The stage amounts to the application of VE series transducer on the bridge crane
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- source:HAOYU CNC Machining
6A, electric machinery pole is counted 8 extremely, rated frequency is 50HZ, rated rotate speed is 712rpm, without coder. Hold brake in the arms to take kind of electromagnetism a powerful person, use source control of report of 3 photographs 380V. What after considering, excess load moves is likely, and the stability that moves for a long time, choose a stage to amount to VFD220V43A-2 transducer to do a test. 2.
Design of 1 main circuit amounts to transducer power to be more than 11KW type order and degree to not have as a result of the stage inside buy brake is unit, choose the buy outside matching to recommend brake unit VFDB4030 so. The mark on brake resistor manual matchs model to be 4800W/27.
2 ohm, of the resistor when considering brake function and weather are torrid medicinal powder hot property, the choice principle of brake resistor norms has the basis of two respects: Equivalent resistance maintains recommending the least resistance, power chooses to be recommend power 2 times the left and right sides. Because there is BR1K5W040(1500W/40 ohm on at hand) norms merchandise on hand, choose the resistor of 12 BR1K5W040 norms so, pass series-parallel connection join, its equivalent resistor is 30 ohm, equivalent power is 18KW. Join sketch map is shown 2 times like the graph actually. VE series transducer is electric hookup refers to a graph 3. Graph 2 outside transducer of series of 3VE of plan of plan of principle of report of VFDB4030 of buy brake unit is electric wiring 2.
Means of control of 2 transducer SVC is controlled without speed sensor vector (also call SVC to control fashion, sensorlessVC) can acquire the property that nears closed-loop control, at the same time leave out speed sensor, have inferior maintenance cost. With traditional V/Hz control is compared, without speed sensor vector control can obtain improvement low speed to run character, the speed adjustment ability that becomes laden to fall also gets ameliorative, still can obtain tall starting torsion at the same time, this is in of tall attrition and inertial load there is clear advantage in starting. As a result of these drive performance, this control technology already made the choice that drive of general constant torsion uses gradually. The stage amounts to VE series transducer to offer SVC to control fashion, full load of the need when be being started on equipment can be weighed since very good satisfaction (it is overload even, run time is very normally short) move. SVC control means is told from fundamental can acquire exceedingly good movement condition character, but premise is to obtain well and truly electric machinery parameter. VE transducer involves the relevant parameter of electric machinery to refer to next watches. Parameter expresses meaning of parameter of parameter bar code to explain electric machinery of rated voltage 05-01 is fully loaded with electric machinery of 01-02 of rated frequency of 01-01 electric machinery related VE transducer electric machinery electric machinery of 05-03 of rated power of voltaic 05-02 electric machinery is rated electric machinery of rotate speed 05-04 extremely several 05-05 electric machinery is empty Lx2 of parameter of electric machinery of Lm05-09 of parameter of electric machinery of Rr05-08 of parameter of electric machinery of Rs05-07 of parameter of voltaic 05-06 electric machinery.
Control of sequential of 3 newspapers brake is on the application that has heavy facility, machinery of general metropolis existence holds brake orgnaization in the arms, this basically is the factor that considers safe aspect. Hoisting device is mixed before the mechanical orgnaization that hold brake in the arms is held in arms the instant after loosening, produce a heavy thing extremely easily by the phenomenon that stops condition to glide (call smooth crook) , preventing smooth hook is a bridge crane the safety in controlling a system to design controls segment. Stop to be in when clog of the condole since hook in the air when, if want to rise or drop movement, the move and adopts brake orgnaization to machinery control of transducer, this is both between it is important to cooperate to appear special; Cooperate bad, appear likely transducer calls the police (overload perhaps flows too) , appear likely also the phenomenon of clog smooth hook. Be aimed at this kind of phenomenon, the stage amounts to VE transducer to develop parameter technically to go to the lavatory adjust. Use stage amounts to VE transducer muti_function output dictates the 42nd function can very good settlement this problem, specific sequential chart is shown 4 times like the graph. Graph sequential of control of 4 newspapers brake is muti_function output dictates the 42 acts that basically use control machinery to hold brake orgnaization in the arms, its condition is: Output frequency actually, export electricity actually, defer time. If should output frequency actually to be more than 02-33 to set a value, and when actual output electric current is more than 2-32 set a value, transducer begins to time, time exceeds 2-31 to set defer time, muti_function output dictates 42 with respect to the movement, open the mechanical orgnaization that hold brake in the arms; Conversely, if output frequency actually to be less than 02-33 to set a value, electric current of actual perhaps output is less than 2-32 to set a value, muti_function output dictates 42 not movement, the mechanical orgnaization that hold brake in the arms is shut. Such doing can detect effectively advocate condole electric machinery whether excitation is finished, assure to have the security of condole goods. Besides use muti_function output dictates 42, if cooperate tine unoccupied place function (7-15 tine is unoccupied place suspend time quickly / 7-16 tine is unoccupied place interrupt frequency quickly / 7-17 ages unoccupied place decelerate suspends time / 7-18 ages unoccupied place decelerate interrupts frequency) , when can eliminating machinery effectively to hold brake in the arms to loosen shake phenomenon, make start / inactive speed is more flowing. 2.
4 transducer parameter designs (1) parameter restores to give plant value: Pr.
NoMODBUSDescriptionUnitData00-020002HParameterReset9 (2) parameter of setting electric machinery: Pr.
NoMODBUSDescriptionUnitData01-000100HMaxOutputFreq.
Hz50.
0001-010101HMotor1FbaseHz50.
0001-020102HMaxOut-Volt1V380.
005-010501HMotor1RatedAAmps34.
6005-020502HMotro1RatedPKw15.
0005-030503HMotor1RatedRPM71205-040504HMotor1Poles805-050505HMotor1No-LoadAmps17.
99 attentions: Empty to 05-05 electric current, can obtain through a few kinds of means: 1. Through transducer trends computation of parameter of test electric machinery comes out (electric machinery must pull load to move) , but because this weighs equipment to cannot undertake trends since the stage,check, this kind of means cannot be used; 2. Obtain on electric machinery nameplate; 3. Empty running falls in VF mode, look carefully at transducer to export electricity; 4. Inquire manual. (3) electric machinery parameter measures: Pr.
NoMODBUSDescriptionUnitData05-000500HAuto-TuningSEL2 makes a static state measure. At present VE series transducer offers parameter of 3 kinds of electric machinery to measure way: ① trends checks, the electric machinery when electric machinery of this kind of means is measured needs to do go without carry; ② static state checks, need of this kind of means inputs electric machinery beforehand empty electric current; ③ static state checks (end of electric machinery axis has mechanical lock to decide) . Electric machinery parameter is measured after finishing, look carefully at electric machinery parameter: Pr.
NoMODBUSDescriptionUnitData05-060506HMotor1Rsohm0.
59205-070507HMotor1Rrohm0.
46405-080508HMotor1LmmH70.
005-090509HMotor1LxmH7.
6 (4) adjust control means to be SVC (vector controls) means: Pr.
NoMODBUSDescriptionUnitData00-10000AHControlMethod2 (5) adjust add slowdown time and dot to use frequency: Pr.
NoMODBUSDescriptionUnitData01-12010CH1stAccelTimesec1.
0001-13010DH1stDecelTimesec0.
5001-200114HJOGAccelTimesec1.
0001-210115HJOGDecelTimesec0.
5001-220116HJOGFrequencyHz20.
00 (6) adjust the mechanical reference point that hold brake in the arms: Pr.
NoMODBUSDescriptionUnitData02-11020BHMulti-FunRLY14202-31021FHBrakeDelayTimesec0.
20002-320220HCurrentDetect%3002-330221HSpeedAreaSet1.
0007-15070FHGEARACCTIME0.
3007-160710HGEARACCFREQ1.
5005-250519HSlipCompGain3.
00 because machinery holds brake in the arms to use contactor control, contactor power source is 220V, use relay to control so, choose RA/RC to often open contact. (7) other protection parameter: Pr.
No<MODBUSDescriptionspan>UnitData06-010601HOVstalllevelV0.
006-030603HOCALevel%25006-040604HOCNLevel%25006-12060CHTQRLIMIT25007-000700HSWBrakingLevelV730.
02.
5 load run use above parameter, undertake load moves. 0-50HZ takes the position of voltage of the generatrix when 6 tons of ships go: (1) do not run state. 500VDC; Rise 480VDC of the voltage when starting; Drop in the process 730VDC of the biggest voltage; (2) the condition that electricity exports when taking 8 tons of carry to go. Rise when starting, 70A of the biggest electric current drops 29A of the electric current when stability of 56A of the biggest electric current moves in the process. 3 last word belts carry a circumstance to issue the electric current that start to maintain in limits of 3 times rated electric current (limits of electric current of VE transducer overload is 3 times ratedder) less than, can offer the enough torsion that start; Belt carry drop line voltage maintains the biggest mother to be worth in 730VDC set in the process, made sure transducer does not appear OU calls the police; 2-11=42 function judges a condition to adopt frequency and electric current to be judged integratedly, assure to be being taken carry a circumstance to fall not to appear smooth hook phenomenon. Can satisfy a project to have heavy facility through the test the requirement that long-term and safe stability runs. CNC Milling CNC Machining