1. Additional torque
The torque that occurs on the motor shaft under additional voltage, extra load is called the extra torque of the motor.
2. Starting torque
The torque generated by the motor at the moment when a voltage is applied to the motor in a stopped condition is called the starting torque. The starting torque characterizes the starting ability of the motor, which is related to the starting mode (such as step-down starting, AC servo motor frequency conversion speed regulation starting, winding motor series resistance starting, etc.).
For the directly started squirrel cage motor, the starting torque is generally 0.8-2.2 times of the additional torque. In general, the starting torque should be more than 1.25 times the additional torque, and the corresponding starting current should be 5-6 times the additional current.
For large DC servo motors, the starting torque is particularly large, so the starting current is also very large, so the large Guangzhou DC servo motor should not be started directly, and the voltage should be reduced. The exception is small Shenzhen DC servo motors and permanent magnet servo motors.
3. Large torque
*The high torque is the boundary between the stable and non-stable areas of the motor torque. If the load torque is greater than the maximum torque, the output torque of the motor will become smaller and enter the stalled rotor condition. At this point, the current will be very high, and the motor will be incinerated as a result.
4. Stalled torque
After the Japan servo motor enters the stalled rotation condition, the speed is zero, and the torque that the motor can output is the stalled torque.
5. The connection of torque in different conditions
* The large torque is greater than the extra torque, but the stalled torque of the asynchronous motor may be greater than the * large torque or less than the additional torque, the former is caused by the difference in the motor parameters of the stalled rotor condition and the * large torque condition, and the latter is determined according to the design of practical working conditions.
|
More on that
|
How Mitsubishi PLC works
A. A scanning cycle is divided into input sampling, program fulfillment, and output rewriting.
B. Each scanning process. The convergence samples the input signal. The convergence rewrites the output signal.
C. Component image register ...
|
|
Mitsubishi Electric appeared at the 2021 China Smart Expo
From August 23 to 25, 2021, the 2021 China International Intelligent Industry Expo (hereinafter referred to as the Smart Expo) was held in Chongqing International Expo Center. Mitsubishi Electric (China) ...
|
|
Low-voltage electrical faults and maintenance methods - Mitsubishi
In the process of operation, low-voltage electrical appliances will present problems due to improper use or long-term operation of aging components, and there are many kinds of problems, and the common problems are analyzed and dealt with.
1. Contact problems and repairs
The contact is the primary component of the low-voltage switching coupon, ...
|
|
PLC Programming Recommendations – Mitsubishi PLC
1. When the PLC and the host computer (or touch screen) form a monitoring system, there are many hours on the screen that require "manual", "active" and other control forms (generally more than one). In the program, you can use the "MOV" command. For example, when selecting "manual", the constant 1 MOV will be changed to a ...
|
|
Mitsubishi PLC control servo motor method
1. The transistor output type of the FX series generally sends pulses to the servo through the output point of Y0, Y1 or the positioning module, and the speed and direction of the servo depend on the frequency and direction of the pulse in your program.
Mitsubishi FX3U series ...
|
|
Mitsubishi Electric begins research and development of a Mars satellite probe probe
TOKYO, February 21, 2020 – Mitsubishi Electric Corporation (TOKYO:6503) announced today that it has been appointed by the Japan Aeronautics and Astronautics Agency (JAXA) as the contractor for the Mars Lunar Probe (MMX) space probe. Mitsubishi Electric has launched development activities for the project that will utilize MMX's system ...
|
|
Performance comparison of Mitsubishi servo motors
First, the control accuracy is different
The step angle of the two-phase hybrid Mitsubishi servo motor is generally 1.8 ° and 0.9 °, and the step angle of the five-phase hybrid Mitsubishi servo motor is generally 0.72 ° and 0.36 °. Mitsubishi servo motors, which are also some functions, have a smaller step angle after segmentation.
...
|
|
Precautions for the use of Mitsubishi servo motor with brake
1. Occasions with brake servo motors:
The servo motor is mainly loaded by the motor shaft, assuming that the load driven by the motor shaft is vertical, after the whole control system is powered off, the load on the servo motor shaft will be driven to run down under the action of gravity, so that ...
|
|
Maintenance method of Mitsubishi inverter
Electrical characteristics view
Mitsubishi inverters that have been running and placed for a long time, due to the influence of the environment and the aging of inverter equipment, it is necessary to check and maintain the electrical performance of Mitsubishi inverters regularly. A comprehensive review of the input, rectifier and inverter, DC input fuses found ...
|
|
Advantages of Mitsubishi servo system:
The servo system is an automatic control system that makes the output of the object's position, direction, and condition change according to the arbitrary change of the input quantity (or given value). In the automatic control system, the system that can echo the control signal with a certain degree of accuracy is called the follow-up system, also known as the servo system.
|
|
Introduction to Mitsubishi PLCFX3U positioning control
1. The workbench runs in the direction of the decrease of the value of the current value register (generally M8342=OFF in the opposite direction), and when it encounters the near-point signal, it becomes a creeping speed, and the zero-point signal after leaving the near-point signal arrives with a delay of 1ms, and the pulse output is immediately aborted.
...
|
|
How to write a holding circuit for Mitsubishi PLC
There is a very common kind of circuit in Mitsubishi PLC - the persistence circuit. The insistence circuit means that when the external input switch is a button, it can be pressed once through the insistence circuit to insist on the output, similar to the self-locking in the electrical diagram. We use Mitsubishi PLC as an example to write a sticking circuit.
...
|
|
Mitsubishi servo motor method
1. Torque control: Torque control sets the output torque of the motor shaft through external imitation input or direct address assignment. For example, 10V is equivalent to 5Nm. When the external analog is set to 5V, the output of the motor shaft is 2.5 Nm. If the motor shaft load is less than 2.5 Nm, when the external load is 2.5 N...
|
|
The GOT widescreen family has been expanded with the GT2512
When industrial automation enters the era of artificial intelligence. Human-computer interaction has long surpassed the simple control of machines, and has been upgraded to obtain more information, use more functions and new skills for more accurate and efficient control, and complete the intelligent manufacturing promotion of industrial automation.
...
|
|
Mitsubishi PLC control system electroplating production line design
Planning PLC control system control requirements for electroplating production line:
1) SQ1-SQ4 is the driving advance and retreat limit switch, and SQ5-SQ6 is the upper and lower limit switches.
2) The workpiece is lifted to SQ5 to stop, and the car is driven to SQ1 to stop.
|
|
The matching relationship between the inverter and the motor - Mitsubishi
It has become an irreversible trend to drive the motor through the inverter, and in the actual application process, because the matching relationship between the inverter and the motor is not very reasonable, it often leads to some problems. When selecting an inverter, you should fully understand the load characteristics of the equipment driven by the inverter. Ms. Ginseng ...
|
|
Features of the MELSEC iQ-R series of programmable controllers
1. Routine control is consistent with safety control
In the MELSEC-QS series, it is necessary to prepare a system for conventional control and a system for safety control. With the MELSEC iQ-R series of safe programmable controllers, it is possible to combine conventional and safe control into a single system.
Quiet...
|
|
Mitsubishi Electric instruction format
(1) Arbitrary axis AC command (G140)
G140 Instruction Address = Axis Address Instruction Address = Axis Address ... ;
Command Address: Arbitrary Axis AC Command (G140) After that, specify the 1-character address set by the parameter (#12071-#12078) to be used for moving commands, etc.
|
|
Mitsubishi inverter FR-E024-0.75K repair
Type: FR-E024-0.75K
Fault: The boot cannot be started
Maintenance: This machine does not provide any symptom information, and the display screen shows an "E.THT" error when the motor is to be started after powering on. Check the instructions refer to the ...
|
|
The inverter completes the multi-speed function - Mitsubishi
The inverter can be preset with a number of different speed points, and then complete the scheduling of multiple speed stages. The specific completion method is as follows:
You can set a number of different speed points in the VFD, and you can generally set the maximum speed, minimum speed, and several center speed points.
According to the needs, choose ...
|
|
Contact
working hours
