The Pb PN-45734 (submodel PN-73899, order number 4002226733) is a high‑performance industrial automation module designed for demanding manufacturing and process automation environments. It provides a combination of digital inputs and outputs with multiple fieldbus options in a compact, environmentally protected housing. The module is suitable for use as a remote I/O station, machine‑mounted I/O, or as a distributed control node.
Product Type: Industrial automation module
Model: PN-45734 / PN-73899
Order Number: 4002226733
Supply Voltage: 24 V DC
Digital Inputs: 16 channels (sink/source, 24 V DC)
Digital Outputs: 8 channels (relay or transistor, configurable)
Communication Protocols: Modbus TCP/IP (Ethernet), PROFIBUS DP
Environmental Protection: IP67 (dust‑tight, water‑immersible)
Operating Temperature: -20°C to +60°C
Mounting: DIN rail or direct panel mounting
Dimensions: 100 × 90 × 60 mm
Weight: 0.5 kg

The module offers 16 digital input channels for connecting a wide range of sensors, limit switches, and pushbuttons. The 8 digital output channels can be configured as relay outputs for switching AC/DC loads or as transistor outputs for faster switching of DC loads. This makes the module suitable for mixed control tasks that require both status acquisition and actuator control.
The PN-45734 supports two of the most widely used industrial communication protocols: PROFIBUS DP for real‑time, deterministic control networks, and Modbus TCP/IP for Ethernet‑based integration with modern control systems. The dual‑protocol capability allows the module to be used as a gateway between legacy PROFIBUS installations and new Ethernet‑based SCADA systems.
With an IP67 rating, the module is dust‑tight and can withstand temporary immersion in water. This allows it to be mounted directly on machinery, in outdoor cabinets, or in wash‑down areas of food processing plants without the need for a separate IP‑rated enclosure. The wide -20°C to +60°C operating temperature range ensures reliable operation in unheated industrial environments.
Typical applications include machine‑mounted I/O for packaging lines, conveyor systems, and assembly stations, as well as remote I/O for process control in harsh environments.



