Application Research of the hottest delta inverter

2022-07-30
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Research on the application of delta inverter in elevator industry Abstract: This paper mainly discusses the application of delta VL series inverter in elevator industry, and describes in detail the commissioning control process of an elevator factory in Suzhou. Engineering practice has proved that delta VL series frequency converter can reflect good speed regulation performance and stability when applied to elevator control, which is worthy of promotion in the industry

key words: frequency converter; Solenoid valve; encoder; Motor parameters

1 introduction

elevator is a complex, electromechanical, special equipment that provides transportation services for high-rise buildings. With the continuous development of urban construction, the number of high-rise buildings is increasing, the demand for elevators in the national economy and life is growing, and people have higher and higher requirements for elevators. Such as stable operation, perfect appearance, safety, environmental protection and energy saving

the most remarkable feature of elevator drive is that the potential energy drives the load, which requires the motor to operate in four quadrants. The elevator frequently starts the load. It is required to meet the heavy load conditions, such as stable starting, speed changing and reversing without impact (good comfort), high leveling accuracy (accurate positioning) and large low-speed torque. In other words, the elevator drive has comprehensive high-level technical requirements for the operation capacity of the frequency converter project. Elevator can be said to be the most demanding inverter application field. The control and drive of elevator system based on frequency converter is an important subject that the industry is jointly studying and facing

Delta Electromechanical has been able to provide customers with a series of products such as PLC controller, temperature controller, counter, man-machine interface, variable frequency driver, servo driver, CNC system, etc., and can provide customers with perfect and reliable electromechanical integration solutions. Based on the application of delta VL series inverter in the elevator industry, this paper has achieved good driving control of the elevator and achieved good results, which has been recognized by the industry peers

2 system analysis

2.1 equipment introduction

the number of elevator floors in this system is 17, The field configuration of the system is as follows:

model: vfd-185vl43a (34a)

software version: 1.06

upper computer: Wuxi motor drives silicon oil Zhongxiu wp-can3200

encoder: Heidenhain 1387

the specifications of traction machine are shown in Table 1: Table 1 specifications of permanent magnet synchronous gearless traction machine

2.2 system wiring

field host connection diagram is shown in Figure 1:

Figure 1 host connection field diagram

system wiring diagram is shown in Figure 2:

figure 2 system wiring diagram

wiring description Table 2 shows:

encoder wiring diagram is shown in Figure 3:

Figure 3 encoder wiring diagram

status of external input terminals during operation is shown in Table 3: (where 1 indicates continuity and closure; 0 indicates open circuit) table 3 status of external input terminals during operation

3 system commissioning

note: please stop the elevator to the middle floor before removing the original frequency converter

vl frequency converter adjustment steps are as follows:

step 1. Basic setting and motor parameters

a. confirm that the model code is consistent with the nameplate

b. control mode selection 8, FOC PM control mode

c. please set basic parameters

=31.83hz maximum output frequency

=31.83hz first output frequency setting 1 (base frequency/motor rated frequency)

=380v first output voltage setting 1 (base voltage/motor rated voltage)

d. please select parameter 08 to set motor parameters

=30a motor full load current (rated current)

=13.3kw motor rated power

=191r/min motor rated speed

=20 motor poles

e. please select the parameter 10 group to set the encoder parameter

=3 encoder type

=2048 pulse wave number generated by the encoder per revolution

=1 encoder input type

step 2: automatic measurement of motor parameters

press the Pu key and the Pu light will be on

enter when the parameter is set to 2, press run to perform automatic measurement of motor parameters. (please note that the factory setting of the multi-function input terminal MI8 is "40. The hardness of the driver enabling cloth needs to be measured with a microscope". Before it is matched with the upper computer signal, please change the factory setting of this terminal to = "0" before pressing the run button. At this time, the operation can be carried out. If the "driver enabling" input function is required during the formal test run, please replace the MI with the original part 8 and set it to 40.)

the brake does not need to be released for this automatic measurement. However, if a solenoid valve is installed between the driver and the motor, the solenoid valve shall be turned on

in the process of automatic measurement, the operation panel will display the auto tuning warning. When the warning message disappears, it means that the parameter measurement has been completed and the results have been stored in and, where are the stator resistance and stator inductance

step 3: automatic encoder origin detection

the entry parameter is set to 1. Press run to perform automatic encoder origin detection

please note that before performing this test, confirm that the solenoid valve and mechanical brake have been released

if conditions permit, please perform this learning under no-load motor to obtain the most accurate results

if the condition is not allowed, the carriage shall swing the balanced load before performing this test

if these conditions are not allowed, please set the parameter =3 and press run. The motor can self learn the encoder offset angle under full load, but the motor needs to run for 3 cycles. Omit the complex work of lifting the box and balancing the load

specific steps:

1, =3

2, input terminal: multi-stage speed one MI1, multi-stage speed two mi2, multi-stage speed three Mi3, enabling mi8

output: solenoid valve output (RA), mechanical holding brake output (MRA), fault alarm (mo1), set frequency reached (mo2)

3, confirm - --- zero

4 =81hex (set as automatic bandwidth and zero speed servo function) first uses zero speed position control to replace the weight compensation function to adjust the torque output when the elevator starts (better zero speed position torque output can be adjusted). In addition, it is related to the coordination of and. The virtual timing should be consistent with the timing of the upper computer. If there are differences in each floor. The adjustable width shall fall just at the moment when the mechanical holding turn is opened, but the time shall not be too long

5, set =3, use the upper position to perform maintenance upward for self-learning (note that there may be runaway due to external reasons)

during the automatic measurement, the operation panel will display an auto tuning-- fault code 25 warning. When the warning message disappears, it means that the measurement is over. Please release the external maintenance button immediately, otherwise there may be a danger of runaway. The results have been saved (it is recommended to perform at least three times and compare them. If the values of the three times are close, the third tuning value can be used. If the results differ by more than 3 degrees each time, please stop the operation and contact us)

please note that during this learning, the motor operation direction is FWD. If the direction operation is opposite to the upper and lower directions defined by the customer, please change the motor wiring. For example, UVW is changed to uwv, and learn again after the change

when the operator displays "auto tuning err", it means that the detection fails. Please check whether the PG wiring is properly connected

when "PG FBK error" is displayed, please change the setting. If the original setting is that phase A is ahead of phase B, please change it to that phase B is ahead of phase a, and vice versa

please set the parameters (elevator speed), (turntable diameter), (suspension ratio), etc. according to the actual field data

=700, brake voltage level

step 4 Running speed curve setting

confirm the total number of sections of speed (high speed, medium speed, low speed, crawling, maintenance, floor self-learning)

multi section speed setting ~

confirm the setting of each section of speed and the action sequence (MI1, mi2, Mi3) of the terminal corresponding to the multi-function input command

acceleration and deceleration time setting ~ (it is recommended to set the deceleration time to a smaller value during the test run, and conduct comfort debugging after all the sequence is determined)

s curve~ (it is recommended to set the S-curve time to 0 during the test run, and then conduct comfort debugging after all the time sequences are determined)

step 5. Test run

test run at the maintenance speed, and observe whether the motor operates normally. At the same time, observe whether the multi-function output and input terminal actions of the driver, such as brake release and solenoid valve conduction, are consistent with the timing of the upper computer

for the first operation, please reduce the original speed setting first. Set the speed to the normal speed after observing several operations

step 6. Comfort debugging

slightly adjust the inertia value of the elevator and observe the overall elevator operation until the torque output of the driver meets the system requirements; Fine tune the parameters,, and constant speed bandwidth to achieve better speed following

adjust the parameters (s deceleration arrival time setting S5 enabling switching frequency) and (s deceleration arrival time setting S5) to obtain better parking comfort and accurate leveling position

poor leveling can be solved quickly by modifying the crawling speed

4 parameter setting and operation effect

(1) system parameter setting is shown in Table 4: Table 4 system parameter setting

(2) operation effect diagram

uplink diagram is shown in accordance with gb/t7689.5 ⑵ 001 Experimental methods for woven fabrics of reinforcing materials Part 5 Determination type of tensile breaking strength and elongation of glass fiber 14 is shown as follows:

Figure 4 system operation upward diagram

downward diagram is shown as Figure 5:

Figure 5 system operation downward diagram

after successful commissioning, the comparison of various indicators of elevator comfort with a European brand product is shown in Table 5. Table 5 Comparison of various indexes of elevator comfort with a European brand product

it can be seen from the table that various indexes of system operation comfort after commissioning have exceeded the European brand product

5 conclusion

the elevator enterprise is a rising bright star in the elevator industry. It is a well-known large Sino foreign joint venture elevator manufacturer, integrating product design and development, manufacturing and sales, installation, maintenance and decoration. Its products include passenger elevators (4m/s), non machine room elevators, sightseeing elevators, medical elevators, automobile elevators, escalators, moving sidewalks, hydraulic elevators Ten series of freight elevators. The commissioning was successful and achieved good comfort, which was positively recognized by the manufacturer and worthy of reference by domestic peers

[References]

[1] delta VL series inverter instructions, delta internal data 2006

[2] interference in inverter application and its suppression Zhai Zhangzhi China Science and Technology Expo 2009 issue 02

[3] inverter selection and application in industry Liu Jidang and other scientific and technological information 2009 issue 23

author profile:

Zhang Shuo, Senior Application Engineer of Zhongda Diantong Co., Ltd, Focusing on the R & D and integrated application of frequency converter, with rich application experience in elevator industry (end)

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