| Attribute | Value |
|---|---|
| Brand | H.M. Stein Sohn GmbH |
| Model | A059.1 |
| Type | A059 |
| Input Current | 4…20mA (0…100x) |
| Limit Setting | -25…+125x (0…24mA) |
| Hysteresis | ±0.5x |
| Contact Load | 30W / 60V DC / 1A DC |
| Power Supply | 18…32V DC |
| Country of Origin | Germany |
| Weight | 120 gm |
What Is the Stein Sohn A059.1 Limit Switch?
The Stein Sohn A059.1 is a limit switch used to detect position, movement, or mechanical limits in applications where reliability and precision are essential. One of its most notable features is the 4-20mA current output, which is commonly utilized in analog signal transmission for industrial automation and control systems.
The 4-20mA standard usage provides low signal loss during extended cable runs and compatibility with a majority of PLCs, SCADA systems, and controllers.
Key Features
The following are some of the prominent features that have contributed to the popularity of this limit switch:
4-20mA Output Signal: Offers continuous feedback on an analog current loop that is useful for monitoring in real-time.
Compact and Rugged: Designed to withstand industrial conditions, including marine environments.
Accurate Switching: Exact position sensing to activate alarms or drive operations automatically.
Corrosion-Resistant Housing: Suitable for exposure to moisture, salt, or chemicals in hostile environments.
Easy Integration: Suitable for use with most controllers and industrial automation systems.
Technical Specifications
Although individual installation configurations may differ, the typical specs of the A059.1 model are:
Model: A059.1
Output Type: 4-20mA analog signal
Voltage Range: Standard control voltage (usually 24V DC or 230V AC depending on type)
Contact Type: Position feedback limit contact
Housing: Marine-grade metal or corrosion-resistant composite material
Environmental Rating: Usually IP65 or higher (see product datasheet)
Mounting Style: Panel or equipment mount, with mechanical operation
Always check the datasheet or product label for precise technical information.
Applications
The Stein Sohn A059.1 limit switch is very versatile and can be used in numerous industries. Some of the most popular applications are listed below:
1. Marine Industry
Utilized in ship automation systems, engine room controls, and ballast monitoring, the switch can perform well in the harsh marine environment.
2. Industrial Automation
From assembly lines to robotic arms, its accuracy makes it ideal for position sensing, feedback loops, and limit detection.
3. Cranes and Lifting Equipment
The switch is able to sense load positions and shut off motors or alarm systems upon maximum or minimum reach.
4. Oil & Gas Installations
Its rugged design and analog output in hazardous locations, particularly offshore, guarantee dependable operation.
5. Water Treatment Plants
Employed for control of valves and feedback of positions in fluid management systems, particularly where corrosion protection is required.
Advantages of the 4-20mA Output
4-20mA current loop usage is one of the greatest benefits of this switch. Here’s why:
Noise Resistance: Less vulnerable to electrical noise than voltage signals.
Long-Distance Signal Transmission: Suitable for large facilities.
Live-Zero Monitoring: 4mA lower limit enables the detection of faults in the circuit (e.g., faulty wires or sensor malfunctions).
Universal Compatibility: Suitable for most industrial control systems.
