CN205809665U - A kind of compressor variable frequency control system for oxygen recovery - Google Patents
A kind of compressor variable frequency control system for oxygen recovery Download PDFInfo
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- CN205809665U CN205809665U CN201620692641.2U CN201620692641U CN205809665U CN 205809665 U CN205809665 U CN 205809665U CN 201620692641 U CN201620692641 U CN 201620692641U CN 205809665 U CN205809665 U CN 205809665U
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Abstract
The utility model discloses a kind of compressor variable frequency control system for oxygen recovery, its major loop includes: three-phase air switch QF1, QF2, QF3, three A.C. contactors, three thermorelays, two frequency conversion motors M1, M2, two blower fans, aerator, two converters.External three phase mains is connected through the input of QF1 with converter one, the outfan of converter one is connected with frequency conversion motor M1, the also input through QF2 with converter two is connected, and the outfan of converter two is connected with frequency conversion motor M2, and the also main contacts through QF3 and three A.C. contactors connects.The main contacts of respectively with three A.C. contactors in one end of three thermorelays connects, the other end is connected this utility model overcomes the deficiencies in the prior art with two blower fans, an aerator respectively, ensure that Compressor Discharge Pressure is stable, make compressor adapt to the operation under the operating mode that user's gas consumption changes greatly, meet user's request.
Description
Technical field
This utility model relates to a kind of control system of gas compressor field of electrical control, particularly relates to a kind of for oxygen
The compressor variable frequency control system that gas reclaims.
Background technology
Oxygen compressor, is applied to the recovery system of oxygen gas.Admission pressure is up to 0.015Mpa, and minimum pressure connects
Nearly 0.0Mpa.Compressor Discharge Pressure arranges upper limit 3.0MPa, and the supply gas pressure of user's request maintains near 2.9MPa, supply
More stable, user's use gas tolerance changes greatly.If using traditional Control to be difficult to meet the demand of user, and frequency
Numerous startup is shut down, and it can affect motor, the service life of electrical equipment
Utility model content
The purpose of this utility model is to provide a kind of compressor variable frequency control system for oxygen recovery, described compression
Electrical-mechanical control system overcomes the deficiencies in the prior art, it is ensured that Compressor Discharge Pressure is stable, makes compressor adapt to use
Operation under the operating mode that family gas consumption changes greatly, meets user's request.
Solution of the present utility model is: a kind of compressor variable frequency control system for oxygen recovery, and it includes control
Cabinet processed, is provided with major loop in switch board and controls loop；It is characterized in that: described major loop includes: three-phase air switch
QF1, QF2, QF3, three A.C. contactors KM1, KM2, KM3, three thermorelays FR1, FR2, FR3, two frequency conversion motor M1,
M2, two blower fans m1, m2, aerator, two converters；
Wherein, external three phase mains L1, L2, L3, on the one hand through the input of three-phase air switch QF1 Yu converter one
Connecting, the outfan of converter one is connected with frequency conversion motor M1, and another aspect is defeated through three-phase air switch QF2 and converter two
Entering end to connect, the outfan of converter two is connected with frequency conversion motor M2, and another further aspect connects with exchanging through three-phase air switch QF3
The main contacts of tentaculum KM1, KM2, KM3 connects, respectively with three hot relays of the main contacts of three A.C. contactors KM1, KM2, KM3
One end of device FR1, FR2, FR3 connects, the other end of three thermorelays FR1, FR2, FR3 respectively with two blower fan m1, m2, one
Individual aerator connects
As the further improvement of such scheme, switch board panel is provided with touch screen, start button, stop button,
Scram button and alarm；Described control loop includes: PLC, touch screen, Analog input mModule, pressure transmitter, and two are unloaded
Load electromagnetic valve, two air inlet electromagnetic valves, Switching Power Supply, transformator, five auxiliary reclays KA1, KA2, KA3, KA4, KA5, two
Phase air switch QF4, cabinet fan；
Wherein, the input I0.0 of PLC connects the start button on switch board panel and remote activation button, the input of PLC
End I0.1 connects the stop button on switch board panel, and described stop button is connected with long-range stop button, the input I0.2 of PLC
Connecing the normally closed point of thermorelay FR1, the input I0.3 of PLC connects the normally closed point of thermorelay FR2, and the input I0.4 of PLC connects
Scram button, the outfan Q0.0 of PLC connects one end of auxiliary reclay KA1 coil, and the outfan Q0.1 of PLC connects auxiliary reclay
One end of KA2 coil, the outfan Q0.2 of PLC connects one end of auxiliary reclay KA3 coil, and the outfan Q0.3 of PLC connects centre
One end of relay K A4 coil, the outfan Q0.4 of PLC connects one end of auxiliary reclay KA5 coil, five auxiliary reclays
The other end of KA1, KA2, KA3, KA4, KA5 all meets 0V；Described Analog input mModule is all connected with PLC, described pressure inverting
Device is connected with analogue input template；Described touch screen and plc communication, the numerical value that PLC gathers shows on described touch screen.
Further, external two-phase power supply L1, L3 is by after two-phase air switch QF4, and wherein a phase exchanges with two
The coil of catalyst KM1, KM2, thermorelay FR3, air inlet electromagnetic valve one, air inlet electromagnetic valve two, unload electromagnetic valve one, unloading electricity
The common port of magnet valve two connects, another phase respectively with five auxiliary reclays KA2, KA3, KA4, KA5, two A.C. contactors
One end of the normally opened point of KM1, KM2 connects；The other end of the normally opened point of auxiliary reclay KA2 connects with the coil of A.C. contactor KM1
Connecing, the other end of the normally opened point of auxiliary reclay KA3 is connected with the coil of A.C. contactor KM2；Auxiliary reclay KA2, KA3 are normally opened
The other end of point is connected with the coil of A.C. contactor KM3, and the normally closed point of thermorelay FR3 connects with the coil of A.C. contactor KM3
Connect；The other end of the normally opened point of auxiliary reclay KA4 is connected with unloading electromagnetic valve one, the other end of the normally opened point of auxiliary reclay KA5
Being connected with unloading electromagnetic valve two, the other end of two normally opened points of A.C. contactor KM1, KM2 is respectively with two air inlet electromagnetic valves even
Connect；The power input of Switching Power Supply connects with transformator, the power output end output DC source of Switching Power Supply, DC source
Working power respectively as PLC, Analog input mModule and touch screen；Described alarm, described cabinet fan one end with
A wherein phase of transformator outfan connects, and wherein another phase is by the normally opened contact of two auxiliary reclays KA1, KA3 respectively
It is connected with alarm, cabinet fan.
Further, described PLC type number is S7-200-smart-ST20.
Further, described Analog input mModule model is EMAI04.
Further, described Analog input mModule is all connected by signal data line with PLC.
Further, described pressure transmitter is connected with analogue input template by holding wire.
Yet further, the PLC-CPU-485 of one end and PLC that described system employing connection connects 9 pin male joints leads to
Communication interface is connected, the other end respectively with being connected of two converters, utilize USS communication, the operational factor of converter reached
PLC, touch screen, by the operating instruction of PLC, the numerical value controlling rotating speed passes to converter.
Yet further, described pressure transmitter collects water pressure signal, discharge pressure signal, admission pressure letter
Number, it is transported to PLC, PLC by described Analog input mModule and by described Analog input mModule, the analog quantity of pressure is believed
Number it is converted into digital signal.
Further, described touch screen passes through Ethernet and plc communication.
This utility model overcomes the deficiencies in the prior art, it is ensured that Compressor Discharge Pressure is stable, makes compression function fit
Answer the operation under the operating mode that user's gas consumption changes greatly, meet user's request.
Accompanying drawing explanation
Fig. 1 is the local structural graph one of the compressor variable frequency control system for oxygen recovery of the present utility model.
Fig. 2 is the local structural graph two of the compressor variable frequency control system for oxygen recovery of the present utility model.
Fig. 3 is the local structural graph three of the compressor variable frequency control system for oxygen recovery of the present utility model.
Fig. 4 is the local structural graph four of the compressor variable frequency control system for oxygen recovery of the present utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain
This utility model, is not used to limit this utility model.
Seeing also Fig. 1, Fig. 2, Fig. 3 and Fig. 4, it is the compressor variable frequency control for oxygen recovery of the present utility model
The structure chart of system processed, owing to the structure chart of native system is huger, is divided into four parts to clearly show that each structure
Show.Compressor variable frequency control system for oxygen recovery of the present utility model includes switch board.Set in switch board
There is major loop and control loop, switch board panel is provided with touch screen, start button, stop button, scram button and warning
Device.
Described major loop mainly by three-phase air switch QF1, QF2, QF3, three A.C. contactors KM1, KM2, KM3,
Three thermorelays FR1, FR2, FR3, two frequency conversion motors M1, M2, two blower fans m1, m2, aerator, two converter groups
Become.
External 380V three phase mains L1, L2, L3 are connected with the input of converter one through three-phase air switch QF1, frequency conversion
The outfan of device one is connected with frequency conversion motor M1.External 380V three phase mains L1, L2, L3 are through three-phase air switch QF2 and frequency conversion
The input of device two connects, and the outfan of converter two is connected with frequency conversion motor M2.External 380V three phase mains L1, L2, L3 warp
The main contacts of three-phase air switch QF3 and three A.C. contactors KM1, KM2, KM3 connects, three A.C. contactor KM1, KM2,
The main contacts of KM3 respectively with three thermorelays FR1, FR2, FR3 connect, three thermorelays FR1, FR2, FR3 the most respectively with
Two blower fans m1, m2, aerator connects
It is the PLC of S7-200-smart-ST20 that described control loop is mainly by model, and touch screen, model is EMAI04
Analog input mModule, pressure transmitter, unload electromagnetic valve, air inlet electromagnetic valve, 24V Switching Power Supply, 380V becomes 220V transformation
Device, five auxiliary reclays KA1, KA2, KA3, KA4, KA5, two-phase air switch QF4, cabinet fan form.
The input I0.0 of PLC connects the start button on switch board panel and remote activation button, the input of PLC
I0.1 connects the stop button on switch board panel, and it is connected with long-range stop button, and the input I0.2 of PLC connects thermorelay
The normally closed point of FR1, the input I0.3 of PLC connects the normally closed point of thermorelay FR2, and the input I0.4 of PLC connects scram button,
The outfan Q0.0 of PLC connects one end of auxiliary reclay KA1 coil, and the outfan Q0.1 of PLC connects auxiliary reclay KA2 coil
One end, the outfan Q0.2 of PLC connects one end of auxiliary reclay KA3 coil, and the outfan Q0.3 of PLC meets auxiliary reclay KA4
One end of coil, the outfan Q0.4 of PLC connects one end of auxiliary reclay KA5 coil.
The other end of five auxiliary reclays KA1, KA2, KA3, KA4, KA5 all meets 0V, and described Analog input mModule is equal
Being connected by signal data line with PLC, described pressure transmitter is connected with analogue input template by holding wire.Pressure inverting
Water pressure signal that device collects, discharge pressure signal, boost pressure signal, be transported to PLC by Analog input mModule,
The analog signals of pressure is converted into digital signal by Analog input mModule by PLC, described touch screen by Ethernet with
Plc communication, the numerical value of collection shows on the touchscreen, and the control parameter of setting can be revised on screen.
System uses connection to connect 9 pin male joints and be connected with PLC-CPU-485 communication interface, the other end respectively with two
The 29 of converter, 30 terminals are connected, and utilize USS communication, the operational factor of converter are reached PLC, touch screen, by PLC's
Operating instruction, the numerical value controlling rotating speed passes to converter.
After external 380V two-phase power supply L1, L3 pass through two-phase air switch QF4, a wherein phase and two A.C. contactors
The coil of KM1, KM2, thermorelay FR3, two air inlet electromagnetic valves, the common port of two unloading electromagnetic valves connects, and another phase is divided
Not with five auxiliary reclays KA2, KA3, KA4, KA5, one end of the normally opened point of two A.C. contactors KM1, KM2 connects, in
Between the other end of the normally opened point of relay K A2 be connected with the coil of A.C. contactor KM1.Another of the normally opened point of auxiliary reclay KA3
End is connected with the coil of A.C. contactor KM2.The other end of the normally opened point of two auxiliary reclay KA2, KA3 and A.C. contactor
The coil of KM3 connects, and the normally closed point of thermorelay FR3 is connected with the coil of A.C. contactor KM3.The normally opened point of auxiliary reclay KA4
The other end with unloading electromagnetic valve one be connected, the other end of the normally opened point of auxiliary reclay KA5 with unload electromagnetic valve two be connected, two
The other end of the normally opened point of A.C. contactor KM1, KM2 is connected with two air inlet electromagnetic valves respectively.
The power input of described 24V Switching Power Supply connects with transformator 220V, the power output end of 24V Switching Power Supply
Output 24V DC source, 24V DC source is respectively as the working power of PLC, Analog input mModule and touch screen.Report to the police
Device, one end of cabinet fan connect with a transformator outfan 220V wherein phase, and 220V wherein another phase is continued by two centres
The normally opened contact of electrical equipment KA1, KA3 is connected with alarm, cabinet fan respectively.
Operationally, 4 QF are in make position for the present embodiment, by the download program that edits to PLC, and touch screen, they
Obtain electric operation,
On the touchscreen, in parameter setting screen, arranging chain startup and stop machine parameter, air inlet starts pressure value, and air inlet stops
Machine pressure value, vent activation pressures numerical value, pressure value, water startup pressure value, water retention machine pressure value are shut down in aerofluxus.
PID adjustment factor, P item, I item, unit duplex running switching push button, M1, M2 switching push button, data displaying picture during unit operation
In.Display admission pressure numerical value in real time, pressure at expulsion numerical value, water pressure numerical value, converter 1, converter 2, M1 rotating speed, M2 turns
Speed, M1 electric current, M2 electric current, M1 blower fan, M2 blower fan dynamic operation halted state, air inlet electromagnetic valve 1, air inlet electromagnetic valve 2, unloading electricity
Magnet valve 1, unloads electromagnetic valve 2, opens closure state.
M1, M2 run the time, and in fault picture, the fault project of monitoring, admission pressure is low, and pressure at expulsion is high, water pressure
Low, converter 1 fault, converter 2 fault, M1 blower fan transships, and M2 blower fan transships, and also sets up converter 1 failure reset button,
Converter 2 failure reset button, user's login screen, when user needs to revise parameter, by login button, this be need to authorize close
Code.To prevent unrelated person from revising parameter.
Converter uses first to be needed to arrange basic parameter, the rated frequency of motor, rated voltage, rated current, mistake
Carry electric current, minimum frequency, peak frequency, communication baud rate, address, order source, select frequency set-point, control mode etc.
Parameter, by start button, under duplex running state, it is assumed that each parameter meets entry condition, and converter 1 starts, and after 3 seconds, PLC is defeated
Going out a Q0.1 Guan Bi, KA2 coil obtains electric, and KM1 coil obtains electric, M1 fan operation, and air inlet electromagnetic valve 1 obtains electric opening, and KM3 coil obtains
Electricity, aerator runs, and after 3 seconds, converter 2 starts, and PLC output point Q0.2 closes, and KA3 obtains electric, and KM2 coil obtains electric, M2 blower fan
Running, air inlet electromagnetic valve 2 obtains electric opening, and when pressure at expulsion rises to 2.4MPa, PI regulates input, and pressure rises, and motor speed is opened
Begin to decline.
When pressure rises to 2.75MPa, converter 2 stops, and PLC output point Q0.2 disconnects, KA3 dead electricity, KM2 dead electricity, M2
Blower fan stops, and PLC output point Q0.4 closes, and KA5 coil obtains electric, and unloading electromagnetic valve 2 obtains electric opening, at this moment, only one machine
Running, capacity only has between 50 to percent 20 the percent of gross exhaust gas, when pressure at expulsion rises near 2.9MPa, single
Percent the 30 of the rotating speed of platform motor the most as little as rated speed, if at this moment gas consumption increases, during single motor rotating speed maximum, pressure
When power continues to drop to 2.75MPa, converter 2 starts automatically, to maintain pressure at expulsion between 2.9MPa to 2.75MPa.
Certainly, when gas consumption is zero, pressure at expulsion rises to 2.9MPa, and converter 1 stops, and M1 blower fan stops, PLC output point
Q0.3 closes, and KA4 coil obtains electric, and unloading electromagnetic valve 1 obtains electric opening.When converter 1 starts, unloading electromagnetic valve 1 dead electricity is closed.
More than control process, by the procedure judges in PLC, automatically run, when an error occurs, PLC output point
Q0.0 closes,
KA1 coil obtains electric, buzzer warning, can check alarm screen, find out reason.Initially debug the stage, unloaded test run
OK, monitor PLC program on computers, check that each electrical equipment action is the most correct, if meet design requirement, monitor converter
Operational factor, checks each pressure value the most consistent with manometric reading, and display numerical value on the touchscreen is the most correct, right
Do not meet the program of actual requirement and carry out that light maintenance is little to be changed.Program is run after complying fully with requirement, and analog subscriber operating condition, to pressure
Contracting machine loads trail run, checks the regulations speed of converter, is overshoot or stagnant tune, by constantly amendment P value and I value, searches out
Suitably P value, I value.Through the operation of 16 hours, finally determine P value I value, passed through the examination of user.This variable frequency regulating speed control
System operation on oxygen compressor obtains successfully.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (10)
1., for a compressor variable frequency control system for oxygen recovery, it includes switch board, is provided with major loop in switch board
With control loop；It is characterized in that: described major loop includes: three-phase air switch QF1, QF2, QF3, three A.C. contactors
KM1, KM2, KM3, three thermorelays FR1, FR2, FR3, two frequency conversion motors M1, M2, two blower fans m1, m2, aerator, two
Converter；
Wherein, external three phase mains L1, L2, L3, on the one hand the input through three-phase air switch QF1 with converter one connects
Connecing, the outfan of converter one is connected with frequency conversion motor M1, on the other hand through the input of three-phase air switch QF2 Yu converter two
End connects, and the outfan of converter two is connected with frequency conversion motor M2, and another further aspect is through three-phase air switch QF3 and A.C. contactor
The main contacts of KM1, KM2, KM3 connects, respectively with three thermorelays of the main contacts of three A.C. contactors KM1, KM2, KM3
One end of FR1, FR2, FR3 connects, the other end of three thermorelays FR1, FR2, FR3 respectively with two blower fan m1, m2, one
Aerator connects.
2. the compressor variable frequency control system for oxygen recovery as claimed in claim 1, it is characterised in that: in switch board face
Plate is provided with touch screen, start button, stop button, scram button and alarm；Described control loop includes: PLC, touches
Screen, Analog input mModule, pressure transmitter, two unloading electromagnetic valves, two air inlet electromagnetic valves, Switching Power Supply, transformator, five
Individual auxiliary reclay KA1, KA2, KA3, KA4, KA5, two-phase air switch QF4, cabinet fan；
Wherein, the input I0.0 of PLC connects the start button on switch board panel and remote activation button, the input of PLC
I0.1 connects the stop button on switch board panel, and described stop button is connected with long-range stop button, and the input I0.2 of PLC connects
The normally closed point of thermorelay FR1, the input I0.3 of PLC connects the normally closed point of thermorelay FR2, and the input I0.4 of PLC connects urgency
Stopping button, the outfan Q0.0 of PLC connects one end of auxiliary reclay KA1 coil, and the outfan Q0.1 of PLC connects auxiliary reclay
One end of KA2 coil, the outfan Q0.2 of PLC connects one end of auxiliary reclay KA3 coil, and the outfan Q0.3 of PLC connects centre
One end of relay K A4 coil, the outfan Q0.4 of PLC connects one end of auxiliary reclay KA5 coil, five auxiliary reclays
The other end of KA1, KA2, KA3, KA4, KA5 all meets 0V；Described Analog input mModule is all connected with PLC, described pressure inverting
Device is connected with analogue input template；Described touch screen and plc communication, the numerical value that PLC gathers shows on described touch screen.
3. the compressor variable frequency control system for oxygen recovery as claimed in claim 2, it is characterised in that: external two-phase
After power supply L1, L3 pass through two-phase air switch QF4, a wherein phase and the coil of two A.C. contactors KM1, KM2, thermorelay
FR3, air inlet electromagnetic valve one, air inlet electromagnetic valve two, unload electromagnetic valve one, the common port of unloading electromagnetic valve two connects, and another phase is divided
Not with five auxiliary reclays KA2, KA3, KA4, KA5, one end of the normally opened point of two A.C. contactors KM1, KM2 connects；In
Between the other end of the normally opened point of relay K A2 be connected with the coil of A.C. contactor KM1, another of the normally opened point of auxiliary reclay KA3
End is connected with the coil of A.C. contactor KM2；The other end of the normally opened point of auxiliary reclay KA2, KA3 is with A.C. contactor KM3's
Coil connects, and the normally closed point of thermorelay FR3 is connected with the coil of A.C. contactor KM3；Another of the normally opened point of auxiliary reclay KA4
Holding and be connected with unloading electromagnetic valve one, the other end of the normally opened point of auxiliary reclay KA5 is connected with unloading electromagnetic valve two, and two exchanges connect
The other end of the normally opened point of tentaculum KM1, KM2 is connected with two air inlet electromagnetic valves respectively；The power input of Switching Power Supply and transformation
Device connects, the power output end of Switching Power Supply output DC source, DC source respectively as PLC, Analog input mModule and
The working power of touch screen；Described alarm, one end of described cabinet fan connect with a wherein phase of transformator outfan, its
In another phase be connected with alarm, cabinet fan respectively by the normally opened contact of two auxiliary reclays KA1, KA3.
4. the compressor variable frequency control system for oxygen recovery as claimed in claim 2, it is characterised in that: described PLC type
Number it is S7-200-smart-ST20.
5. the compressor variable frequency control system for oxygen recovery as claimed in claim 2, it is characterised in that: described analog quantity
Input module model is EMAI04.
6. the compressor variable frequency control system for oxygen recovery as claimed in claim 2, it is characterised in that: described analog quantity
Input module is all connected by signal data line with PLC.
7. the compressor variable frequency control system for oxygen recovery as claimed in claim 2, it is characterised in that: described pressure becomes
Send device to pass through holding wire to be connected with analogue input template.
8. the compressor variable frequency control system for oxygen recovery as claimed in claim 3, it is characterised in that: described system
The PLC-CPU-485 communication interface using connection one end and PLC of connecting 9 pin male joints is connected, the other end respectively with two
Being connected of converter, utilize USS communication, the operational factor of converter is reached PLC, touch screen, by the operating instruction of PLC,
The numerical value controlling rotating speed passes to converter.
9. the compressor variable frequency control system for oxygen recovery as claimed in claim 3, it is characterised in that: described pressure becomes
Send water pressure signal that device collects, discharge pressure signal, boost pressure signal, be transported to by described Analog input mModule
The analog signals of pressure is converted into digital signal by described Analog input mModule by PLC, PLC.
10. the compressor variable frequency control system for oxygen recovery as claimed in claim 2, it is characterised in that: described touch
Screen is by Ethernet and plc communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620692641.2U CN205809665U (en) | 2016-07-01 | 2016-07-01 | A kind of compressor variable frequency control system for oxygen recovery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620692641.2U CN205809665U (en) | 2016-07-01 | 2016-07-01 | A kind of compressor variable frequency control system for oxygen recovery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106020096A (en) * | 2016-07-01 | 2016-10-12 | 安庆市佰联无油压缩机有限公司 | Compressor frequency-converting control system for oxygen recovery |
| CN110950393A (en) * | 2019-12-31 | 2020-04-03 | 清水源（上海）环保科技有限公司 | Integration sewage treatment device automatic control device |
-
2016
- 2016-07-01 CN CN201620692641.2U patent/CN205809665U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106020096A (en) * | 2016-07-01 | 2016-10-12 | 安庆市佰联无油压缩机有限公司 | Compressor frequency-converting control system for oxygen recovery |
| CN110950393A (en) * | 2019-12-31 | 2020-04-03 | 清水源（上海）环保科技有限公司 | Integration sewage treatment device automatic control device |
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