Crane Limit Switch LX33 - Reliable China Suppliers & Factory for AC/DC Control Lines
Advantage
All products of the company can be customized for production according to user usage scenarios.
Type Meaning
The limit switch is divided into the following forms according to different usage methods:
- LX33-1 rod-shaped operating arm automatic reset type, referred to as rod type;
- LX33-2 fork-shaped operating arm non-automatic reset type, referred to as fork type;
- LX33-3 heavy hammer type;
- LX33-4 rotary;
Working conditions
- The upper limit of ambient air temperature is 40℃;
- The lower limit of ambient air temperature is not lower than -5℃;
- The 24-hour average ambient air temperature does not exceed 35 ℃.
- Altitude: The altitude of the installation site does not exceed 2000m.
- Mixing degree: The relative humidity of the air does not exceed 50% when the optimal temperature is 40°C. It can have higher relative humidity at lower temperatures. The monthly average minimum temperature of the wettest month does not exceed 25°C. The monthly average temperature of the wettest month does not exceed 25°C. The average maximum relative humidity does not exceed 90%. Condensation that occurs on products due to temperature changes requires action.
Construction Introduction
The travel switch is mainly composed of a contact group, a camshaft, a shell, etc. The contact breaking is realized by the rotation of the camshaft driven by a motor mechanism. The contact group structures are all rotary double breakpoints, rod type, fork type, and heavy bell type. The limit switch can be equipped with one or two sets of contact groups to form a single circuit (one normally closed) or a double circuit (one normally open, one normally closed) opening and closing form. In actual application, the user can adjust the cam angle as needed. You can change the contact opening and closing mode. The rotary limit switch can be installed with four contact groups at the same time, so that it can have secondary protection when it rises or falls. In practical applications of the rotary limit switch, if you need to control the lift of the lifting mechanism, you only need to pull out the positioning pin, turn the nut, and adjust the screw nut mechanism to change the lift of the lifting mechanism.
Pollution level: The pollution level is level 3.
Installation category: The installation category is Category II.
Main technical parameters
- Rated working voltage: 380V, DC 220V
- The contact making and breaking capabilities are shown in Table 1
- Agreed heating current: 10A
- Rated operating frequency: 300 times/hour
- Mechanical life: Not less than 1 million times
- Rated insulation voltage: Ui=400V
- Agreed heating current Ith: 10A
- Usage category: AC-15 DC-13
- Rated working voltage Ue/rated working current Ie under usage type AC-15 Ue/Ie: AC380V/2.6A DC-13 Ue/le=DC220V/0.4A
- Shell protection grade: IP44
- The fuse model RT16-10A equipped during the rated limited short-circuit current test
A contact group (2) is installed in the travel switch housing, and the moving contact and the stationary contact thereof drive the cam on the switch shaft (4) to open and close the contacts as the operating arm (3) rotates. The positioning of the operating arm is achieved by means of a positioning member (5), a positioning spring (6), a positioning lever (7) and a roller (8).
Use and maintenance
Use and maintenance
See Figure 5 and Figure 6 for appearance and installation dimensions.
Frequently Asked Questions
Q
Can the limit switches be customized for specific applications?
Yes, all products of the company can be customized for production according to the user's specific usage scenarios.
Q
What are the different types of LX33 limit switches?
The LX33 limit switch is divided into four forms: the LX33-1 rod-shaped operating arm automatic reset type (rod type), the LX33-2 fork-shaped operating arm non-automatic reset type (fork type), the LX33-3 heavy hammer type, and the LX33-4 rotary type.
Q
What are the temperature and altitude limits for operating these switches?
The ambient air temperature must be between -5℃ and 40℃, with a 24-hour average not exceeding 35℃. The installation site altitude should not exceed 2000 meters.
Q
What is the mechanical life and operating frequency of the travel switch?
The switch is designed for high durability, featuring a mechanical life of not less than 1 million operations and a rated operating frequency of up to 300 times per hour.
Q
What is the protection rating and installation category of the switch?
The switch features a shell protection grade of IP44, a pollution level of level 3, and belongs to Installation Category II.