CN113900010A - Portable frequency conversion control system rapid overhauling device and overhauling method - Google Patents
Portable frequency conversion control system rapid overhauling device and overhauling method Download PDFInfo
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The invention discloses a portable fast overhaul device and an overhaul method of a variable frequency control system, which comprise a power supply control unit, an indication unit, a rotating speed control unit and a compressor detection unit, wherein the power supply control unit is respectively connected with the indication unit, the rotating speed control unit and the compressor detection unit, the indication unit is respectively connected with the compressor detection unit and a variable frequency controller, the rotating speed control unit is connected with the variable frequency controller, the compressor detection unit is respectively connected with the variable frequency compressor and the variable frequency controller, and the variable frequency controller is connected with the power supply control unit. The invention can realize the simultaneous maintenance or the independent maintenance of the variable frequency controller and the variable frequency compressor through the state change of the indicator lamp, and has the advantages of portability, low cost and good expansibility.
Description
Technical Field
The invention relates to the technical field of maintenance of variable frequency control systems, in particular to a portable quick maintenance device and a maintenance method for a variable frequency control system.
Background
With the popularization of frequency conversion of a refrigeration system, how to quickly overhaul an abnormal point of a frequency conversion control system becomes a key point of research.
The prior art is designed based on that a square wave controller is insensitive to parameters of the variable frequency compressor, and compared with a sine wave controller, the heavy-load starting capability of the variable frequency compressor is strong. The square wave controller is additionally arranged in the type of overhaul device, the square wave controller is connected with the variable frequency compressor through a lead, and whether the compressor can run or not is judged after the variable frequency compressor is electrified, so that the quality of the compressor is judged.
The working principle of the detection of the variable frequency compressor by using the square wave controller is as shown in the attached figure 1: firstly, connecting a variable frequency compressor through a detection line, then connecting commercial power, and if the variable frequency compressor acts, indicating that the compressor is normal; if not, the abnormal state of the compressor is indicated.
The technology has the advantages that the quality of the variable frequency compressor can be visually judged, and the built-in square wave controller of the device is not limited by parameters of variable frequency compressors of various brands. However, since the inverter control system includes key components such as an inverter controller and an inverter compressor, the device can only detect the quality of the inverter compressor, and cannot detect the quality of the inverter controller.
China, with publication number CN203404060U, specially adapted for 1 month and 22 months 2014, discloses an automatic detection device for inverter compressors, after the inverter air conditioner compressor cannot normally operate, a user or a maintenance person can directly detect and obtain various parameters of the tested compressor through the portable automatic detection device on site, compare the parameters with the nominal value of the compressor, confirm whether the compressor is normal within the first time, and further determine whether the inverter controller or the compressor needs to be replaced. However, the following drawbacks still exist in the patent: 1) only whether the compressor is normal or not can be detected, whether the variable frequency controller is normal or not is inferred according to the detection result of the compressor, and the variable frequency controller cannot be directly detected; 2) when the compressor is abnormal, the frequency conversion controller is possible to be normal or abnormal, if the compressor is directly replaced according to the abnormal result of the compressor, invalid operation is easily caused, and the overhaul cost is increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a portable quick overhaul device and an overhaul method of a variable frequency control system, which can realize the simultaneous overhaul or the independent overhaul of a variable frequency controller and a variable frequency compressor through the state change of an indicator lamp and have the advantages of portability, low cost and good expansibility.
According to one aspect of the specification of the invention, a portable frequency conversion control system fast overhaul device is provided, which comprises a power supply control unit, an indication unit, a rotating speed control unit and a compressor detection unit, wherein the power supply control unit is respectively connected with the indication unit, the rotating speed control unit and the compressor detection unit, the indication unit is respectively connected with the compressor detection unit and a frequency conversion controller, the rotating speed control unit is connected with the frequency conversion controller, the compressor detection unit is respectively connected with a frequency conversion compressor and the frequency conversion controller, and the frequency conversion controller is connected with the power supply control unit.
Among the above-mentioned technical scheme, insert external power source and for overhauing device and variable frequency controller power supply through the power control unit, provide adjustable rotational speed signal for variable frequency controller through the rotational speed control unit, gather variable frequency controller's output signal through compressor detecting element to drive the indicating unit and carry out the status display when output signal satisfies and predetermine the requirement, judge variable frequency control system's fault point through the status display result.
As a further technical scheme, the indicating unit comprises a first indicating lamp and a second indicating lamp, and the first indicating lamp is used for indicating the power-on states of the overhauling device and the variable frequency controller; and the second indicator light is used for indicating the maintenance state of the variable frequency controller and/or the variable frequency compressor.
Among the above-mentioned technical scheme, whether operating personnel accessible first pilot lamp directly perceived overhauls device and inverter controller and goes up the electricity normal, and normal back of going up the electricity directly judges inverter controller and inverter compressor's state through the state of second pilot lamp.
As a further technical scheme, when the variable frequency controller and the variable frequency compressor are overhauled simultaneously, the variable frequency controller and the variable frequency compressor are in an unknown state, and after the variable frequency controller and the variable frequency compressor are normal if the second indicator lamp is continuously turned on; if the second indicator light flickers, the variable frequency controller is normal, and the variable frequency compressor is abnormal; if the second indicator light is not on, the variable frequency controller is abnormal, and the state of the variable frequency compressor is undetermined. According to the technical scheme, the fault point of the variable frequency control system is judged according to different states of the second indicator lamp, so that the variable frequency controller and the variable frequency compressor are overhauled simultaneously, the judging mode is visual and clear, and the operability is high.
As a further technical scheme, when the variable frequency controller is independently overhauled, the state of the variable frequency controller is unknown, the state of the variable frequency compressor is known, and if the second indicator light is continuously on, the variable frequency controller is normal; when overhauing inverter compressor alone, inverter compressor state is unknown, and inverter controller state is known, if the second pilot lamp lasts to be bright, then inverter compressor is normal. This technical scheme has realized the independent maintenance to inverter controller or inverter compressor through the different states of second pilot lamp, easy operation easily realizes.
As a further technical scheme, the maintenance device is provided with a shell, and the outer surface of the shell is provided with a power supply connecting port, a variable frequency compressor connecting port, a signal output port, a rotating speed signal switching port and an indicator light; the power supply connection port is used for connecting an external power supply and supplying power for the device and the variable frequency controller, the variable frequency compressor connection port is used for connecting the variable frequency compressor and the variable frequency controller, the signal output port is used for outputting a rotating speed signal, the rotating speed signal switching port is used for selecting the frequency of signal output, and the indicating lamp is used for state indication.
According to the technical scheme, each module unit of the overhauling device is packaged through the shell, and is connected with the outside through the plurality of ports arranged on the surface of the shell. When practical application, need not other detection tool cooperations, only need to link to each other the maintenance device after the encapsulation with power, frequency conversion controller and frequency conversion compressor, can realize overhauing in the time of frequency conversion controller and frequency conversion compressor, frequency conversion controller overhauls alone, frequency conversion compressor overhauls alone.
As a further technical scheme, when an external power supply is switched on, if a first indicator light is on, the power of the maintenance device is normal; when the power supply control unit is used for electrifying the variable frequency controller, if the first indicator lamp is continuously turned on, the variable frequency controller is electrified normally, if the first indicator lamp is turned on first and then turned off, the overhauling device is electrified normally, and the variable frequency controller is electrified abnormally.
As a further technical scheme, the compressor detection unit comprises a current sensor for acquiring an output signal of the variable frequency controller; the comparator is used for comparing the output signal with the bias voltage of the comparator and outputting an overturning signal when the output signal has pulsation with the bias voltage as a reference; and the triode is used for driving the second indicator light to be on under the driving of the overturning signal.
Specifically, the current sensor collects an output signal of the frequency conversion controller, the collected output signal is compared with a bias voltage, when the output signal has pulsation based on the bias voltage, the comparator outputs an overturning signal, the overturning signal is coupled to the NPN type triode through the coupling capacitor, and the second indicator lamp is driven by the NPN type triode to display the output state of the frequency conversion control system.
According to one aspect of the description of the invention, an overhaul method of a fast overhaul method of a variable frequency control system is provided, which is realized by using the overhaul device, and when an inverter controller and an inverter compressor are overhauled simultaneously and are in unknown states, the method comprises the following steps:
respectively connecting the maintenance device with an external power supply, a variable frequency controller and a variable frequency compressor;
electrifying and observing the state of the first indicator light;
if the first indicator light is continuously on, observing the state of the second indicator light;
if the second indicator light is continuously on, the variable frequency controller and the variable frequency compressor are normal; if the second indicator light flickers, the variable frequency controller is normal, and the variable frequency compressor is abnormal; if the second indicator light is not on, the variable frequency controller is abnormal, and the state of the variable frequency compressor is undetermined.
Above-mentioned technical scheme only can realize overhauing when frequency conversion controller and frequency conversion compressor through overhauing device and pilot lamp, need not extra maintenance instrument and cooperatees, also need not extra detection and judgment method, can realize the judgement of frequency conversion control system fault point through the naked eye observation, easy operation, the practicality is strong.
As a further technical solution, when the inverter controller is separately overhauled and the inverter compressor is in a normal state, the method includes:
respectively connecting the maintenance device with an external power supply, a variable frequency controller and a variable frequency compressor;
electrifying and observing the state of the first indicator light;
if the first indicator light is continuously on, observing the state of the second indicator light;
if the second indicator light is continuously on, the frequency conversion controller is normal; and if the second indication is not bright, the variable frequency controller is abnormal.
As a further technical solution, when the inverter compressor is separately overhauled and the inverter controller is in a normal state, the method includes:
respectively connecting the maintenance device with an external power supply, a variable frequency controller and a variable frequency compressor;
electrifying and observing the state of the first indicator light;
if the first indicator light is continuously on, observing the state of the second indicator light;
if the second indicator light is continuously on, the variable frequency compressor is normal; and if the second indication is not bright, the inverter compressor is abnormal.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention provides a maintenance device which is connected with an external power supply through a power supply control unit and supplies power to the maintenance device and a variable frequency controller, an adjustable rotating speed signal is provided for the variable frequency controller through a rotating speed control unit, an output signal of the variable frequency controller is collected through a compressor detection unit, an indication unit is driven to display the state when the output signal meets the preset requirement, and the fault point of a variable frequency control system is judged through the state display result.
(2) The overhauling device provided by the invention has the advantages of simple structure, low cost and good expandability, and has the functions of independently detecting the variable frequency controller, independently detecting the variable frequency compressor, simultaneously detecting the variable frequency controller and the variable frequency compressor or only providing a rotating speed signal.
(3) When the maintenance device provided by the invention is applied, the fault point of the variable frequency control system can be judged through different states of one indicator lamp without additionally configuring other detection tools or adopting other data judgment modes.
(4) The invention provides a method which is realized by adopting the maintenance device, can realize the simultaneous maintenance of the variable frequency controller and the variable frequency compressor only through the maintenance device and the indicator lamp, does not need the matching of additional maintenance tools, does not need an additional detection and judgment method, can realize the judgment of the fault point of the variable frequency control system through the visual observation, and has simple operation and strong practicability.
Drawings
Fig. 1 is prior art.
Fig. 2 is a schematic structural view of a service device according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a power control unit according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a power-up circuit of the variable frequency controller according to an embodiment of the invention.
FIG. 5 is a schematic circuit diagram of a rotation speed control unit according to an embodiment of the invention.
Fig. 6 is a circuit diagram of a compressor detection unit according to an embodiment of the present invention.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Example 1
As shown in fig. 2, the present embodiment provides a portable fast maintenance device and a maintenance method for a variable frequency control system, the maintenance device includes a housing (such as a box cover in the figure), a power control unit, an indication unit, a rotation speed control unit and a compressor detection unit are disposed in the housing, and a power connection port, a variable frequency compressor connection port, a signal output port, a rotation speed signal switching port, a first indicator light and a second indicator light are disposed on a surface of the housing.
The ACL end and the ACN end of the power control unit are connected with the commercial power through a power connection port and are used for supplying power to the maintenance device; and an ACL1 end and an ACN1 end of the variable frequency controller are connected with the variable frequency controller and used for supplying power to the variable frequency controller. The maintenance device is suitable for a full power grid of 90V-264V/47-63 Hz.
When the maintenance device is powered on, whether the maintenance device is powered on successfully is judged by observing the state of the first indicator lamp. When the power is supplied to the variable frequency controller through the ACL1 terminal and the ACN1 terminal of the power control unit, whether the variable frequency controller is successfully electrified is judged by observing the state of the first indicator lamp.
Whether the variable frequency controller is electrified normally has two conditions: firstly, the power voltage is equal to the mains supply; the first is that the power supply voltage is lower than the commercial power due to the internal fault of the inverter controller, and it is determined that the inverter controller is abnormally powered when the voltage is set to be lower than 200V (including 0V) as in the present embodiment.
As shown in fig. 3, the power control unit contains a filter circuit and a high frequency isolated switching power supply that generates 12V and 5V low voltages for ensuring the operation of the entire service device is below 36V safe voltage. The power supply in the maintenance device is an isolated power supply which is lower than the human body safety voltage, and the operation is safe.
The high-frequency isolating switch power supply outputs an alternating current power supply to the variable frequency controller through the double-circuit fuse. As shown in fig. 4, when the commercial power is input, the power is supplied to the variable frequency controller through the fuse F2\ F3, and the power supply voltage of the variable frequency controller is collected at this time. If the voltage is lower than the set voltage, a low level is output through the overturning of the comparator, the first-stage NPN triode is not conducted, the second-pole NPN triode is conducted, and the short-circuit LED1 is equivalent to that the diode is added at the bottom end of the LED1 to prevent the conduction of the NPN triode, namely VCE (sat) is enough to conduct the LED 1); if the voltage is set normally, the first-stage NPN triode is always conducted, the second-stage NPN triode is always not conducted, and the LED1 emits light normally.
The rotating speed control unit of the embodiment is connected with the variable frequency controller through the signal output port so as to output rotating speed signals of different gears to the variable frequency controller. When the rotating speed signal needs to be switched, the switchable gears of the rotating speed signal comprise 40Hz, 67Hz, 100Hz and 140Hz, and when the rotating speed signal is not switched, the signal output port stably outputs a PWM signal of 140 Hz.
As shown in fig. 5, the rotation speed control unit generates a square wave with a duty ratio of 0.5 and 5V. The PWM waves with different frequencies such as 40Hz, 67Hz, 100Hz, 140Hz and the like are matched by adjusting the resistance value of the feedback end. The rotating speed control unit adopts an analog circuit to complete PWM signal output, when CN2 is not operated, PWM waves with the frequency of 140Hz are output by default, and the overhauling device at the moment can replace a signal generator detection tool.
As shown in fig. 6, in the compressor detection unit, the current sensor collects an output signal of the inverter controller, compares the collected output signal with the bias voltage, and when the output signal has a ripple based on the bias voltage, the comparator outputs an inversion signal, which is coupled to the NPN transistor through the coupling capacitor, and drives the second indicator light through the NPN transistor to display an output state of the inverter controller. Wherein, U/V/W respectively represents the three-phase input of the relative direct current permanent magnet synchronous motor.
In this embodiment, the second indicator light can be driven by detecting any phase current of the inverter compressor and comparing the detected phase current with a reference.
The maintenance device size that this embodiment provided does: 200mm in length, 120mm in width, 50mm in height, have the advantage of small size, portable.
In this embodiment, the power control unit is connected to the commercial power and supplies power for the maintenance device and the frequency conversion controller, the rotating speed control unit provides an adjustable rotating speed signal for the frequency conversion controller, the compressor detection unit collects an output signal of the frequency conversion controller, and drives the indication unit to display the state when the output signal meets a preset requirement, and the fault point of the frequency conversion control system is judged according to the state display result.
Whether this embodiment goes up the electricity through first pilot lamp directly perceived and is normally examined maintenance device and frequency conversion controller, and normal back of going up the electricity directly judges frequency conversion controller and frequency conversion compressor's state through the state of second pilot lamp, makes things convenient for maintenance personal to judge trouble position fast.
Example 2
In the embodiment, the maintenance device in embodiment 1 is used for simultaneously maintaining the variable frequency controller and the variable frequency compressor, wherein the variable frequency controller and the variable frequency compressor are in unknown states.
When the device is applied, the maintenance device is connected with an external power supply, a variable frequency controller and a variable frequency compressor respectively; then the commercial power is connected, and whether the power-on of the maintenance device and the variable frequency controller is normal or not is checked.
Specifically, when the maintenance device is connected with the mains supply, if the first indicator light is on, the maintenance device is normally powered on; when the power supply control unit is used for electrifying the variable-frequency controller, if the first indicator lamp is continuously turned on, the variable-frequency controller is electrified normally, if the first indicator lamp is turned on first and then turned off, the overhauling device is electrified normally, and the variable-frequency controller is electrified abnormally; if the first indicator light is not on, the maintenance tool is electrified abnormally, and the electrifying state of the variable frequency controller is undetermined.
When energized, the status of the first indicator light LED2 is shown in Table one.
| LED1 status | Maintenance device | Frequency conversion controller |
| Continuously bright | OK | OK |
| First on and then off | OK | NOK |
| Is not bright | NOK | ---- |
And if the maintenance device and the variable frequency controller are normally electrified, observing the state of the second indicator lamp.
The method specifically comprises the following steps: if the second indicator light is continuously on, the variable frequency controller and the variable frequency compressor are normal; if the second indicator light flickers, the variable frequency controller is normal, and the variable frequency compressor is abnormal; if the second indicator light is not on, the variable frequency controller is abnormal, and the state of the variable frequency compressor is undetermined. When energized, the status of the second indicator light LED2 is shown in Table two.
| LED2 status | Frequency conversion controller | Frequency conversion compressor |
| Continuously bright | OK | OK |
| Flashing | OK | NOK |
| Is not bright | NOK | ---- |
Watch two
According to the embodiment, the fault point of the frequency conversion control system is judged through different states of the second indicator lamp, so that the frequency conversion controller and the frequency conversion compressor are overhauled simultaneously, the judging mode is visual and clear, and the operability is high.
Example 3
The present embodiment utilizes the service apparatus of embodiment 1 to service the inverter controller alone, where the inverter compressor is in a known normal state.
The specific operation is as follows:
respectively connecting the maintenance device with an external power supply, a variable frequency controller and a variable frequency compressor;
electrifying and observing the state of the first indicator light;
if the first indicator light is continuously on, observing the state of the second indicator light;
if the second indicator light is continuously on, the frequency conversion controller is normal; and if the second indicator light flickers, the frequency conversion controller is abnormal.
The indication status of the second indicator light LED2 is shown in table three.
| LED2 status | Frequency conversion controller |
| Continuously bright | OK |
| Flashing | NOK |
Watch III
The different states of this embodiment through the second pilot lamp have realized overhauing inverter controller's alone, easy operation easily realizes.
Example 4
This embodiment utilizes the service apparatus of embodiment 1 to service the inverter compressor alone, where the inverter controller is in a known normal state.
The specific operation is as follows:
respectively connecting the maintenance device with an external power supply, a variable frequency controller and a variable frequency compressor;
electrifying and observing the state of the first indicator light;
if the first indicator light is continuously on, observing the state of the second indicator light;
if the second indicator light is continuously on, the variable frequency compressor is normal; and if the second indicator light flickers, the frequency conversion compressor is abnormal.
The indication status of the second indicator light LED2 is shown in table four.
| LED2 status | Frequency conversion compressor |
| Continuously bright | OK |
| Flashing | NOK |
Watch four
The different states of this embodiment through the second pilot lamp have realized overhauing inverter compressor's alone, easy operation easily realizes.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a light frequency conversion control system fast overhaul device, its characterized in that, includes power control unit, instruction unit, rotational speed control unit and compressor detecting element, power control unit links to each other respectively with instruction unit, rotational speed control unit and compressor detecting element, instruction unit links to each other respectively with compressor detecting element and frequency conversion controller, rotational speed control unit links to each other with frequency conversion controller, compressor detecting element links to each other respectively with frequency conversion compressor and frequency conversion controller, frequency conversion controller links to each other with power control unit.
2. The portable frequency conversion control system quick maintenance device according to claim 1, wherein the indicating unit comprises a first indicating lamp and a second indicating lamp, the first indicating lamp is used for indicating the power-on state of the maintenance device and the frequency conversion controller; and the second indicator light is used for indicating the maintenance state of the variable frequency controller and/or the variable frequency compressor.
3. The portable fast overhaul device for the variable frequency control system according to claim 2, wherein when the variable frequency controller and the variable frequency compressor are overhauled simultaneously, the variable frequency controller and the variable frequency compressor are both in an unknown state, and after the device is powered on, if the second indicator lamp is continuously turned on, the variable frequency controller and the variable frequency compressor are both normal; if the second indicator light flickers, the variable frequency controller is normal, and the variable frequency compressor is abnormal; if the second indicator light is not on, the variable frequency controller is abnormal, and the state of the variable frequency compressor is undetermined.
4. The portable fast overhaul device for the variable frequency control system according to claim 2, wherein when the variable frequency controller is overhauled independently, the state of the variable frequency controller is unknown, the state of the variable frequency compressor is known, and if the second indicator light is continuously on, the variable frequency controller is normal; when overhauing inverter compressor alone, inverter compressor state is unknown, and inverter controller state is known, if the second pilot lamp lasts to be bright, then inverter compressor is normal.
5. The portable variable frequency control system quick maintenance device according to claim 2, wherein the maintenance device is provided with a shell, and the outer surface of the shell is provided with a power supply connecting port, a variable frequency compressor connecting port, a signal output port, a rotating speed signal switching port and an indicator light; the power supply connection port is used for connecting an external power supply and supplying power for the device and the variable frequency controller, the variable frequency compressor connection port is used for connecting the variable frequency compressor and the variable frequency controller, the signal output port is used for outputting a rotating speed signal, the rotating speed signal switching port is used for selecting the frequency of signal output, and the indicating lamp is used for state indication.
6. The portable frequency conversion control system quick overhaul device as claimed in claim 2, wherein when the external power supply is connected, if the first indicator light is on, the overhaul device is powered on normally; when the power supply control unit is used for electrifying the variable frequency controller, if the first indicator lamp is continuously turned on, the variable frequency controller is electrified normally, if the first indicator lamp is turned on first and then turned off, the overhauling device is electrified normally, and the variable frequency controller is electrified abnormally.
7. The portable variable frequency control system quick maintenance device of claim 1, wherein the compressor detection unit comprises a current sensor for collecting an output signal of the variable frequency controller; the comparator is used for comparing the output signal with the bias voltage of the comparator and outputting an overturning signal when the output signal has pulsation with the bias voltage as a reference; and the triode is used for driving the second indicator light to be on under the driving of the overturning signal.
8. A fast overhaul method of a variable frequency control system, which is realized by the portable fast overhaul device of the variable frequency control system according to any one of claims 1 to 7, and which is characterized in that when an inverter controller and an inverter compressor are overhauled simultaneously and both are in an unknown state, the method comprises the following steps:
respectively connecting the maintenance device with an external power supply, a variable frequency controller and a variable frequency compressor;
electrifying and observing the state of the first indicator light;
if the first indicator light is continuously on, observing the state of the second indicator light;
if the second indicator light is continuously on, the variable frequency controller and the variable frequency compressor are normal; if the second indicator light flickers, the variable frequency controller is normal, and the variable frequency compressor is abnormal; if the second indicator light is not on, the variable frequency controller is abnormal, and the state of the variable frequency compressor is undetermined.
9. The method for fast overhaul of the inverter control system according to claim 7, wherein when the inverter controller is overhauled separately and the inverter compressor is in a normal state, the method comprises the following steps:
respectively connecting the maintenance device with an external power supply, a variable frequency controller and a variable frequency compressor;
electrifying and observing the state of the first indicator light;
if the first indicator light is continuously on, observing the state of the second indicator light;
if the second indicator light is continuously on, the frequency conversion controller is normal; and if the second indication is not bright, the variable frequency controller is abnormal.
10. The method for fast overhaul of the inverter control system according to claim 7, wherein when the inverter compressor is overhauled independently and the inverter controller is in a normal state, the method comprises the following steps:
respectively connecting the maintenance device with an external power supply, a variable frequency controller and a variable frequency compressor;
electrifying and observing the state of the first indicator light;
if the first indicator light is continuously on, observing the state of the second indicator light;
if the second indicator light is continuously on, the variable frequency compressor is normal; and if the second indication is not bright, the inverter compressor is abnormal.
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| CN202111164765.5A CN113900010A (en) | 2021-09-30 | 2021-09-30 | Portable frequency conversion control system rapid overhauling device and overhauling method |
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| CN202111164765.5A CN113900010A (en) | 2021-09-30 | 2021-09-30 | Portable frequency conversion control system rapid overhauling device and overhauling method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW530123B (en) * | 2002-06-03 | 2003-05-01 | Ming-De Liu | Frequency conversion controlling device of compressor |
| US20140368152A1 (en) * | 2013-03-15 | 2014-12-18 | Micheal Robert Pasche | Method of Controlling a Pump and Motor |
| US20150070047A1 (en) * | 2013-09-06 | 2015-03-12 | Trane International Inc. | Diagnostics for systems including variable frequency motor drives |
| CN206400059U (en) * | 2016-11-09 | 2017-08-11 | 四川长虹精密电子科技有限公司 | Compressor fault indicating circuit based on refrigerator frequency conversion electrical control integrated board |
| CN109541334A (en) * | 2017-09-22 | 2019-03-29 | 博西华电器（江苏）有限公司 | Frequency converter test method and test device |
-
2021
- 2021-09-30 CN CN202111164765.5A patent/CN113900010A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW530123B (en) * | 2002-06-03 | 2003-05-01 | Ming-De Liu | Frequency conversion controlling device of compressor |
| US20140368152A1 (en) * | 2013-03-15 | 2014-12-18 | Micheal Robert Pasche | Method of Controlling a Pump and Motor |
| US20150070047A1 (en) * | 2013-09-06 | 2015-03-12 | Trane International Inc. | Diagnostics for systems including variable frequency motor drives |
| CN206400059U (en) * | 2016-11-09 | 2017-08-11 | 四川长虹精密电子科技有限公司 | Compressor fault indicating circuit based on refrigerator frequency conversion electrical control integrated board |
| CN109541334A (en) * | 2017-09-22 | 2019-03-29 | 博西华电器（江苏）有限公司 | Frequency converter test method and test device |
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