The RS232 Line Driver Set Industry from Wiesemann & Theis enables secure transmission of RS232 data over distances of up to 1200 meters. With 1 kV DC isolation voltage, integrated surge protection, and robust interface technology, it safeguards connected devices against potential shifts and electromagnetic interference—ideal for use in Industry 4.0, automation, and control systems.

By converting RS232 to RS422 and back, even long distances can be bridged reliably without interference. Transparent signal transmission without configuration effort makes integration into existing systems exceptionally easy.

Galvanic isolation and potential protection

During long-distance data transmission, even small potential differences (from 7 V) can lead to transmission errors. Differences exceeding 30 V can permanently damage interface components. The RS232 Line Driver Set provides 1 kV DC galvanic isolation between ports, offering reliable protection against these hazards.

The integrated surge protection prevents damage from voltage spikes that may occur due to:

• Lightning strikes on remote lines
• Switching operations of high-power consumers
• Inductive coupling

Interfaces and signal conversion

Each of the two supplied converters features:

• RS232 interface (9‑pin Sub‑D plug, PC pin assignment)
• RS422 interface (9‑pin Sub‑D plug) for long‑distance communication

RS422 transmission provides high immunity to interference and enables distances up to 1200 meters at baud rates up to 115,200. The automatic conversion between RS232 ↔ RS422 occurs without manual switching or configuration.

Transparent operation

The set operates fully transparently for connected devices. Baud rate, data bits, or parity settings do not need to be configured on the line driver—the transmission remains unchanged across the galvanically isolated connection.

Power supply and energy efficiency

External power is supplied via a galvanically isolated screw terminal (12–24 V AC/DC). This separation prevents equalizing currents through the power input and increases overall operational safety.

• Flexible use of existing industrial power supplies
• Energy‑efficient design for continuous operation
• Surge protection without affecting power performance

Note: A power supply unit is not included in delivery.

Standards compliance and high reliability

The set complies with international standards:

• EN 61000‑6‑2 – Immunity
• EN 55032:2015 + A1 Class B – Emissions
• EN 61000‑3‑2 / EN 61000‑3‑3 – Power line compatibility

CE and UL certifications confirm its global usability. Wiesemann & Theis offers a five‑year warranty on the set.

Typical applications

• Industrial automation: Connecting RS232 terminals and controllers across long distances.
• Data acquisition: Secure transmission from sensors in large-scale facilities.
• Logistics centers: Stable communication between remote workstations and servers.
• Building management: Integration of RS232 devices into distributed control systems.

Advantages of DIN rail mounting

The compact DIN‑rail housing allows:

• Space‑saving integration into control cabinets
• Tidy cable management
• Simple installation and maintenance

Industrial‑grade RS232 long‑distance protection

The RS232 Line Driver Set Industry provides secure, galvanically isolated data transmission over distances up to 1200 meters. With integrated surge protection, automatic RS232/RS422 signal conversion, and DIN‑rail mounting, it is the perfect solution for demanding industrial and automation applications.