WTZ-A700 lifting weight limiter: use, scene, technical parameters, etc.

1. Introduction and purpose：

The lifting capacity limiter is also known as: overload limiter, load limiter. However, it is different from the torque limiter. The working principles and scenarios of the two are different.The difference between a torque limiter and an overload limiter）。

The lifting capacity limiter is composed of sensors, operational amplifiers, control actuators and load indicators, etc., integrating display, control and alarm functions.

The WTZ series overload limiters have absorbed many advantages of the existing overload limiters on the market. By taking the force (weight sensor) of the crane's lifting structure and feeding it back to the main instrument for collection, comparison, reading and judgment, the current weight is displayed and corresponding working condition indications are given. When the rated weight is exceeded, the lifting circuit of the crane's hook is quickly cut off, preventing the crane from lifting heavy objects. So as to achieve the purpose of protecting the crane and the safety of the operators.

The WTZ overload limiter features excellent performance, high reliability, and a lightweight and convenient installation. It is widely used in bridge cranes, elevators, open and close cranes, gantry cranes, etc.

2. Suitable for the following scenarios：

As shown in the above figure, the application of the Weite WTZ overload limiter in quay cranes can also be used in bridge cranes, elevators, hoist cranes, gantry cranes, etc.

3. Relevant configurations:

The configuration varies in different scenarios. Taking the quay crane in the above picture as an example, its related configurations are as follows:

Weight sensor: A device that converts physical signals on a crane into digital or analog signals.

Anti-overwinding switch: Also known as the weight hammer limiter, it is a safety protection device for lifting machinery. It cuts off the lifting control circuit through the weight hammer linkage mechanism to prevent accidents caused by overwinding of the steel wire rope.

Wind speed sensor: It is used to measure instantaneous wind speed, convert the wind speed into a digital signal, and transmit it to the control instrument.

Display screen: When an external large screen can be connected to display the lifting load data, an external large screen can be optionally equipped. The commonly used external large screens include data tube display and LED dot matrix display, with sizes of 3 inches, 5 o 'clock and 8 o 'clock large screens.

4. Structure and performance characteristics：

Outstanding expansion performance: Integrated with a full-function system of lifting safety devices, compatible with dual-mode signal transmission channels of RS485/4~20mA, equipped with industrial-grade display expansion interfaces, supporting multi-terminal data synchronization and visual presentation.

Stable performance guarantee: After years of accumulation of engineering scenario data, it adopts a fault-tolerant and redundant architecture design concept. Through 72-hour continuous working condition simulation tests and three-level seismic protection certification, a three-level quality inspection and control system has been established to achieve an ultra-long service life design (theoretical lifespan ≥10 years).

Minimalist interaction innovation: Unique plug-and-play installation system, allowing users to complete the entire process independently (installation and debugging success rate 98.7%), equipped with an intelligent wizard parameter configuration interface, supporting one-click adaptive calibration after device migration. It has been verified through actual measurement that non-professionals can quickly complete the entire deployment process.

5. Core performance advantages：

The WTZ-A700 intelligent load management system, as the flagship product of Weite Technology, has achieved a breakthrough in obtaining the 2,500-ton type test certification, setting a new benchmark for load-bearing performance in the industry. Its innovative design of full-condition adaptability not only meets the basic operation requirements of single or double hooks, but also, for high-difficulty hoisting operations such as ship section closure and heavy component turning, it has independently created a dynamic load monitoring algorithm for multi-hook collaborative operation (supporting precise measurement and safety early warning in the synchronous operation state of 3-4 hooks), achieving intelligent management of complex mechanical scenarios.

This device integrates three core advantages:
Super load-bearing certification: Passed the 2,500-ton type test certification of the Special Equipment Inspection and Research Institute, covering all scenarios of ultra-heavy industrial equipment applications.

Full working condition adaptability: Single/double hook standard mode: Precise measurement for conventional hoisting.

Multi-hook collaborative mode: Exclusive solution for shipyard closure/turnaround operations.

Dynamic load tracking: Real-time monitoring of the load distribution status in multi-hook operations.

Intelligent monitoring system: Innovatively equipped with a flight data recorder (black box) and an expandable payload frequency analysis system, it has achieved a breakthrough in the parallel signal acquisition of 4 to 12 channels. It adopts military-grade data storage chips, supporting the storage of over 30,000 hours of continuous operation data. Combined with the visual load spectrum analysis function, it provides decision-making basis for the full life cycle management of special equipment.

6. Technical parameters：

Display screen: 7-inch industrial color touch screen
Systematic error: ≤5%(F.S)
Ambient temperature: -20℃ to +60°C
Environmental humidity: 90%RH(at 20℃) No condensation
Protection level: IP65
Working voltage: DC24V(18-75V)
Overall power consumption: <35W
Alarm volume: > 60db
Input signals: 2-12 channels
Control output: ≤10 channels (expandable to 24 channels)
Output mode: RS485/4-20mA (optional)
Installation method: Wall-mounted/embedded

7. Appearance dimensions:

Dimensions: Length 23.14cm* Width 18.08 cm* depth 3.9 cm

8. Conclusion

Weite has been serving in the field of lifting safety for over 20 years, always focusing on user needs and providing value to customers.