Limit Switch DF1 - Reliable Stroke Limit Device for Mobile Machinery | China Suppliers & Factory
Advantage
All products of the company can be customized for production according to user usage scenarios.
Product overview
The DF1 series limit switch is suitable for use as the stroke limit and terminal protection of the translation mechanism of mobile machinery in control lines with AC 50HZ, rated operating voltage up to 380V, and DC rated operating voltage up to 220V. It complies with the GB/T14048.5-2017 standard.
Classification and model meaning
Limit switches are divided into the following types according to different usage methods:
rod-shaped operating arm automatic reset type, referred to as rod type;
The fork-shaped operating arm is a non-automatic return type, referred to as the "also type".
Normal working conditions
a) The maximum allowable temperature does not exceed 130°C;
b) The minimum allowable temperature is not limited to -5℃;
Altitude: The altitude of the installation site does not exceed 2000m.
Pollution level: The pollution level of the limit switch is level 3.
Installation category: The installation category of the limit switch is blood type.
Installation conditions: The limit switch should be installed in accordance with the installation requirements in the instruction manual provided by the manufacturer.
Construction Introduction
The limit switch housing is made of die-cast aluminum, and the surface is sprayed with aluminum powder alkyd heat-resistant paint. The contact of the limit switch is disconnected by the operating arm driving the shaft to make the cam on the shaft move. The cam and the adjustment sleeve on the shaft are evenly equipped with 24 teeth on the circumference of φ26. The cam angle can be adjusted as needed to achieve the required closing procedure. When adjusting, just remove the screws on the end cover and the adjustment sleeve. The rocker arm can also be adjusted arbitrarily within 360 degrees (every 15 degrees), see Figure 1.
Protection Level: The protection level of the limit switch is IP44.
Use and installation
The deviation switch mounted on the bracket, and then welded to the tape rack. Edger A plane perpendicular to the axis of the tape, and the tape vertical roll edge distance of L = 50 100mm; Tape is located 1/3 lower end of the vertical roll; every deviation 50M tape can be mounted to open a pair.
Main Parameter
Basic parameters
The basic parameters of the limit switch are shown in Table 1
The basic parameters of the limit switch are shown in Table 1
| Rated control capacity | Rated operating voltage | Rated operating current | Conventional thermal current | Rated operating frequency (Times/hour) | Rated insulation voltage | |
|---|---|---|---|---|---|---|
| 630VA | AC | 380 | 1.7 | 10 | 30 | 500 |
| 220 | 3 | |||||
| 60W | DC | 220 | 0.27 | |||
| 110 | 0.54 | |||||
Making and breaking
The connection and disconnection capacity of the limit switch is shown in Table 2
The connection and disconnection capacity of the limit switch is shown in Table 2
| Use Category | Rated operating current | On/Breaking condition | |||
|---|---|---|---|---|---|
| AC-11 | 1.7 | I(A) | U(V) | COS φ | |
| 18.7 | 418 | 0.7 | |||
| DC-11 | 0.27 | I(A) | U(V) | T0.95 | |
| 0.44 | 242 | 300mS | |||
Frequently Asked Questions (FAQ)
Q1
What is the primary application of the DF1 series limit switch?
It is designed for stroke limit and terminal protection of the translation mechanism of mobile machinery in control lines.
Q2
What electrical standards and ratings does this limit switch comply with?
It complies with the GB/T14048.5-2017 standard, supporting AC 50HZ up to 380V and DC up to 220V.
Q3
What are the differences between the rod-shaped and fork-shaped operating arms?
The rod-shaped operating arm features an automatic reset type, while the fork-shaped operating arm is a non-automatic return type (referred to as the "also type").
Q4
What is the housing material and ingress protection (IP) rating?
The housing is made of die-cast aluminum coated with aluminum powder alkyd heat-resistant paint, providing an IP44 protection level.
Q5
Can the rocker arm and cam angle be adjusted?
Yes, the cam angle can be adjusted by removing the screws on the end cover and adjustment sleeve. The rocker arm is adjustable within 360 degrees (in 15-degree steps).
Q6
What are the temperature and altitude limits for installation?
The maximum allowable temperature is 130°C, the minimum is -5℃, and the installation altitude must not exceed 2000 meters.