CN106841862A - Peace river frequency converter UV method for diagnosing faults and its automatic detection device - Google Patents
Peace river frequency converter UV method for diagnosing faults and its automatic detection device Download PDFInfo
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- CN106841862A CN106841862A CN201710046022.5A CN201710046022A CN106841862A CN 106841862 A CN106841862 A CN 106841862A CN 201710046022 A CN201710046022 A CN 201710046022A CN 106841862 A CN106841862 A CN 106841862A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/005—Testing of electric installations on transport means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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Abstract
The present invention is a kind of peace river frequency converter UV method for diagnosing faults and its automatic detection device, and peace river frequency converter mainly is made up of master control borad, communication board and interface, power module, guidance panel, some groups of (PCC) powers, described (PCC) power mainly by：IGBT, trigger board and precharge switching contactor are constituted, it is characterised in that specific method is as follows：1st, the voltage feedback signal of precharge switching contactor adhesive situation is extracted；2nd, any one group of precharge switching contactor in some groups of (PCC) powers is non-attracting state, then corresponding detection relay coil is synchronously non-attracting state, and the counter loop conducting being correspondingly arranged is counted, and confirms that this group of (PCC) power has 1 failure；Otherwise do not count then；3rd, maintenance personal reads counter values, quick to confirm it is which group power cell failure of correspondence by the numerical value change of counter, carries out maintenance work.
Description
Technical field
The present invention relates to a kind of frequency converter failure detection method, particularly disclose one kind and be applied to pacify river 676H5 frequency converters
Report diagnostic method during UV failures, be for hoisting machinery frequency converter automatic detection and display trouble point a kind of method, just
Faulty component is quickly found in maintenance personal and overhauled.
Background technology
Peace river 676H5 frequency converters are main by master control borad, communication board and interface, guidance panel, power module, (PCC) power structure
Into, according to load needs, sufficiently large power output being provided using some groups of (PCC) powers, every group of (PCC) power is output as
200KVA.Described (PCC) power it is main by：IGBT, resistance-capacitance absorption, afterflow protection, current detecting, cooling blower, quick fuse
Protection, trigger board（Driving plate）, start resistance, precharge switching contactor, electric capacity and input/output interface and constitute.Its main work
It is as flow：After connecting main circuit power, the dc bus for pacifying river 676H5 frequency converters receives VS -656DC5（Rectification unit）
The dc source sent, starts to charge the electric capacity on (PCC) power, starts simultaneously at self-inspection, electric capacity charging complete, master control borad inspection
After measuring the normal data, by the trigger board of (PCC) power（Driving plate）On 17CN connector interfaces, switching signal is passed
Precharge switching contactor is sent to, then by the contact of precharge switching contactor, by the trigger board of (PCC) power（Driving plate）
On 17CN connector interfaces, by the attracting state of the precharge switching contactor, master control borad is fed back in the form of voltage, complete
The gatherer process of this data needed for link self-inspection.
The defect that above-mentioned prior art is present：If switching signal is sent to preliminary filling TURP by electric capacity charging complete, master control borad
After changing-over tentaculum, the voltage feedback signal that precharge switching contactor feedback comes is not connected to such as（It is pre-charged switching contactor
Non- adhesive）, master control borad can be by failure code including on guidance panel.But, the failure code shown on guidance panel is only
It is " UV " or UV3 " printed words, implication is respectively：Instantaneous power loss, precharge switching contactor contact are opened.By frequency converter
Constitute and the workflow of (PCC) power understands, some groups of (PCC) powers controlled by one piece of mainboard of frequency converter, occur
Failure is likely to be present in any one group in some groups of (PCC) powers.Obviously, the failure code for only being shown by guidance panel,
Can not accurately judge that specific which group in some groups of (PCC) powers breaks down, it is necessary to manually by observing master control borad
The combination of upper five indicator lamps judges corresponding (PCC) power error situation, and after there are UV fault-signals, maintenance personal needs
Check input power whether phase shortage, if input power is normal, then check whether commutating circuit faulty, if all do not have
Problem, it is necessary to situations such as whether whether problematic, dropping resistor is breaking on DC detection circuit seen.Such diagnostic mode is not
The personnel that only need repairing are very familiar to related circuit, there is technology really up to the mark, and workload is big, even the dimension being skilled in technique
The personnel of repairing are also required to judge failure by the extensive work time, have greatly delayed the normal operation of equipment, especially
In the container terminal using the 676H5 frequency converter work of peace river, caused economic loss is huge.
The content of the invention
Present invention aim to address the defect of prior art, design when a kind of peace river 676H5 frequency converters report UV failures
Diagnostic method, can effectively detect in the peace river 676H5 frequency convertor systems using multigroup (PCC) power, which group power packages
Part there occurs the precharge non-adhesive of switching contactor or instantaneously lose the failure put.
What the present invention was realized in：One kind peace river frequency converter UV method for diagnosing faults, is applied to pacify river 676H5 type frequency conversions
Device, described peace river frequency converter is main by master control borad, communication board and interface, power module, guidance panel and some groups of power packages
Part is constituted, described (PCC) power it is main by：IGBT, resistance-capacitance absorption, afterflow protection, current detecting, cooling blower, quick fuse
Protection, trigger board, startup resistance, precharge switching contactor, electric capacity and input/output interface are constituted, it is characterised in that described
Method for diagnosing faults step is as follows：
（1）Precharge switching contactor adhesive feelings are extracted by the connector interface set in the trigger board in the (PCC) power
The voltage feedback signal of condition；
（2）Some groups of (PCC) powers are respectively equipped with corresponding detection relay, and are provided with accordingly and the detection relay
The counter loop of contact portion, the contact of the detection relay is divided into the normally opened contact and detection relay of detection relay
Normally-closed contact, when in some groups of described (PCC) powers it is all of precharge switching contactor all be attracting state, then with advance
The coil of the corresponding detection relay of charging switching contactor is also all attracting state, the normally-closed contact of corresponding detection relay
All disconnect and be in open-circuit condition, and the normally opened contact of corresponding detection relay is all closed and is in channel status so that phase
The normally opened contact of the detection relay connected in the same branch road of counter and the normally-closed contact of detection relay are answered, one is all formed
A disconnected, logic closed and disconnect and not counting；
（3）There is any one group of precharge switching contactor in some groups of (PCC) powers for non-attracting state, then correspond to this group pre-
The coil of the detection relay of charging switching contactor is also non-attracting state, the detection relay of this group of correspondence in counter loop
The normally-closed contact of device is maintained the original state and is in channel status, and the precharge switching of normal adhesive is contacted in some groups of (PCC) powers
The normally opened contact of the detection relay in the counter loop corresponding to device is closed and is in channel status so that corresponding counter
The normally opened contact of the detection relay connected in same branch road and the normally-closed contact of detection relay are formed fully closed logical and led
Logical, then the counter loop conducting corresponding to this group of (PCC) power, is counted, and confirms that this group of (PCC) power has 1 failure；
（4）When there is " UV " failure, the voltage feedback signal that switching contactor is pre-charged during by malfunction passes through the work(
The 17CN connector interfaces set in trigger board in rate component feed back to described master control borad, by master control borad by failure code
" UV " or UV3 " is displayed on guidance panel；
（5）Maintenance personal reads counter values, confirms it is which group power cell hair according to the numerical value change for corresponding to counter
Raw failure, carries out corresponding maintenance work.
The voltage feedback signal of the precharge switching contactor adhesive situation in the (PCC) power is by trigger board
What the interface of the connector of setting was extracted, described connector is 17CN connectors, is inserted by four pin jack plugs and four pins
The external member of head plug-in unit composition, described four pins are a pins, b pins, c pins, d pins, and respectively be used for switching signal in corresponding circuit
A ports, b ports and the c ports for voltage feedback signal, the connection of d port circuits, wherein described a ports and b ports are
The switching signal that mainboard sends DC24V is received, described a ports connect positive source, described b ports and connect power cathode, together
When, described a ports connect with described c ports direct circuit, and described voltage feedback signal is by described b ports and d
The voltage feedback signal that the current potential that port is formed is extracted, described d ports connect positive source, and b ports connect power cathode.
Four pin plug plug-in units of the 17CN connectors are fixed in described trigger board, and described 17CN connectors are used for
For voltage feedback signal and master control borad that master control borad provides precharge switching contactor contact are carried to precharge switching contactor
For switching signal；By taking one group of (PCC) power as an example, the four pin connectors matched with described 17CN connectors need to be set up,
The external member that the four pin plug connectors by four pin jack connectors and with a pins, b pins, c pins, d pins are constituted, from four described pins
1 wire and described band a pins, b pins, c are respectively drawn in a pins port of jack connector, b pins port, c pins port and d pins port
While pin, four pin plug connectors of d pins are connected, then 1 wire is respectively drawn from described d pins port, b pins port, and divided
No. 1 port, No. 2 ports at detection relay coil K1 two ends are not connected to, so as to obtain be connect with the 17CN set in trigger board
The separated time connector of the automatic detection device that the interface of plug-in unit matches, by four pin jack plugs of the 17CN connectors from institute
Pulled up in the trigger board stated, insert four pin plug connectors of the separated time connector, and by four pins of the separated time connector
Jack connector is docked with four pin plug plug-in units of the 17CN connectors, is realized on the premise of original function is met, by institute
The purpose that voltage feedback signal is extracted is needed, some groups of (PCC) powers used in described frequency converter need to be correspondingly arranged supporting
The separated time connector of group number.
The peace river frequency converter UV fault diagnosis automatic detections that a kind of above-mentioned peace river frequency converter UV method for diagnosing faults is used
Device, it is characterised in that：Described automatic detection device include information state recorder, logic automatically control with decision circuitry,
Overcurrent fast-tripping protection circuit, relay indicating light, the shell with antirust and insulation function, separated time connector and with frequency converter on each
The interface of voltage feedback signal is extracted, by each extraction voltage feedback signal on described separated time connector and frequency converter
Interface is connected, and reads the voltage fed back by the precharge switching contactor contact inside frequency converter in each (PCC) power trigger board
Feedback signal, then by described logic judgment and automatic control circuit, it would be desirable to the data-signal for being counted is sent to described
Information state recorder shown result automatically, described relay indicating light is used to represent that described automatic detection device to be
No to be in normal operating conditions, described overcurrent fast-tripping protection circuit is excessively electric inside described automatic detection device for preventing
Stream causes described peace river frequency converter internal short circuit fault, and described information state recorder includes counter loop, for remembering
The corresponding (PCC) power number of stoppages is recorded, the separated time connector of the automatic detection device is connect with the 17CN set in trigger board
The four pin connectors that plug-in unit matches, a pins port, b pins port from four this end of pin jack connector of the separated time connector,
While 4 wires are drawn in c pins port and d pins port, 2 wires, four pins of formation are also drawn again from b pins port, d pins port
Jack connector is provided with 6 wires, and 2 wires that the b pins port, d pins port are drawn are connected to detection relay coil
Two ends, some groups of (PCC) powers used in described frequency converter need to be correspondingly arranged separated time connector with set group number and corresponding
The detection relay of quantity.
Four pin plug plug-in units of the 17CN connectors are fixed in described trigger board, when being detected, first will be described
Four pin jack plugs of 17CN connectors are pulled up, then it is connect with four pin plugs of the separated time connector of the automatic detection device
Plug-in unit is docked, and then patches the 17CN that four pin jack connectors of the separated time connector are inserted and fixed in the trigger board
On four pin plug plug-in units of part.
Instantaneous power loss is caused due to the precharge non-adhesive of switching contactor, two can be shown on guidance panel
Individual failure code, i.e. " UV " and " UV3 ", wherein " UV " refers to precharge switching contactor contact opens non-adhesive or instantaneous mistake
Put, " UV3 " refers to instantaneous power loss, and it is exactly to be pre-charged switching contactor to touch that instantaneous power loses a kind of state therein
Point is instantaneous to open non-adhesive, so, UV failures of the present invention include being shown on the guidance panel of peace river 676H5 frequency converters
Two kinds of failure codes of UV and UV3.
The beneficial effects of the invention are as follows：The present invention is a kind of diagnosis when reporting UV failures suitable for peace river 676H5 frequency converters
Method, can will show the trouble point residing for failure code from multigroup (PCC) power, by certainly in mainboard report " UV " failure
Dynamic to detect that accurate, rapid and particularly shown which group haveing in (PCC) power occurs in that failure, compensate for prior art can not
The defect of automatic detection.Meanwhile, the present invention use it is easy to operate, be easy to replicate, can easily be produced according to the method
Corresponding automatic detection device, according to the current market price, cost of manufacture can be controlled in 500 yuan or so of RMB, and
Because automatic detection device carries memory function according to obtained in the inventive method, information will not be lost because of power-off, greatly
The work of maintenance personal is facilitated, and ensure that the accuracy of testing result.The present invention has matter in the efficiency of maintenance
Leap, for a long time, there is this failure in similar frequency converter, because maintenance time is long, except to maintenance technician, equipment control
And it is outer using the harbour entirety operation management proposition test of peace river frequency converter, the integrity service reputation to harbour is also a pole
Big challenge, has untied a chain for many years during relevant device of bottling up is repaired, and is also tripped for the development of harbour eliminates one piece
Stone.
Brief description of the drawings
Fig. 1 is that the automatic detection device detection of the embodiment of the present invention is former with the work of logic judgment automatic counting control circuit
Reason figure.
Fig. 2 is that the voltage feedback signal of embodiment of the present invention automatic detection device extracts circuit connecting relation schematic diagram.
Fig. 3 is four of the 17CN connectors in the trigger board of peace river 676H5 transducer power components in the embodiment of the present invention
The electrical block diagram of pin plug plug-in unit.
Specific embodiment
A kind of peace river frequency converter UV method for diagnosing faults of the invention, is applied to pacify river 676H5 type frequency converters, described peace river
Frequency converter is mainly made up of master control borad, communication board and interface, power module, guidance panel and some groups of (PCC) powers, described
(PCC) power it is main by：IGBT, resistance-capacitance absorption, afterflow protection, current detecting, cooling blower, quick fuse protection, trigger board,
Start resistance, precharge switching contactor, electric capacity and input/output interface to constitute, it is characterised in that described method for diagnosing faults
Step is as follows：
（1）Precharge switching contactor adhesive feelings are extracted by the connector interface set in the trigger board in the (PCC) power
The voltage feedback signal of condition；
（2）Some groups of (PCC) powers are respectively equipped with corresponding detection relay, and are provided with accordingly and the detection relay
The counter loop of contact portion, the contact of the detection relay is divided into the normally opened contact and detection relay of detection relay
Normally-closed contact, when in some groups of described (PCC) powers it is all of precharge switching contactor all be attracting state, then with advance
The coil of the corresponding detection relay of charging switching contactor is also all attracting state, the normally-closed contact of corresponding detection relay
All disconnect and be in open-circuit condition, and the normally opened contact of corresponding detection relay is all closed and is in channel status so that phase
The normally opened contact of the detection relay connected in the same branch road of counter and the normally-closed contact of detection relay are answered, one is all formed
A disconnected, logic closed and disconnect and not counting；
（3）There is any one group of precharge switching contactor in some groups of (PCC) powers for non-attracting state, then correspond to this group pre-
The coil of the detection relay of charging switching contactor is also non-attracting state, the detection relay of this group of correspondence in counter loop
The normally-closed contact of device is maintained the original state and is in channel status, and the precharge switching of normal adhesive is contacted in some groups of (PCC) powers
The normally opened contact of the detection relay in the counter loop corresponding to device is closed and is in channel status so that corresponding counter
The normally opened contact of the detection relay connected in same branch road and the normally-closed contact of detection relay are formed fully closed logical and led
Logical, then the counter loop conducting corresponding to this group of (PCC) power, is counted, and confirms that this group of (PCC) power has 1 failure；
（4）When there is " UV " failure, the voltage feedback signal that switching contactor is pre-charged during by malfunction passes through the work(
The 17CN connector interfaces set in trigger board in rate component feed back to described master control borad, by master control borad by failure code
" UV " or UV3 " is displayed on guidance panel；
（5）Maintenance personal reads counter values, confirms it is which group power cell hair according to the numerical value change for corresponding to counter
Raw failure, carries out corresponding maintenance work.
The voltage feedback signal of the precharge switching contactor adhesive situation in the (PCC) power is by trigger board
What the interface of the connector of setting was extracted, described connector is 17CN connectors, is inserted by four pin jack plugs and four pins
The external member of head plug-in unit composition, described four pins are a pins, b pins, c pins, d pins, and respectively be used for switching signal in corresponding circuit
A ports, b ports and the c ports for voltage feedback signal, the connection of d port circuits, wherein described a ports and b ports are
The switching signal that mainboard sends DC24V is received, described a ports connect positive source, described b ports and connect power cathode, together
When, described a ports connect with described c ports direct circuit, and described voltage feedback signal is by described b ports and d
The voltage feedback signal that the current potential that port is formed is extracted, described d ports connect positive source, and b ports connect power cathode.
Four pin plug plug-in units of the 17CN connectors are fixed in described trigger board, and described 17CN connectors are used for
For voltage feedback signal and master control borad that master control borad provides precharge switching contactor contact are carried to precharge switching contactor
For switching signal；By taking one group of (PCC) power as an example, the four pin connectors matched with described 17CN connectors need to be set up,
The external member that the four pin plug connectors by four pin jack connectors and with a pins, b pins, c pins, d pins are constituted, from four described pins
1 wire and described band a pins, b pins, c are respectively drawn in a pins port of jack connector, b pins port, c pins port and d pins port
While pin, four pin plug connectors of d pins are connected, then 1 wire is respectively drawn from described d pins port, b pins port, and divided
No. 1 port, No. 2 ports at detection relay coil K1 two ends are not connected to, so as to obtain be connect with the 17CN set in trigger board
The separated time connector of the automatic detection device that the interface of plug-in unit matches, by four pin jack plugs of the 17CN connectors from institute
Pulled up in the trigger board stated, insert four pin plug connectors of the separated time connector, and by four pins of the separated time connector
Jack connector is docked with four pin plug plug-in units of the 17CN connectors, is realized on the premise of original function is met, by institute
The purpose that voltage feedback signal is extracted is needed, some groups of (PCC) powers used in described frequency converter need to be correspondingly arranged supporting
The separated time connector of group number.
The automatic detection device that present invention peace river frequency converter UV method for diagnosing faults is used includes information state recorder（From
Band lithium battery）, logic automatically control and decision circuitry, overcurrent fast-tripping protection circuit, relay indicating light, band antirust and insulation function
Shell, separated time connector and with frequency converter on each extract voltage feedback signal interface, patched by described separated time
Part is connected with each interface for extracting voltage feedback signal on frequency converter, reads in each (PCC) power trigger board by frequency converter
The voltage feedback signal of the precharge switching contactor contact feedback in portion, then pass through described logic judgment and automatically control electricity
Road, it would be desirable to which the data-signal for being counted is sent to described information state recorder and is shown result, described work automatically
Make indicator lamp for representing whether described automatic detection device is in normal operating conditions, described overcurrent fast-tripping protection circuit
Be for preventing described automatic detection device internal over-current from causing described peace river frequency converter internal short circuit fault, it is described
Information state recorder includes counter loop, for recording the corresponding (PCC) power number of stoppages, the automatic detection device
Separated time connector be with the four pin connectors that match of 17CN connectors set in trigger board, from the separated time connector
While 4 wires are drawn in a pins port at four this end of pin jack connector, b pins port, c pins port and d pins port, also from b pins
2 wires are drawn in port, d pins port again, and four pin jack connectors of formation are provided with 6 wires, the b pins port, d pins port
2 wires drawn are connected to the two ends of detection relay coil, some groups of (PCC) powers used in described frequency converter
The detection relay of separated time connector and respective numbers with set group number need to be correspondingly arranged.
Four pin plug plug-in units of the 17CN connectors are fixed in described trigger board, when being detected, first will be described
Four pin jack plugs of 17CN connectors are pulled up, then it is connect with four pin plugs of the separated time connector of the automatic detection device
Plug-in unit is docked, and then patches the 17CN that four pin jack connectors of the separated time connector are inserted and fixed in the trigger board
On four pin plug plug-in units of part.
With reference to specific embodiment, the invention will be further described.
Embodiment：
The peace river 676H5 frequency converters that the present embodiment is directed to are made up of 4 groups of (PCC) powers, and every group of (PCC) power is output as 200KVA,
Common 800KVA.Accordingly, the present embodiment is provided with four groups of corresponding detection relay and four groups of counter loops.
1~accompanying drawing 3, are sent using the master control borad for pacifying river 676H5 frequency converters, receive signal circuit work original with reference to the accompanying drawings
Reason, i.e. trigger board in (PCC) power（Driving plate）On connector interface --- the interface of 17CN connectors（Such as the institute of accompanying drawing 3
Show）It is the only way which must be passed that master control borad sends and receives signal, so being extracted voltage feedback signal by this connector interface
Come, carrying out logic by automatic detection device of the present invention concludes combination, obtains testing result.
Concrete operating principle of the present invention is as follows：
The precharge switching signal that the master control borad of peace river 676H5 frequency converters is actually sent out is DC24V voltage switch signals, while passing
It is sent in Fig. 2（to 17CN）A ports, b ports（A ports are directly to connect with c ports）, a ports, b ports are preliminary filling TURP
The input of the MC2 repeater relay coils in the wire loop of changing-over tentaculum.Repeater relay can prevent precharge from switching
The electric current produced during contactor coil adhesive, makes the execution unit of the switching signal that master control borad sends out be damaged, described
The operating current of repeater relay coil will be much smaller than the operating current of switching contactor coil, play a part of middle amplification.
When this MC2 repeater relay coil obtains electric, the contact 17 of MC2 repeater relays and the adhesive of contact 18 are turned on, be pre-charged MC1
The wire loop of switching contactor is connected electric, then makes its main contacts（Contact 10 and contact 9, contact 12 and contact 11, contact 14
With contact 13）Connect, R1, R2, R3 precharge branch short circuit are switched it to（It is pre-charged the work of switching contactor
With）, the normal adhesive of switching contactor is such as pre-charged, then its auxiliary contact（Feedback signal contact 43, contact 44）Closure, c ends
Mouth, the connection of 2 points of d ports, make d ports have the voltage feedback signal of DC24V（For for the b ports of to 17CN, i.e. d ends
Mouth is "+", b ports are "-"）, and send voltage feedback signal back to master control borad.At the same time, then by its auxiliary contact（Feedback letter
Number contact 43, contact 44）Voltage feedback signal, DC24V feedback signals are introduced into the left side of accompanying drawing 1 respectively by d ports, b ports
The both sides port of the coil of the detection relay K1~K4 below 24V, i.e., respectively No. 1 port, No. 2 ports, No. 3 ports, No. 4
Port, No. 5 ports, No. 6 ports, No. 7 ports and No. 8 ports（I.e. logic is automatically controlled and the detection relay in decision circuitry
Coil）, and the corresponding K1~K4 in the right side of accompanying drawing 1 represents corresponding detection relay contact, BZ1~BZ4 represents counter line
Circle.By taking one group of (PCC) power as an example, control and decision logic is：If detection relay contact K1 no signals, detection relay
During coil not adhesive（That is the non-adhesive in precharge switching contactor feedback signal contact is connected）, and detect relay contact K2, inspection
Surveying relay contact K3, detection relay contact K4 has voltage feedback signal, i.e., in addition to the detection relay where K1
Corresponding detection relay all normal adhesive of coil, then detection relay contact K2, the detection in the corresponding BZ1 loops in right side
Relay contact K3, detection relay contact K4（Detect the normally opened contact of relay）Closure, and K1 is the normal of detection relay
Closed contact keeps former closure state, turns on BZ1 loops, BZ1 counters（Up counter）Start counting up plus " 1 ", represent 4 groups
The precharge switching contactor voltage feedback signal in corresponding that group of detection relay where K1 in (PCC) power（Accompanying drawing
C ports, d ports in 2 to 17CN）Do not send, that is, be pre-charged the non-adhesive of switching contactor or instantaneous mistake is put, confirm
This group of (PCC) power has 1 failure.Other group of (PCC) power operation principle is by that analogy.
Next, illustrating the specific method for extracting voltage feedback signal：The interface of 3,17CN connectors is tactile with reference to the accompanying drawings
Hair plate（Driving plate）On a connector interface, i.e. interface is denoted as the port of the four pin plug plug-in units of " a, b, c, d ", and solid
It is scheduled on trigger board（Driving plate）On, respectively with accompanying drawing 2 in two sign " to 17CN " places " a, b " ports and " c, d " end
Mouth is corresponding, and wherein a ports, b ports are to receive master control borad to send DC24V switching signals, and a ports connect positive source, b ends
Mouth connects power cathode, and c ports, d ports are to provide the Voltage Feedback sent out by the auxiliary contact of precharge switching contactor
Signal, transfers back to master control borad and is used, meanwhile, a ports are that direct circuit is connected with c ports, it is clear that as long as it is anti-to be used for voltage
The d ports of feedback signal and the common port of DC24V（Negative pole）B ports（Wherein d ports connect positive source, and b ports connect power cathode）
Required voltage feedback signal is extracted by drawing the current potential that both form.
Connector preparation method in automatic detection device of the present invention is as follows：
In order to meet the extraction of original function and voltage feedback signal simultaneously, according to trigger board in the prior art（Driving plate）On
17CN connectors specific full pattern：With a, b, c, D-shaped formula word order（See accompanying drawing 3）, originally it is inserted in trigger board（Driving plate）
The pin plug plug-in unit of 17CN connectors four on four pin jack plugs it need to temporarily be pulled up, set up a separated time connector, be
The four pin connectors supporting with 17CN connectors.4 are first drawn at four this end of pin jack connector of separated time connector（A pins port,
B pins port, c pins port, d pins port）While root wire, then 2 wires are terminated out from d pins port, b pins port, respectively
The coil two ends of the detection relay being connected to shown in accompanying drawing 1, then insert four pins of 6 separated time connectors of wire of common extraction
Plug-in unit this end in hole is inserted in above-mentioned trigger board（Driving plate）17CN connectors four pin plug plug-in units on, and separated time connector draws
4 for going out（A pins port, b pins port, c pins port, d pins port）The other end of wire is four pin plug connectors, and is originally pulled out
Four this end of pin jack plug insertion docking of the 17CN connectors for rising, has thus reached and has taken required voltage feedback signal
The purpose for going out, and on the premise of both original function is met, and required voltage feedback signal can be extracted.
There are 4 groups of (PCC) powers in the present embodiment, the trigger board of detection need to be corresponded to（Driving plate）17CN connectors have 4 sets,
4 sets of separated time connectors are set up the need for corresponding, i.e., 4 sets separated time connectors are patched from every four pin jacks for covering separated time connector respectively
Four pins of part（A pins port, b pins port, c pins port, d pins port）After 4 wires are drawn in port, then draw（D pins port, b
Pin port）Detection relay left side DC24V that 2 wires out, are then connected respectively in accompanying drawing 1 shown below
The two ends of coil（Respectively No. 1 port, No. 2 ports, No. 3 ports, No. 4 ports, No. 5 ports, No. 6 ports, No. 7 ports and No. 8
Port）.
When carrying out automatic detection operation, only need to be by original trigger board（Driving plate）On 17CN connectors four pin jacks insert
Part is pulled up from four pin plug plug-in units, two parts respectively with four pin plugs of the separated time connector of automatic detection device of the invention
Connector and four pin jack connectors are docked.
The present invention can will show that the trouble point residing for failure code passes through within the very first time that (PCC) power breaks down
Automatic detection device displays it, and helps maintenance personal to judge rapidly, carries out maintenance work, improves maintenance work effect
Rate.
The present invention can be produced to all combinations that are open and disclosing and method by using for reference disclosure, although this hair
Bright combination and method are described by detailed implementation process, but those skilled in the art can substantially not depart from this
Method and apparatus described herein are spliced or changed in the content of the invention, spirit and scope, or is increased and decreased some parts, more
Specifically, all similar replacements and change are apparent to those skilled in the art, and they are considered as
It is included among spirit of the invention, scope and content.
Claims (5)
1. a kind of peace river frequency converter UV method for diagnosing faults, is applied to pacify river 676H5 type frequency converters, described peace river frequency converter master
To be made up of master control borad, communication board and interface, power module, guidance panel and some groups of (PCC) powers, described (PCC) power
It is main by：IGBT, resistance-capacitance absorption, afterflow protection, current detecting, cooling blower, quick fuse protection, trigger board, start resistance,
Precharge switching contactor, electric capacity and input/output interface are constituted, it is characterised in that described method for diagnosing faults step is as follows：
（1）Precharge switching contactor adhesive feelings are extracted by the connector interface set in the trigger board in the (PCC) power
The voltage feedback signal of condition；
（2）Some groups of (PCC) powers are respectively equipped with corresponding detection relay, and are provided with accordingly and the detection relay
The counter loop of contact portion, the contact of the detection relay is divided into the normally opened contact and detection relay of detection relay
Normally-closed contact, when in some groups of described (PCC) powers it is all of precharge switching contactor all be attracting state, then with advance
The coil of the corresponding detection relay of charging switching contactor is also all attracting state, the normally-closed contact of corresponding detection relay
All disconnect and be in open-circuit condition, and the normally opened contact of corresponding detection relay is all closed and is in channel status so that phase
The normally opened contact of the detection relay connected in the same branch road of counter and the normally-closed contact of detection relay are answered, one is all formed
A disconnected, logic closed and disconnect and not counting；
（3）There is any one group of precharge switching contactor in some groups of (PCC) powers for non-attracting state, then correspond to this group pre-
The coil of the detection relay of charging switching contactor is also non-attracting state, the detection relay of this group of correspondence in counter loop
The normally-closed contact of device is maintained the original state and is in channel status, and the precharge switching of normal adhesive is contacted in some groups of (PCC) powers
The normally opened contact of the detection relay in the counter loop corresponding to device is closed and is in channel status so that corresponding counter
The normally opened contact of the detection relay connected in same branch road and the normally-closed contact of detection relay are formed fully closed logical and led
Logical, then the counter loop conducting corresponding to this group of (PCC) power, is counted, and confirms that this group of (PCC) power has 1 failure；
（4）When there is " UV " failure, the voltage feedback signal that switching contactor is pre-charged during by malfunction passes through the work(
The 17CN connector interfaces set in trigger board in rate component feed back to described master control borad, by master control borad by failure code
" UV " or UV3 " is displayed on guidance panel；
（5）Maintenance personal reads counter values, confirms it is which group power cell hair according to the numerical value change for corresponding to counter
Raw failure, carries out corresponding maintenance work.
2. the peace river frequency converter UV method for diagnosing faults according to claim 1, it is characterised in that：In the (PCC) power
The voltage feedback signal of precharge switching contactor adhesive situation be to be carried by the interface of connector set in trigger board
Take, described connector is 17CN connectors, and the external member being made up of four pin jack plugs and four pin plug plug-in units is described
Four pins are a pins, b pins, c pins, d pins, and respectively with a ports in corresponding circuit for switching signal, b ports and for voltage
The c ports of feedback signal, the connection of d port circuits, wherein described a ports and b ports are to receive mainboard to send cutting for DC24V
Signal is changed, described a ports connect positive source, described b ports and connect power cathode, meanwhile, described a ports and described c
Port direct circuit connection, described voltage feedback signal is the voltage that the current potential formed by described b ports and d ports is extracted
Feedback signal, described d ports connect positive source, and b ports connect power cathode.
3. frequency converter UV method for diagnosing faults in peace river according to claim 2, it is characterised in that：The 17CN connectors
Four pin plug plug-in units be fixed in described trigger board, described 17CN connectors are used to switch for master control borad provides to be pre-charged
The voltage feedback signal and master control borad of contacts of contactor provide switching signal to precharge switching contactor；With one group of power packages
As a example by part, the four pin connectors matched with described 17CN connectors need to be set up, be by four pin jack connectors and band a
Pin, b pins, c pins, the external member of the four pin plug connectors composition of d pins, from a pins port, the b pins of four described pin jack connectors
Port, c pins port and d pins port are respectively drawn 1 wire and are connected with four pin plug connectors of described band a pins, b pins, c pins, d pins
While connecing, then 1 wire is respectively drawn from described d pins port, b pins port, and be respectively connecting to detection relay coil K1
No. 1 port at two ends, No. 2 ports, so as to obtain the automatic inspection matched with the interface of the 17CN connectors set in trigger board
The separated time connector of device is surveyed, four pin jack plugs of the 17CN connectors are pulled up from described trigger board, insert institute
Four pin plug connectors of separated time connector are stated, and four pin jack connectors of the separated time connector are patched with the 17CN
The four pin plug plug-in units docking of part, realizes on the premise of original function is met, required voltage feedback signal being extracted
Purpose, some groups of (PCC) powers used in described frequency converter need to be correspondingly arranged the separated time connector with set group number.
4. the peace river frequency conversion that river frequency converter UV method for diagnosing faults is used is pacified in a kind of claims 1 to 3 described in any one
Device UV fault diagnosis automatic detection devices, it is characterised in that：Described automatic detection device includes information state recorder, logic
Automatically control and connect with decision circuitry, overcurrent fast-tripping protection circuit, relay indicating light, the shell with antirust and insulation function, separated time
Plug-in unit and the interface with each extraction voltage feedback signal on frequency converter, by each on described separated time connector and frequency converter
The individual interface connection for extracting voltage feedback signal, reads and switched by the precharge inside frequency converter in each (PCC) power trigger board
The voltage feedback signal of contacts of contactor feedback, then by described logic judgment and automatic control circuit, it would be desirable to counted
Several data-signals is sent to described information state recorder and is shown result automatically, and described relay indicating light is used to represent
Whether described automatic detection device is in normal operating conditions, and described overcurrent fast-tripping protection circuit is described for preventing
Automatic detection device internal over-current causes described peace river frequency converter internal short circuit fault, described information state recorder bag
Include counter loop, for recording the corresponding (PCC) power number of stoppages, the separated time connector of the automatic detection device be with
The four pin connectors that match of 17CN connectors set in trigger board, from four pin jack connectors of the separated time connector this
While 4 wires are drawn in a pins port at end, b pins port, c pins port and d pins port, also draw again from b pins port, d pins port
Go out 2 wires, four pin jack connectors of formation are provided with 6 wires, 2 wires that the b pins port, d pins port are drawn
The two ends of detection relay coil are connected to, some groups of (PCC) powers used in described frequency converter need to be correspondingly arranged with set group
Several separated time connectors and the detection relay of respective numbers.
5. frequency converter UV fault diagnosis automatic detection devices in peace river according to claim 4, it is characterised in that：It is described
Four pin plug plug-in units of 17CN connectors are fixed in described trigger board, when being detected, first by the 17CN connectors
Four pin jack plugs are pulled up, then it is docked with four pin plug connectors of the separated time connector of the automatic detection device, so
Four pins of four pin jack connectors of the separated time connector are inserted and fixed in trigger board 17CN connectors afterwards are inserted
On head plug-in unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710046022.5A CN106841862B (en) | 2017-01-22 | 2017-01-22 | Pacify river frequency converter UV method for diagnosing faults and its automatic detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710046022.5A CN106841862B (en) | 2017-01-22 | 2017-01-22 | Pacify river frequency converter UV method for diagnosing faults and its automatic detection device |
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| CN106841862B CN106841862B (en) | 2019-10-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114450033A (en) * | 2019-06-21 | 2022-05-06 | 路美康尔私人有限公司 | Method and device for monitoring the state of a high-level disinfection device |
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| CN102832794A (en) * | 2012-08-22 | 2012-12-19 | 深圳市英威腾电气股份有限公司 | Frequency converter system and fault processing method thereof |
| CN104833882A (en) * | 2015-05-13 | 2015-08-12 | 浪潮集团有限公司 | Distributed remote automatic frequency converter fault diagnosis method |
| CN105004946A (en) * | 2015-06-30 | 2015-10-28 | 深圳市汇川技术股份有限公司 | Frequency converter fault analysis system and method and frequency converter |
| CN205103329U (en) * | 2015-10-16 | 2016-03-23 | 武汉钢铁(集团)公司 | Converter fault detection system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832794A (en) * | 2012-08-22 | 2012-12-19 | 深圳市英威腾电气股份有限公司 | Frequency converter system and fault processing method thereof |
| CN104833882A (en) * | 2015-05-13 | 2015-08-12 | 浪潮集团有限公司 | Distributed remote automatic frequency converter fault diagnosis method |
| CN105004946A (en) * | 2015-06-30 | 2015-10-28 | 深圳市汇川技术股份有限公司 | Frequency converter fault analysis system and method and frequency converter |
| CN205103329U (en) * | 2015-10-16 | 2016-03-23 | 武汉钢铁(集团)公司 | Converter fault detection system |
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| CN114450033A (en) * | 2019-06-21 | 2022-05-06 | 路美康尔私人有限公司 | Method and device for monitoring the state of a high-level disinfection device |
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| CN106841862B (en) | 2019-10-25 |
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