2013年3月28日星期四
Xi'an YuanQi Elevatorparts Company: Mitsubishi Elevator PLC
Xi'an YuanQi Elevatorparts Company: Mitsubishi Elevator PLC: Modern industrial production equipment, a large number of digital and analog Mitsubishi elevator control device, for example, the motor st...
Mitsubishi Elevator PLC
Modern industrial production equipment, a large number of digital and analog Mitsubishi elevator control device, for example, the motor starts and stops, the opening and closing of the solenoid valve, product count, setting of temperature, pressure, flow, and control automatic control problems in the industrial field, a Mitsubishi Elevator programmable controller (PLC) has become one of the most effective tools to solve. PLC control system design should pay attention to the following points.
Mitsubishi Elevator programmable logic controller (PLC) programming and Mitsubishi Elevator optional:
Currently on the market Mitsubishi Elevator PLC control system, in addition to domestic brands, foreign brands: Japan OMRON, MITSUBISHI, FUJI, IDEC, HITACHI, Panasonic, Siemens, Germany, South Korea's LG and so on, how to buy Mitsubishi Elevator PLC control system products?
1. Optional Mitsubishi Elevator PLC control system programming:
Mitsubishi Elevator PLC control system programming can be taken in three ways: programming statements with the handheld programmer, of Mitsubishi Elevator PLC control system programming only with manufacturers under the table in the statement. Middle of easy-to-site commissioning and the small size and low cost, but the the Mitsubishi elevator PLC control system programming efficiency is low adapt the model type is more suitable for the system capacity, with less system. The graphics programmer programming, this approach uses a graphical programming, convenient and intuitive, the the general electrician short-term can be applied with ease, but higher prices programmer. Package Programming with IBM and IBM-compatible personal computer + Mitsubishi PLC control system, this way is the most efficient one way, is the most commonly used one, but most of the expensive package.
Try to use the products of the big companies, because the quality of their products is guaranteed, and good technical support, and after-sales service is also generally better, is conducive to future product expansion and soft and hardware upgrades.
System should first determine the control of the control system stand-alone system with Mitsubishi Elevator PLC or with Mitsubishi Elevator PLC control system to form a network, and thus calculate the input and output (I / O) points, and in the purchase of the Mitsubishi Elevator PLC control system when the reserve margin of 10% on the basis of the actual needs points.
Determine load type According to Mitsubishi Elevator PLC control system output of the load carried by DC type or exchanges type, high-current or low current, and Mitsubishi Elevator PLC control system output frequency of the action etc., which determine the output using relay output or transistor output or thyristor output. The different load selection of different output mode of the stable operation of the system is very important.
Storage capacity with the instruction execution speed is an important indicator of the PLC selection, the greater the amount of general storage, faster PLC the higher prices, foreign manufacturers products are much the same, but also have some differences.
6. "COM" point selection,
Different PLC product, the "COM" number of points is not the same, some a "COM" points with eight output points, some with four output points, also with one or two output points. When the load of many kinds and large current, a "COM" output points with a 1-2 point less number of load type for a long time, the use of a "COM" point with 4-8 output point.
Manufacturers developed different software focus systematically compatibility when purchasing, yet did not find completely compatible products, the product should be based on a systematic and rational choice Mitsubishi Elevator PLC control system.
Second, the expansion module optional
For small systems, such as the 80 points within the system, generally do not need to be extended; When the system is large, it is necessary expansion. Products of different companies, the system is the total number of points and the number of expansion modules have a limit, when the expansion still can not meet the needs, can be a network structure. Individual instructions of the same time, some manufacturers do not support expansion modules, therefore, to pay attention during the software programming. When the temperature analog modules, the manufacturers also have some of the provisions, see related technical manuals.
Mitsubishi Elevator PLC control system network design
Mitsubishi Elevator PLC control system network design, its difficulty is much greater than the PLC stand-alone control, she was more familiar with the models should be used first, have a more in-depth understanding of their basic instruction and function of instruction, and the instruction execution speed and user program storage capacity should also be careful to understand. Otherwise can not meet the real-time requirements, resulting in a system crash. In addition to the communication interface, the communication protocol, the data transmission rate must be considered.
Finally, to Mitsubishi Elevator PLC control system manufacturers to seek network design and software support and detailed technical information, As for the selection of several layers of workstations, in accordance with the size of the system.
Fourth, the software development
Selected Mitsubishi Elevator PLC control system product specification before in preparation software, you should first become familiar with, and to be familiar with and then programming. The use of graphical programming package programming, can be programmed directly, handheld programmer programming should draw ladder, then programming, so you can reduce errors, speed is also fast compiled completed after the first air operation until each action is normal, and then debugging on the device.
1 power circuit
Mitsubishi Elevator PLC control system powered AC85-240V (DC24V) to adapt to a wide power range, but for anti-jamming, power-purifying element (such as the power supply filter, 1:1 isolation transformer should be retrofitted)
Mitsubishi Elevator PLC control system DC24V power use
Each company Mitsubishi Elevator PLC control system products generally have DC24V power, but the power supply capacity is small, for tens of milliamps to several hundred milliamps, should pay attention to use it with a load capacity, at the same time do a good job against short circuit measures (because overload or short-circuit of the power supply will affect the run of the of Mitsubishi Elevator PLC control system).
3 external DC24V power
If the input circuit the DC24V power proximity switches, photoelectric switches, etc., and not enough the DC24V power capacity Mitsubishi Elevator PLC control system, from external DC24V power; but the power of the "not" end with the PLC DC24V power "and" COM "terminals connected, otherwise it will affect the run of the of Mitsubishi Elevator PLC control system.
4. Input sensitivity
Manufacturers of of Mitsubishi Elevator PLC control system input voltage and current regulations, when the maximum input current or leakage current of the input element of the input current is greater than the Mitsubishi PLC control system, there will be a malfunction, reducing sensitivity. So shall apply the weak current input and leakage current to take protective measures, and the selection of the input for sink input Mitsubishi Elevator PLC control system.
Two-wire sensor (photoelectric switches, non-contact switch) LED limit switch input leakage current will generate input error or lights countermeasures bleeder resistor to reduce the input impedance for the connection resistance deduced from Figure 1 in the formula:
Transistor or triac output, received a greater impact on current equipment, it is necessary to consider the protection transistor and thyristor. The transistor and the thyristor can withstand the impact of current of 10 times the rated current, if exceeded, according to Figure 2, one of the Figure 3 to reduce it:
5. Inductive load handling
Input and output termination inductive load, surge suppressors or diode in parallel across the load a pole side of the cathode of the diode voltage (x) is connected.
6 external interlock with ground
Mitsubishi PLC control system to control the motor reversing, causing accidents and mechanical damage, should form a chain in the external loop counter-action, to avoid abnormal operation of the PC.
Ground: GR terminal earth ground terminal. Used to prevent the induction of dedicated ground wire (cross-sectional area of 2mm2 wire) and a third grounding method (grounding resistance of 100Ω or less).
LG is the noise filter neutral terminal, a malfunction due to noise, or in order to prevent electric shock, LG and GR shorted, the third ground. The length of the ground line is preferably within 20m.
The ground wire with other devices sharing or connection with the metal structure of the building will be counterproductive, adversely affecting.
7 Mitsubishi Elevator PLC control system external drive circuit
Mitsubishi Elevator PLC control system output can not directly drive the load must be used in the external drive circuit can be driven with a solid-state relay or thyristor circuit, and should be used to protect the circuit and surge absorption circuit.
Mitsubishi Elevator programmable logic controller (PLC) programming and Mitsubishi Elevator optional:
Currently on the market Mitsubishi Elevator PLC control system, in addition to domestic brands, foreign brands: Japan OMRON, MITSUBISHI, FUJI, IDEC, HITACHI, Panasonic, Siemens, Germany, South Korea's LG and so on, how to buy Mitsubishi Elevator PLC control system products?
1. Optional Mitsubishi Elevator PLC control system programming:
Mitsubishi Elevator PLC control system programming can be taken in three ways: programming statements with the handheld programmer, of Mitsubishi Elevator PLC control system programming only with manufacturers under the table in the statement. Middle of easy-to-site commissioning and the small size and low cost, but the the Mitsubishi elevator PLC control system programming efficiency is low adapt the model type is more suitable for the system capacity, with less system. The graphics programmer programming, this approach uses a graphical programming, convenient and intuitive, the the general electrician short-term can be applied with ease, but higher prices programmer. Package Programming with IBM and IBM-compatible personal computer + Mitsubishi PLC control system, this way is the most efficient one way, is the most commonly used one, but most of the expensive package.
Try to use the products of the big companies, because the quality of their products is guaranteed, and good technical support, and after-sales service is also generally better, is conducive to future product expansion and soft and hardware upgrades.
System should first determine the control of the control system stand-alone system with Mitsubishi Elevator PLC or with Mitsubishi Elevator PLC control system to form a network, and thus calculate the input and output (I / O) points, and in the purchase of the Mitsubishi Elevator PLC control system when the reserve margin of 10% on the basis of the actual needs points.
Determine load type According to Mitsubishi Elevator PLC control system output of the load carried by DC type or exchanges type, high-current or low current, and Mitsubishi Elevator PLC control system output frequency of the action etc., which determine the output using relay output or transistor output or thyristor output. The different load selection of different output mode of the stable operation of the system is very important.
Storage capacity with the instruction execution speed is an important indicator of the PLC selection, the greater the amount of general storage, faster PLC the higher prices, foreign manufacturers products are much the same, but also have some differences.
6. "COM" point selection,
Different PLC product, the "COM" number of points is not the same, some a "COM" points with eight output points, some with four output points, also with one or two output points. When the load of many kinds and large current, a "COM" output points with a 1-2 point less number of load type for a long time, the use of a "COM" point with 4-8 output point.
Manufacturers developed different software focus systematically compatibility when purchasing, yet did not find completely compatible products, the product should be based on a systematic and rational choice Mitsubishi Elevator PLC control system.
Second, the expansion module optional
For small systems, such as the 80 points within the system, generally do not need to be extended; When the system is large, it is necessary expansion. Products of different companies, the system is the total number of points and the number of expansion modules have a limit, when the expansion still can not meet the needs, can be a network structure. Individual instructions of the same time, some manufacturers do not support expansion modules, therefore, to pay attention during the software programming. When the temperature analog modules, the manufacturers also have some of the provisions, see related technical manuals.
Mitsubishi Elevator PLC control system network design
Mitsubishi Elevator PLC control system network design, its difficulty is much greater than the PLC stand-alone control, she was more familiar with the models should be used first, have a more in-depth understanding of their basic instruction and function of instruction, and the instruction execution speed and user program storage capacity should also be careful to understand. Otherwise can not meet the real-time requirements, resulting in a system crash. In addition to the communication interface, the communication protocol, the data transmission rate must be considered.
Finally, to Mitsubishi Elevator PLC control system manufacturers to seek network design and software support and detailed technical information, As for the selection of several layers of workstations, in accordance with the size of the system.
Fourth, the software development
Selected Mitsubishi Elevator PLC control system product specification before in preparation software, you should first become familiar with, and to be familiar with and then programming. The use of graphical programming package programming, can be programmed directly, handheld programmer programming should draw ladder, then programming, so you can reduce errors, speed is also fast compiled completed after the first air operation until each action is normal, and then debugging on the device.
1 power circuit
Mitsubishi Elevator PLC control system powered AC85-240V (DC24V) to adapt to a wide power range, but for anti-jamming, power-purifying element (such as the power supply filter, 1:1 isolation transformer should be retrofitted)
Mitsubishi Elevator PLC control system DC24V power use
Each company Mitsubishi Elevator PLC control system products generally have DC24V power, but the power supply capacity is small, for tens of milliamps to several hundred milliamps, should pay attention to use it with a load capacity, at the same time do a good job against short circuit measures (because overload or short-circuit of the power supply will affect the run of the of Mitsubishi Elevator PLC control system).
3 external DC24V power
If the input circuit the DC24V power proximity switches, photoelectric switches, etc., and not enough the DC24V power capacity Mitsubishi Elevator PLC control system, from external DC24V power; but the power of the "not" end with the PLC DC24V power "and" COM "terminals connected, otherwise it will affect the run of the of Mitsubishi Elevator PLC control system.
4. Input sensitivity
Manufacturers of of Mitsubishi Elevator PLC control system input voltage and current regulations, when the maximum input current or leakage current of the input element of the input current is greater than the Mitsubishi PLC control system, there will be a malfunction, reducing sensitivity. So shall apply the weak current input and leakage current to take protective measures, and the selection of the input for sink input Mitsubishi Elevator PLC control system.
Two-wire sensor (photoelectric switches, non-contact switch) LED limit switch input leakage current will generate input error or lights countermeasures bleeder resistor to reduce the input impedance for the connection resistance deduced from Figure 1 in the formula:
Transistor or triac output, received a greater impact on current equipment, it is necessary to consider the protection transistor and thyristor. The transistor and the thyristor can withstand the impact of current of 10 times the rated current, if exceeded, according to Figure 2, one of the Figure 3 to reduce it:
5. Inductive load handling
Input and output termination inductive load, surge suppressors or diode in parallel across the load a pole side of the cathode of the diode voltage (x) is connected.
6 external interlock with ground
Mitsubishi PLC control system to control the motor reversing, causing accidents and mechanical damage, should form a chain in the external loop counter-action, to avoid abnormal operation of the PC.
Ground: GR terminal earth ground terminal. Used to prevent the induction of dedicated ground wire (cross-sectional area of 2mm2 wire) and a third grounding method (grounding resistance of 100Ω or less).
LG is the noise filter neutral terminal, a malfunction due to noise, or in order to prevent electric shock, LG and GR shorted, the third ground. The length of the ground line is preferably within 20m.
The ground wire with other devices sharing or connection with the metal structure of the building will be counterproductive, adversely affecting.
7 Mitsubishi Elevator PLC control system external drive circuit
Mitsubishi Elevator PLC control system output can not directly drive the load must be used in the external drive circuit can be driven with a solid-state relay or thyristor circuit, and should be used to protect the circuit and surge absorption circuit.
2013年3月26日星期二
Xi'an YuanQi Elevatorparts Company: Thyssen Elevator Inverter CPIK15M1
Xi'an YuanQi Elevatorparts Company: Thyssen Elevator Inverter CPIK15M1: Thyssen Elevator Inverter CPIK15M1 unique field, automatic torque boost function in the elevator drag to get good comfort and stability. Acc...
Thyssen Elevator Inverter CPIK15M1
Thyssen Elevator Inverter CPIK15M1 unique field, automatic torque boost function in the elevator drag to get good comfort and stability. Acceptable controller such as a PLC multi-speed frequency command or analog voltage, current command; through self learning to adapt to a variety of motor and get a good vector control characteristics; low speed the excellent smooth start; hardware reliability and highly cost-effective .
The basic principle of the VVVF type elevator
According to the motor theory, the AC motor speed formula:
n = 60f (1-s) / p
In the above formula: f is the power supply frequency of the stator; p is the number of pole pairs;
s is the slip; n is speed.
Therefore, the AC motor speed control method following:
(1) to change the motor pole number p, the motor speed can be changed. AC double-speed ladder governor.
(2) is changed by adjusting the size of the stator winding voltage to the slip s, in order to achieve the speed control purposes. AC variable speed ladder governor.
(3) changing the the stator power frequency f can also achieve speed control purposes, but f not exceed the maximum rated motor frequency. Elevator as a constant torque load speed in order to maintain maximum torque unchanged, according to the torque formula the M = CmФIcosφ in Cm motor constant, I is the rotor current, Ф for the motor air gap flux, cosφ rotor power factor. Must remain the Ф constant, again based on the voltage equation U = 4.44fWkФ, where U is the stator voltage, f is the frequency of the stator voltage, W of stator winding turns, k is the motor constant, must maintain the U / f is constant, i.e. Thyssen Elevator VVVF inverter must both two functions referred to as the VVVF (Vary Voltage Vary Frequency) type Thyssen inverter, which is the basic control principle VVVF elevator.
Select power and other accessories
Usually the Thyssen drive in an elevator application also need the brake unit with the braking resistor, to obtain a sufficient braking torque during the regeneration state; also need to configure the the PG speed card encoder the speed feedback signal; generator operation in the long term and other special places also need to configure the AC reactor. ThyssenKrupp Elevator the inverter generally in accordance with the motor power amplifier with a choice, in order to Thyssen inverter control performance, general the Thyssen Elevator Inverter CPIK15M1 power shall satisfy the following formula:
The Thyssen Elevator Inverter CPIK15M1 power ≥ K × 1.732 × Vm × Im
Which current waveform correction coefficient, K, Vm rated motor voltage, Im is the motor rated current.
The choice of the brake unit
The Thyssen Elevator Inverter CPIK15M1 applications when rising car no-load or reload decline, the drag system exists potential load decentralization. The motor will be in the running state of regenerative braking energy flow to the DC link by the inverter link in parallel diode to charge the filter capacitor motor feedback. When the feedback energy is large, it will cause the DC link voltage rises failure, motor rapid deceleration will cause the above phenomenon.
The solution is the Thyssen Elevator Inverter CPIK15M1 DC link shunt braking unit and braking resistor. The braking unit is an optional component of the Thyssen drive, equipped to detect and control circuit, its work Thyssen inverter DC link voltage line detection. When the voltage exceeds the allowable value set, the trigger brake transistor is turned on, the release of energy through the resistor to maintain Thyssen Elevator Inverter CPIK15M1 DC bus voltage within the normal operating range, a braking unit several resistors in parallel, as the conditions .
Resistor selection
Resistor selection is very important, resistor selection is too large braking torque resistance is chosen too small too much current, resistance heating, and other issues are difficult to resolve. General power of resistance and resistance we recommend lifting height larger, higher motor speed can be properly reduced resistance to higher braking torque, the minimum can not meet the braking torque, to be replaced a power Thyssen inverter.
Braking unit and braking resistor selection should be based on the feedback of the largest energy and time. The general braking resistor should be chosen so the brake current Is not exceed the Thyssen drive rated current Ie, the maximum power of the braking resistor Pmax is less than 1.5 times the Thyssen Elevator Inverter CPIK15M1 power, then multiplied by the overload factor . Overload factor related to the deceleration time and continuous braking time specific to the manufacturers to provide resistance overload factor and parameter sample.
The using braking resistor consumption motor regenerative braking energy back to the DC circuit, Thyssen inverter manufacturers usually provide the user optional - braking unit and braking resistor. The braking process, when the circuit DC voltage is higher than the normal voltage of 70V, the IGBT in the brake unit, the DC chopper, so that the braking resistor current flowing through the regenerative power consumption.
PG Card
PG card generally select PG-B2, only encoder line encoder pulse output or need 2000p / r PG-X2 speed card frequency output can provide a maximum of 32 points available for the controller count.
Optical encoder
Use incremental 600p / r, push-pull amplifier output A phase B phase Z relative to the origin of the signal, shaft diameter 8mm hollow encoder.
System components
A hardware configuration of the system shown in Figure 1, is constituted mainly by the following parts:
iAStar Elevator Thyssen Elevator Inverter CPIK15M1 can achieve smooth operation and precise control of the motor to achieve the desired output. And PG, U / f control, vector control without PG, PG U / f control, PG vector control, four control integration, which PG vector control is the most suitable elevator control requirements. The capacity options best freshman magnitude optional, elevator motors general election llkW or 15kW asynchronous motor. 11kW motor election 15kW inverter Thyssen the 15kW motor elect 18kW inverter Thyssen.
Thyssen inverter parameter settings
As a result of the PLC logic control components, so the the Thyssen Elevator Inverter CPIK15M1 and PLC communication when using switch instead of analog. Here are a few main parameters settings: In order to reduce the start-impact and increase passenger comfort, speed loop speed control system should be proportional coefficient smaller integration time constant should be larger C5-01 = 5 was chosen , C5-02 = 2s. In order to improve operational efficiency, the express train frequency should be selected as the power frequency, and crawling frequency as low as possible to minimize the impact of parking Dl-02 = 50Hz was chosen Dl-= 5Hz.
Overhaul the slow frequency optional Dl-09 = 12Hz. While "S" curve characteristic prevents the start of the vibration generated when the change speed or stop, which is most applicable in the elevator, can greatly improve the ride comfort. In addition, fault diagnosis, detection, memory and other functions of the Thyssen Elevator Inverter CPIK15M1 system maintenance is also very convenient and practical. In order to ensure the accuracy and reliability of operation of flat layers, the traction motor speed control should be a closed loop, its rotational speed detected by the motor coaxial rotation of the rotary encoder is complete. Must ensure that the concentricity and reliability of the connection of the rotary encoder and the electric motor, in order to ensure the accuracy of the speed sampling. Thyssen inverter other commonly used parameters can be entered directly under the grid voltage and motor nameplate parameters. Elevator operation ideal curve shown in Figure 2.
Thyssen Elevator Inverter CPIK15M1 work in the best condition, after the completion of the parameter settings, you need to make the Thyssen inverter motor driven self-learning: traction mechanism drive wheels and the motor shaft from the The motor is unloaded, and then start the motor, the the Thyssen Elevator Inverter CPIK15M1 can automatically identify and store the relevant parameters of the motor, Thyssen inverter optimal control of the motor. At this point, the Thyssen Elevator Inverter CPIK15M1 parameters are set.
The basic principle of the VVVF type elevator
According to the motor theory, the AC motor speed formula:
n = 60f (1-s) / p
In the above formula: f is the power supply frequency of the stator; p is the number of pole pairs;
s is the slip; n is speed.
Therefore, the AC motor speed control method following:
(1) to change the motor pole number p, the motor speed can be changed. AC double-speed ladder governor.
(2) is changed by adjusting the size of the stator winding voltage to the slip s, in order to achieve the speed control purposes. AC variable speed ladder governor.
(3) changing the the stator power frequency f can also achieve speed control purposes, but f not exceed the maximum rated motor frequency. Elevator as a constant torque load speed in order to maintain maximum torque unchanged, according to the torque formula the M = CmФIcosφ in Cm motor constant, I is the rotor current, Ф for the motor air gap flux, cosφ rotor power factor. Must remain the Ф constant, again based on the voltage equation U = 4.44fWkФ, where U is the stator voltage, f is the frequency of the stator voltage, W of stator winding turns, k is the motor constant, must maintain the U / f is constant, i.e. Thyssen Elevator VVVF inverter must both two functions referred to as the VVVF (Vary Voltage Vary Frequency) type Thyssen inverter, which is the basic control principle VVVF elevator.
Select power and other accessories
Usually the Thyssen drive in an elevator application also need the brake unit with the braking resistor, to obtain a sufficient braking torque during the regeneration state; also need to configure the the PG speed card encoder the speed feedback signal; generator operation in the long term and other special places also need to configure the AC reactor. ThyssenKrupp Elevator the inverter generally in accordance with the motor power amplifier with a choice, in order to Thyssen inverter control performance, general the Thyssen Elevator Inverter CPIK15M1 power shall satisfy the following formula:
The Thyssen Elevator Inverter CPIK15M1 power ≥ K × 1.732 × Vm × Im
Which current waveform correction coefficient, K, Vm rated motor voltage, Im is the motor rated current.
The choice of the brake unit
The Thyssen Elevator Inverter CPIK15M1 applications when rising car no-load or reload decline, the drag system exists potential load decentralization. The motor will be in the running state of regenerative braking energy flow to the DC link by the inverter link in parallel diode to charge the filter capacitor motor feedback. When the feedback energy is large, it will cause the DC link voltage rises failure, motor rapid deceleration will cause the above phenomenon.
The solution is the Thyssen Elevator Inverter CPIK15M1 DC link shunt braking unit and braking resistor. The braking unit is an optional component of the Thyssen drive, equipped to detect and control circuit, its work Thyssen inverter DC link voltage line detection. When the voltage exceeds the allowable value set, the trigger brake transistor is turned on, the release of energy through the resistor to maintain Thyssen Elevator Inverter CPIK15M1 DC bus voltage within the normal operating range, a braking unit several resistors in parallel, as the conditions .
Resistor selection
Resistor selection is very important, resistor selection is too large braking torque resistance is chosen too small too much current, resistance heating, and other issues are difficult to resolve. General power of resistance and resistance we recommend lifting height larger, higher motor speed can be properly reduced resistance to higher braking torque, the minimum can not meet the braking torque, to be replaced a power Thyssen inverter.
Braking unit and braking resistor selection should be based on the feedback of the largest energy and time. The general braking resistor should be chosen so the brake current Is not exceed the Thyssen drive rated current Ie, the maximum power of the braking resistor Pmax is less than 1.5 times the Thyssen Elevator Inverter CPIK15M1 power, then multiplied by the overload factor . Overload factor related to the deceleration time and continuous braking time specific to the manufacturers to provide resistance overload factor and parameter sample.
The using braking resistor consumption motor regenerative braking energy back to the DC circuit, Thyssen inverter manufacturers usually provide the user optional - braking unit and braking resistor. The braking process, when the circuit DC voltage is higher than the normal voltage of 70V, the IGBT in the brake unit, the DC chopper, so that the braking resistor current flowing through the regenerative power consumption.
PG Card
PG card generally select PG-B2, only encoder line encoder pulse output or need 2000p / r PG-X2 speed card frequency output can provide a maximum of 32 points available for the controller count.
Optical encoder
Use incremental 600p / r, push-pull amplifier output A phase B phase Z relative to the origin of the signal, shaft diameter 8mm hollow encoder.
System components
A hardware configuration of the system shown in Figure 1, is constituted mainly by the following parts:
iAStar Elevator Thyssen Elevator Inverter CPIK15M1 can achieve smooth operation and precise control of the motor to achieve the desired output. And PG, U / f control, vector control without PG, PG U / f control, PG vector control, four control integration, which PG vector control is the most suitable elevator control requirements. The capacity options best freshman magnitude optional, elevator motors general election llkW or 15kW asynchronous motor. 11kW motor election 15kW inverter Thyssen the 15kW motor elect 18kW inverter Thyssen.
Thyssen inverter parameter settings
As a result of the PLC logic control components, so the the Thyssen Elevator Inverter CPIK15M1 and PLC communication when using switch instead of analog. Here are a few main parameters settings: In order to reduce the start-impact and increase passenger comfort, speed loop speed control system should be proportional coefficient smaller integration time constant should be larger C5-01 = 5 was chosen , C5-02 = 2s. In order to improve operational efficiency, the express train frequency should be selected as the power frequency, and crawling frequency as low as possible to minimize the impact of parking Dl-02 = 50Hz was chosen Dl-= 5Hz.
Overhaul the slow frequency optional Dl-09 = 12Hz. While "S" curve characteristic prevents the start of the vibration generated when the change speed or stop, which is most applicable in the elevator, can greatly improve the ride comfort. In addition, fault diagnosis, detection, memory and other functions of the Thyssen Elevator Inverter CPIK15M1 system maintenance is also very convenient and practical. In order to ensure the accuracy and reliability of operation of flat layers, the traction motor speed control should be a closed loop, its rotational speed detected by the motor coaxial rotation of the rotary encoder is complete. Must ensure that the concentricity and reliability of the connection of the rotary encoder and the electric motor, in order to ensure the accuracy of the speed sampling. Thyssen inverter other commonly used parameters can be entered directly under the grid voltage and motor nameplate parameters. Elevator operation ideal curve shown in Figure 2.
Thyssen Elevator Inverter CPIK15M1 work in the best condition, after the completion of the parameter settings, you need to make the Thyssen inverter motor driven self-learning: traction mechanism drive wheels and the motor shaft from the The motor is unloaded, and then start the motor, the the Thyssen Elevator Inverter CPIK15M1 can automatically identify and store the relevant parameters of the motor, Thyssen inverter optimal control of the motor. At this point, the Thyssen Elevator Inverter CPIK15M1 parameters are set.
2013年3月25日星期一
Xi'an YuanQi Elevatorparts Company: The advantage of permanent magnet synchronous trac...
Xi'an YuanQi Elevatorparts Company: The advantage of permanent magnet synchronous trac...: (1) low wear. traction machine for elevators , the biggest advantage is that there is no transmission structure, in addition to the rotor ...
The advantage of permanent magnet synchronous traction machines for elevators
(1) low wear. traction machine for elevators, the biggest advantage is that there is no transmission structure, in addition to the rotor shaft (it is also a traction axis) on a set of bearings, never any mechanical wear, no wear and tear, the natural extension of the drag lead the life of the machine. (2) energy-saving. The gearless traction machine because there is no transmission structure, there is no mechanical power loss, relatively speaking, it saves energy and running expenses. Load 1000kg elevator speed of 1.00m / s VVVF elevators, for example: OTIS gear traction machine (the traction ratio 1:1) need to 11kW; Weber gearless machine (traction ratio of 2:1) Just 6.7kW. (3) ease of installation. Drag wheel is fixed directly to the shaft of the motor, compact structure and small size, light weight, ease of lifting and transportation, on-site installation will be easier and more still load 1000kg, elevator speed 1.00m / s VVVF elevators, for example:OTIS gear traction machine 17CT, weight 1300kg; Weber gearless machine the WEB-1.0-1000, weight 300kg. (4) running smoothly. The absence of transmission structure, there is no belt drive lost turn, slip, elevator leveling of high precision, reliable operation; there is no gear noise and vibration, and thus the performance of the lift running smoothly, low noise, which is Elevator green revolution the salient features. (5) fuel efficient. Gearless traction machine Since no transmission structure, it eliminates the need for traditional deceleration box lubricants, only a sufficient amount of grease in the bearing memory. Daily lubrication replacement cumbersome Maintenance does not exist, and also to avoid the pollution lubricant leakage and maintenance difficulty, but also saves the lubricating oil costs. (6) is easy to use. Gearless traction machine for elevators with no liquid lubricants, there is no leak, not only there is no pollution, and can be any gesture installation, such as bottom-up hanging at the roof of the hoistway.
2013年3月24日星期日
Xi'an YuanQi Elevatorparts Company: The fault of OTIS elevator pcb RCB-II
Xi'an YuanQi Elevatorparts Company: The fault of OTIS elevator pcb RCB-II: 1. An elevator at runtime to not open the door of the flat layer, MCB board DIF lamp is not lit, replace the MCB board . 2. Elevator Expre...
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