Web-IO 4.0 Digital 4x Relay Out

Versatile Relay Control with the Web-IO 4.0 Digital 4x Relay Out from Wiesemann & Theis

In modern industry and building technology, precise control of switching processes is crucial for optimizing processes and ensuring operational safety. The Web-IO 4.0 Digital 4x Relay Out from Wiesemann & Theis is a network-capable device that controls four relay outputs via TCP/IP Ethernet, including three potential-free contacts (NO) and one potential-free changeover contact (CO).

With an intuitive web interface, comprehensive network services, and protocols like OPC UA, MQTT, and REST, it is ideally suited for Industry 4.0 and the Internet of Things (IoT). This article highlights the technical features, applications, and advantages of this versatile device, which is designed for remote monitoring, building automation, and home automation.

Precise Control of Switching Outputs

The Web-IO 4.0 Digital 4x Relay Out features four switching outputs, consisting of three potential-free contacts (NO) and one potential-free changeover contact (CO). The outputs support a switching voltage of up to 48 V (or 110 V or 230 V via coupling relays) and a switching current of up to 2 A at 24 V or 0.5 A at 48 V. These features allow for precise control of devices such as lighting, gates, barriers, or other electrical components in industrial and private applications. The combination of contacts and a changeover contact offers flexibility for various switching requirements, making the device ideal for process monitoring, machine data acquisition (MDA), and fault alarm collection.

Intuitive Operation and Network Connectivity

The operation of the Web-IO 4.0 Digital is extremely user-friendly thanks to its intuitive web interface, which can be switched between German and English. Users can control the switching outputs directly through the web interface and monitor their status in real-time. The interface is optimized for smartphones, enabling control even on the go. The support for HTTP and HTTPS ensures secure communication. Developers can access the current IO states via HTTP requests, AJAX, or JavaScript to integrate the device into other websites or applications. The Box-to-Box feature allows switching signals to be forwarded 1:1 over the network, facilitating location-independent control. These connectivity options make the device ideal for network control in connected environments.

Flexible Alarm and Notification Functions

The Web-IO 4.0 Digital offers comprehensive alarm and status notification capabilities. Up to 30 actions can be configured, which are automatically triggered when changes occur in the outputs. These include email notifications, SNMP alarms (SNMP Traps V1, V2, V3), switching of its own outputs, controlling the outputs of another Web-IO, or HTTP requests for controlling third-party devices. These features are particularly beneficial in critical applications such as remote monitoring or fault alarm collection, where quick reactions to events are required. The ability to send status notifications by email supports the documentation and analysis of switching operations, which is crucial for audits and quality management.

Seamless Integration into Industry 4.0 and IoT

The Web-IO 4.0 Digital is fully equipped for the demands of Industry 4.0 and the Internet of Things. It supports modern protocols such as OPC UA, REST, and MQTT, which enable easy integration into automation systems and IoT platforms. AMQP is also supported upon request. Additional interfaces such as SNMP V1, V2c, V3, Modbus TCP, OPC DA, Syslog, and Sensobase (database integration via ODBC) allow for integration with existing systems and databases. Developers can directly access IO states via TCP and UDP sockets (client and server) to develop custom solutions. The support for FTP enables the logging of switching signals, which enhances process traceability. These connectivity options make the device a future-proof solution for building automation, home automation, and industrial applications.

Data Storage and Time Management

The Web-IO 4.0 Digital features an integrated data logger that stores switching operations and status changes. The storage capacity ranges from at least 7 weeks to a maximum of 20 years, depending on the selected storage frequency (15 seconds to 1 hour). The data can be exported in various formats such as FTP, Excel files, or email attachments, making further processing easier. An internal, battery-buffered clock ensures precise time stamps, which are optimized by synchronization with a time server. These features ensure reliable documentation and analysis of switching operations, which is particularly beneficial in process monitoring and machine data acquisition.

Versatile Applications

The Web-IO 4.0 Digital 4x Relay Out is designed for a wide range of applications. In remote monitoring and fault alarm collection, it controls devices and reports status changes to prevent operational disruptions. In building automation, it controls devices such as lighting, gates, or barriers and enables location-independent switching operations. In home automation, it supports the automation of lighting or heating systems to improve comfort and energy efficiency. In industrial environments, the device is suitable for process monitoring and visualization, as well as machine data acquisition (MDA), to optimize production processes. Other applications include controlling barriers, access systems, or other electrical components, with the combination of contacts and a changeover contact offering maximum flexibility.

Flexible Power Supply and Compliance with Standards

The power supply of the Web-IO 4.0 Digital is provided either via Power-over-Ethernet (PoE) with phantom power via data pairs or via unused wire pairs, or through an external power supply (12-48 V DC) via a screw terminal connection. This flexibility allows use in environments with or without PoE infrastructure. The device complies with standards for office and industrial environments, offering high immunity to interference according to EN 61000-6-2 and low electromagnetic emissions according to EN 55032:2015 + A1 Class B, EN 61000-3-2, and EN 61000-3-3. These features ensure reliable and interference-free operation, even in demanding environments.

Please note: The power supply is NOT included in the delivery.

Durability and Reliability

The Web-IO 4.0 Digital is designed for continuous operation and comes with a five-year warranty. Its robust design and the option for DIN rail mounting make it ideal for use in industrial environments. The internal clock, buffered by a battery, ensures precise time measurement, which is optimized through synchronization with a time server. These features emphasize the durability and reliability of the device, even under demanding conditions.

An Essential Tool for Relay Control

The Web-IO 4.0 Digital 4x Relay Out from Wiesemann & Theis is a versatile solution for relay control in connected environments. With its four switching outputs (three contacts and one changeover contact) and comprehensive network capability, it offers a flexible solution for building automation, home automation, process monitoring, and machine data acquisition. The support for modern protocols such as OPC UA, MQTT, and REST, as well as the intuitive web interface, make it ideal for Industry 4.0 requirements. Whether for controlling lights, gates, or barriers, logging switching operations, or integrating into IoT systems – this device is an indispensable tool for professional users.