the information abnormality determination part after progress for a predetermined time.

  The control apparatus for equipment according to claim 1 can operate the equipment with high reliability.

<Configuration of air conditioning system>
FIG. 1 and FIG. 2 show an air conditioning system 13 including a plurality of equipment devices including a controller 31 according to an embodiment of the present invention. This air conditioning system 13 is a package system in which the air han 14, the VAV 16 and the exhaust fan 51 are made into one pack, and the control in the pack can be completed by the controller 31 in the air han 14. For this reason, it is possible to reduce construction costs such as trial operation adjustment when connecting to a BAS (building automation system) which is a host system. The controller 31 of the air conditioning system 13 is connected to the host system via the LonWorks network.

  The air han 14 is an air conditioner unit that has a main function of cooling or warming air supplied to the VAV 16 by obtaining cold water or hot water from a heat source device (not shown) and also has a humidifying function. The air han 14 includes a cooling unit 41, a heating unit 42, and a humidifying unit 43. The cooling unit 41 is supplied with cold water having a flow rate adjusted by the cold water valve 44. Hot water having a flow rate adjusted by the hot water valve 45 is passed through the heating unit 42. The humidifying unit 43 has a plurality of nozzles and sprays the steam adjusted by the humidifying valve 46.

  Further, a controller 31 for controlling the valves 44, 45, 46, fans 47, 51, dampers 48, 49, 52, etc. of the air han 14 is disposed in the air han 14. The controller 31 includes a device control unit 33, a communication unit 32, and an information abnormality determination unit 34. The device control unit 33 controls the VAV damper 62 via the VAV controller 61 of the VAV 16 described later. The communication unit 32 receives room temperature data from the VAV 16. The information abnormality determination unit 34 includes various data values (supply air temperature setting value, supply air dew point temperature setting value, outside air measurement temperature value, outside air measurement humidity value, VAV indoor measurement temperature value, VAV required air volume value, and VAV measurement described later. It is determined whether or not the air volume value is within a normal range.

  An air supply fan 47 for sending out air conditioned by the cooling unit 41, the heating unit 42, and the humidifying unit 43 to the VAV 16, and an exhaust fan 51 for exhausting air from the room 80, the hallway, the toilet, etc. The inverter is controlled by 31. Further, the outside air introduction damper 48 for introducing outside air, the return air damper 49 provided in the duct for returning the air in the room 80 to the upstream side such as the cooling unit 41, and the exhaust amount are adjusted on the upstream side of the exhaust fan 51. The opening of the exhaust damper 52 is also adjusted by the controller 31 in various controls described later.

  The VAV 16 is a facility device that adjusts the amount of air-conditioned air sent by the air supply fan 47 in the air han 14 and blows it out to the room 80. Here, a plurality of VAVs 16 are connected to one air hanger 14. The VAV 16 includes a VAV controller 61, a VAV damper 62, a temperature sensor 63, an air volume sensor (not shown), and the like. The VAV controller 61 is connected to the controller 31 via the local communication line 20, receives the command from the controller 31, adjusts the opening degree of the VAV damper 62, and transmits the state of the VAV damper 62 and the like to the controller 31. . The connection between the VAV controller 61 and the controller 31 will be described in detail later.

<Control of air conditioning system>
The controller 31 in the air han 14 transmits control data to the VAV controller 61 and receives monitoring data transmitted from the VAV controller 61. The control data includes start / stop commands, room temperature settings, air conditioning mode commands, and the like. The monitoring data is data such as the indoor measured temperature, the VAV state, the VAV required air volume, the VAV measured air volume, and the VAV opening state.

  The controller 31 receives status data from the valves 44, 45, 46, the dampers 48, 49, 52 and the fans 47, 51, as well as a differential pressure switch and a dew point temperature provided in the air hanger 14. Predetermined data is sent from a transmitter, thermistor, humidity sensor, etc. (not shown). Based on these data, the controller 31 sends control command data to the valves 44, 45, 46, the dampers 48, 49, 52, the fans 47, 51, and the VAV controller 61 in the following various controls.

[Various controls by the controller 31]
In the air conditioning system 13, the controller 31 performs supply air temperature control, supply air dew point temperature control, warm-up control, supply air volume control, supply air temperature load reset control, outside air cooling control, and the like. As will be described later, the controller 31 performs various controls according to commands from the equipment management device 12 after being connected to the host equipment management device 12 via the communication line 10 and the gateway 12a of the LonWorks network. Even when the controller 31 is not connected to the host system, the controller 31 can execute various controls independently. In this case, various controls are executed in accordance with operation inputs to the controller 31 from a remote controller (not shown).

  In the supply air temperature control, PID control of the cold water valve 44 and the hot water valve 45 is performed according to the supply air temperature. In the supply air dew point temperature control, PID control of the humidification valve 46 is performed based on the supply air dew point temperature, and humidification is prohibited at low temperatures. In the warming-up control, the outside air damper 48 and the exhaust damper 52 are closed in order to perform precooling / preheating when starting up. In the supply air volume control, the required air volume is calculated by summing the air volume setting values of each VAV 16, and the rotation speed control of the supply fan 47 is performed based on the required air volume. Further, the rotation speed of the air supply fan 47 is corrected as appropriate based on the opening degree of the VAV 16. In the supply air temperature load reset control, the supply air temperature setting value is automatically changed based on the control state (air volume setting value / room temperature) of each VAV 16 and the control state of each part of the air hanger 14. In the outside air cooling control, when it is effective to take in outside air, proportional control of each damper is performed by the supply air temperature.

<Connection between Controller 31 and VAV Controller 61 in Airhan>
The VAV controller 61 includes a communication IC corresponding to a LonWorks network called a “neuron chip”, and is connected to the local communication line 20 by a connection port 61a using the network function of the communication IC. That is, the VAV 16 is a facility device corresponding to the LonWorks network that is becoming an international standard for open control networks.

  The local communication line 20 is a twisted pair cable extending from the local communication connection port 31b among the two connection ports 31a and 31b of the controller 31. Communication using the local communication line 20 is based on the LonTalk protocol. Therefore, the VAV 16 can be adopted regardless of the manufacturer as long as it is compatible with the LonWorks network.

  The controller 31 includes the above-described local communication connection port 31b separately from the upper communication connection port 31a for communication with the higher system. Therefore, the VAV 16 is locally connected to the controller 31 in the air han 14 without going through the communication line 10 of the BAS LonWorks network, and constitutes the air conditioning system 13 in one pack with the air han 14.

<BAS including air conditioning system>
As described above, the air conditioning system 13 including the controller 31 can control and monitor the air han 14 and the VAV 16 independently. However, when viewed from a host system called BAS, it is one of many subsystems. BAS is an open system using the technology of the LonWorks network, and has a configuration in which a plurality of subsystems such as an air conditioning system 13 and a building management facility management device 12 are connected to a communication line 10 via a gateway 12a. It has become. Subsystems such as the air conditioning system 13 are controlled and monitored by the facility management apparatus 12.

  The controller 31 of the air conditioning system 13 is connected to the communication line 10 of the LonWorks network through a higher communication connection port 31a for communication with the higher system. The host communication connection port 31a is a connection port that uses the network function of the communication IC corresponding to the LonWorks network, like the local communication connection port 31b and the connection port 61a of the VAV controller 61 described above. The controller 31 connected to the facility management apparatus 12 via the communication line 10 and the gateway 12a by the upper communication connection port 31a exchanges the following information with the facility management apparatus 12.

  First, the controller 31 receives a command to the air han 14 or VAV 16 sent from the facility management apparatus 12 (see the white arrow 91 in FIG. 1). Specific commands include a start / stop command for the air hanger 14, a warm-up command, a supply air temperature setting command, a supply air dew point temperature setting command, an outside air cooling command, an indoor temperature measurement command, and the like. In response to such a command, the controller 31 controls the air han 14 and the VAV 16 and collects necessary monitoring data.

  In addition, the controller 31 transmits monitoring data related to the state and settings of the air han 14 and the VAV 16 to the facility management apparatus 12 (see the white arrow 92 in FIG. 1). Specifically, operation mode state, supply fan operation state, supply fan alarm state, supply air inverter output, supply air temperature measurement value, return air damper opening, cold water valve opening, indoor measurement temperature, VAV state, etc. Monitoring data.

<Air conditioning system data storage>
The controller 31 has a control board (not shown). An EEPROM is provided on the control board. In the EEPROM, the operation / stop state data of the air conditioning system 13 immediately before the controller 31 is turned off or immediately before a power failure, the supply air temperature setting value, the warm-up permission / prohibition state data, the schedule setting state data, and the supply air temperature load reset permission / Prohibition state data is stored and saved. The warm-up permission / prohibition state data is data indicating permission / prohibition of warm-up control. The supply air temperature load reset permission / prohibition state data is data indicating permission / prohibition of supply air temperature load reset control.

<Air conditioning system status when the controller power is turned on or power is restored>
On the control board of the controller 31, an operation setting switch at power-on / power failure / power recovery is provided. When this power-on / power failure / power recovery operation setting switch is set to ON in advance, the controller 31 reads various data stored in the EEPROM at power-on or power failure recovery and immediately before power-off. Or return to the state just before the power failure. That is, if the operation / stop state data is in the operating state immediately before the power is shut off or immediately before the power failure, the controller 31 returns to the operating state when the power is turned on or when the power is restored. If the operation / stop state data is in a stop state immediately before the power is shut off or immediately before a power failure, the controller 31 returns to the stop state when the power is turned on or when the power is restored. On the other hand, when this power-on / power failure / recovery operation setting switch is set to OFF, the controller 31 stores data other than the operation / stop state data stored in the EEPROM when the power is turned on or when power is restored. Always read and return in a stopped state.

<Control of the air conditioning system after the controller power is turned on or after a power failure / restoration>
When the controller 31 returns to the operating state after the power is turned on or after the power failure is restored, or when the operation command is received after the power is turned on or after the power failure is restored, the controller 31 performs only the air blowing operation for the predetermined time TP and the air conditioning system 13. Make it. The controller 31 receives various data transmitted from the equipment management device 12 and the VAV controller 61 within the predetermined time TP, and all data values required for the operation of the air conditioning system 13 are stored in advance. Determine if it is within the specified normal range. When it is determined that all the data values are within the normal range at the time when the predetermined time TP has elapsed, the controller 31 performs the normal operation of the air conditioning system 13 by various control methods after the predetermined time TP has elapsed. Control driving. On the other hand, when it is determined that any data value is not within the normal range at the time when the predetermined time TP has elapsed, the controller 31 operates the air conditioning system 13 by the limited control method after the predetermined time TP has elapsed. Control.

[Limited control method]
(If there is an error in communication with the equipment management device)
The controller 31 determines that any one of the operation / stop state data, the supply air temperature setting data, the supply air dew point temperature setting data, the outside air measurement temperature data, and the outside air measurement humidity data is not within a predetermined normal range. If determined, the facility management device 12 is notified of the occurrence of the abnormality. Thereafter, the controller 31 cancels the abnormality when all these data values fall within the normal range. Note that the initial value of the above data is Invalid, and this Invalid value is considered out of the normal range.

The controller 31 automatically determines the supply air temperature setting value when the power is turned on or when the power is restored, and holds that value until a predetermined time TP has elapsed. If the supply air temperature setting value does not fall within the normal range before the predetermined time TP elapses, the controller 31 determines the supply air temperature setting value according to the flowchart shown in FIG.
4, when the controller 31 starts the operation of the air conditioning system 13, in step S21, the controller 31 confirms the state of the supply air temperature load reset permission / prohibition state data. When the power-on / power failure / recovery operation setting switch is set to ON, the EEPROM supply temperature load reset enable / disable status data indicates that the power-on / power failure / recovery operation setting switch is OFF. When set, the air supply temperature load reset permission / prohibition state data from the facility management device 12 is referred to. As a result of the confirmation in step S21, if the supply air temperature load reset permission / prohibition state data is in a permission state, the process proceeds to step S23. As a result of the confirmation in step S21, if the supply air temperature load reset permission / prohibition state data is in a prohibited state, the process proceeds to step S22. In step S22, the controller 31 reads the supply air temperature load reset permission / prohibition state data as a permission state. In step S23, the controller 31 automatically determines the supply air temperature setting value. Then, the controller 31 performs a supply air temperature load reset process thereafter.

  If the supply air temperature set value from the facility management device 12 falls within the normal range and the supply air temperature load reset permission / prohibition state data is in the prohibited state, the controller 31 supplies air to the facility management device 12. Follow the temperature setpoint. In step S21, it is confirmed that the supply air temperature load reset permission / prohibition state data is in a prohibited state, and the supply air temperature set value from the facility management device 12 falls within the normal range on the way, and the supply air temperature load reset permission is permitted. If the forbidden state data is in the permitted state, the controller 31 continues the supply air temperature load reset process as it is. Further, in step S21, it is confirmed that the supply air temperature load reset permission / prohibition state data is in the permitted state, and the supply air temperature load reset permission / prohibition state data is changed from the permitted state to the prohibited state on the way. Even if the supplied air temperature setting value is not within the normal range, the controller 31 continues the supplied air temperature load reset process.

If the supply air dew point temperature set value does not fall within the normal range before the predetermined time TP elapses, the controller 31 unconditionally prohibits the humidification control. Thereafter, when the supply air dew point temperature set value falls within the normal range and satisfies all the humidification conditions, the controller 31 starts the humidification control.
The controller 31 unconditionally prohibits the outside air cooling control if either the outside air measured temperature value or the outside air measured humidity value does not fall within the normal range before the predetermined time TP elapses. After that, when all the data values fall within the normal range and satisfy all the outside air cooling conditions, the controller 31 starts the outside air cooling control.

(If there is an error in communication with the VAV controller)
If any of the VAV indoor measured temperature value, the VAV required air volume value, and the VAV measured air volume value does not fall within the normal range before the predetermined time TP elapses, the controller 31 regards the VAV 16 as an abnormality and determines from the control target. exclude. At this time, the controller 31 notifies the facility management apparatus 12 of the occurrence of an abnormality. Thereafter, the controller 31 cancels the abnormality when all these data values fall within the normal range. When any of the VAVs 16 is considered abnormal, the supply air volume is determined on the assumption that the required air volume value of the VAV 16 is equal to the minimum air volume value. In addition, when all values of the VAV indoor measured temperature value, the VAV required air volume value, and the VAV measured air volume value fall within the normal range at a certain time after the predetermined time TP has elapsed, the controller 31 automatically performs the VAV 16 in real time. Return to control and reflect each control. When all the VAVs 16 are regarded as abnormal, the controller 31 abnormally stops the air conditioning system 13. In addition, after the abnormal stop, the controller 31 does not operate the air supply fan 47 until all of the VAV indoor measured temperature value, VAV required air volume value, and VAV measured air volume value of any VAV 16 are within the normal range. (Even if the operation command is received from the facility management device 12, the air supply fan 47 is not operated). In addition, when the VAV indoor measured temperature value, VAV required air volume value, and VAV measured air volume value of one VAV 16 are all within the normal range in the air supply air volume control, the rotation speed of the air supply fan 47 is corrected. This is performed based on the opening degree of the one VAV 16. The opening degree of the VAV 16 regarded as abnormal is not adopted for correcting the rotation speed of the air supply fan 47. Further, when calculating the sum of the VAV required air volume, the minimum air volume is used for VAV 16 whose required air volume value is not in the normal range.

<Data processing after a predetermined time TP has passed>
The controller 31 monitors supply air set temperature data, supply air dew point temperature data, outside air measurement temperature data, outside air measurement humidity data, VAV indoor measurement temperature data, VAV required air volume data, and VAV measurement air volume data after a predetermined time TP has elapsed. If the data value once falls within the normal range and then the data value deviates from the normal range, processing for each abnormal data is performed. The purpose of this processing is to prevent control hunting by immediately preventing the abnormal value from being adopted when the set value fluctuates due to noise or the like while the controller 31 is energized.

(Supply air set temperature data and supply air dew point temperature data)
The supply air set temperature data and the supply air dew point temperature data change within the normal range, and if the value after the change is monitored for 60 seconds and is constant, the values are adopted. When there is a change within 60 seconds, time measurement is started from that point and monitoring is performed again. Further, the data value before the change is used as the control value until the data value is determined. After the predetermined time TP has elapsed, the abnormality is determined, and thereafter, if the data value falls within the normal range and the data value is monitored for 60 seconds and is constant, the data value at that time is set as the set temperature. In addition, after the data value deviates from the normal range, if the data value is monitored for 60 seconds and does not return to the normal range, it is determined as abnormal and the data value before the abnormality is determined is adopted (that is, the abnormal data is used). ignore). Thereafter, if the data value falls within the normal range and the data value is monitored for 60 seconds and is constant, the data value is updated.

(Outside air measurement temperature data and outside air measurement humidity data)
Regarding the outside air measurement temperature data and the outside air measurement humidity data, the abnormality is determined when the data value deviates from the normal range for 60 seconds. If the data value is maintained within the normal range for 60 seconds, the abnormality is released. When the abnormality is confirmed, the controller 31 notifies the facility management apparatus 12 of the occurrence of the abnormality. In addition, if any of these data values deviate from the normal range and the start condition of the outside air cooling control is satisfied so that the outside air cooling operation does not hunt, the controller 31 performs the prohibition determination on the outside air cooling control for 180 seconds. Do not. Further, when any of the data values deviates from the normal range during the outside air cooling control, the controller 31 prohibits the outside air cooling control after 3 minutes have elapsed from the time of the departure. After that, if both the data values are within the normal range and the data values are constant for 60 seconds or more, the start determination of the outside air cooling control is performed at the time when the 60 seconds have elapsed. In addition, when the controller 31 receives an outside air cooling prohibition command from the facility management device 12 during the outside air cooling control, the controller 31 stops the outside air cooling control in real time. After that, when the controller 31 receives an outside air cooling permission command from the facility management device 12 and starts the outside air cooling control, the timer for 180 seconds is reset.

(VAV indoor measurement temperature data, VAV required air volume data and VAV measurement air volume data)
The VAV indoor measured temperature data, the VAV required air volume data, and the VAV measured air volume data are the same as the processes performed in [limited control method] (when there is an abnormality in communication with the VAV controller).
<Characteristics of the air conditioning system of this embodiment>
(1)
In the air conditioning system 13 according to the present embodiment, when the power is turned on or when the power is restored, the information abnormality determination unit 34 of the controller 31 receives the air supply temperature set value, the supply air dew point temperature received by the communication unit 32. It is determined whether the set value, the outside air measurement temperature value, the outside air measurement humidity value, the VAV indoor measurement temperature value, the VAV required air volume value, and the VAV measurement air volume value are within a normal range. When the information abnormality determination unit 34 determines that the above value is not in the normal range, the device control unit 33 controls the VAV 16 by a limited control method. For this reason, even if an abnormality occurs in the facility management device 12 or the VAV 16, the air-conditioning operation can be performed. Further, in the air conditioning system 13, the normal operation is not executed unless it is determined that all the data are within the normal range. Therefore, in this air conditioning system 13, reliable control without waste can be realized without erroneous determination. As a result, the air conditioning system 13 can realize a highly reliable operation.

(2)
In the air conditioning system 13 according to the present embodiment, since any of the connection ports 31a and 31b of the controller 31 corresponds to the LonTalk protocol of the LonWorks network that is an open network, the connected equipment (VAV) is not limited to the manufacturer. It can be used anytime, and it can be adopted by any manufacturer as long as it is compatible with the LonTalk protocol when replacing or adding equipment in the future.

(3)
The air conditioning system 13 according to the present embodiment is made into one pack and can operate separately from the host system using the LonWorks network. Therefore, even when a failure occurs in a higher-level system such as the equipment management apparatus 12 or when a failure occurs on the communication line 10 of the LonWorks network, for example, a command is sent directly to the controller 31 via the remote controller or the like. Thus, the air conditioning system 13 can be operated normally.

<Modification>
(A)
In the above embodiment, the present invention is applied to the air conditioning system including the air han 14 and the VAV 16, but the central system including the heat source unit and the secondary unit, the air conditioning system including the air han and the floor fan unit, and the outdoor unit. In addition, the present invention can be similarly applied to a packaged air conditioner system including indoor units. In any case, if a master unit corresponding to the controller that performs the main control is provided with two connection ports, one of the connection ports is used to locally connect a terminal device (slave unit) subordinate to the master unit. The effect similar to the air conditioning system of said embodiment can be enjoyed.

(B)
In the above embodiment, only the VAV 16 is controlled. However, instead of or in addition to this, the fan coil unit, the exhaust fan 51, and the like may be controlled.

  The control apparatus for equipment according to the present invention can operate equipment with high reliability and can be applied to an air conditioning system or the like.

1 is a schematic diagram of an air conditioning system and a building network system including a controller according to an embodiment of the present invention. The instrumentation block schematic of an air conditioning system. Schematic of the conventional air conditioning system on a building network system. The flowchart showing the handling of supply air set temperature data when communication with an equipment management apparatus is impossible.

Explanation of symbols

10 Communication line of LonWorks network 12 Equipment management device 16 VAV (equipment equipment)
20 Local communication line (dedicated line)
31 Controller (control device)
31a Connection port for higher-level communication (first communication connection unit)
31b Connection port for local communication (second communication connection part)
32 Communication unit (receiver)
33 Device control unit 34 Information abnormality determination unit

Claims (4)

A control device (31) connected to a higher-level equipment management device (12) by a communication line (10) of a predetermined equipment network and controlling the equipment equipment (16),
A first communication connection unit (31a) corresponding to the facility network for performing first communication with the facility management device;
A second communication connection unit (31b) corresponding to the facility network for performing second communication with the facility device;
The essential control information essential information serving to control the equipment, through the equipment management apparatus of the first connecting communication unit from, and receives via the second communication connection unit from the equipment A receiver (32);
A storage unit that stores control regulation information that is information that prescribes whether to allow or prohibit control of the facility device immediately before power-off,
An information abnormality determination unit (34) for determining whether the essential control information received at the reception unit is abnormal for a predetermined time after the power is turned on;
If the essential control information is determined to be normal by the information abnormality determination unit when the predetermined time elapses with reference to the control regulation information stored in the storage unit when the power is turned on, the essential controls the equipment based on the control information, if the essential control information upon elapse of the predetermined time in the information abnormality determination unit is determined to be abnormal, after the lapse of the predetermined time, the essential control information A device control unit (33) for controlling the facility device based on alternative control information prepared as an alternative to
Ru with a control device of the equipment (31). The essential control information has a plurality of types,
The device control unit, when the abnormality determination unit determines that at least one type of essential control information is abnormal when the predetermined time has elapsed, and after the elapse of the predetermined time, the information Prohibiting the control corresponding to the essential control information determined to be abnormal in the abnormality determination unit, and performing only the control corresponding to the essential control information determined to be normal in the information abnormality determination unit;
The equipment control apparatus according to claim 1. The device control unit is information that prescribes prohibition of control of the facility device and the control regulation information immediately before power-off stored in the storage unit when the power is turned on and when the predetermined time has elapsed When it is determined that the essential control information is abnormal in the information abnormality determination unit, the control regulation information is replaced with information that regulates permission of control of the facility equipment, and the control is performed.
The equipment control apparatus according to claim 1 or 2. The information abnormality determining unit determines whether the essential control information is abnormal even after the predetermined time has elapsed,
The equipment control unit starts control of the equipment based on the essential control information when it is determined that the abnormality is normal in the information abnormality determination unit after the predetermined time has elapsed.
The equipment control apparatus according to any one of claims 1 to 3.

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