B&R 4PP035.0300-01 Power Panel PLC Module

The B&R 4PP035.0300-01 is a compact Power Panel from the B&R 4PP Series, designed to integrate a human-machine interface (HMI) with a programmable logic controller (PLC) into a single space-saving unit. This device serves as a complete control solution for industrial automation applications, offering both visualization and control capabilities within a panel-mounted enclosure that requires minimal cabinet space. The 4PP035.0300-01 combines a monochrome LCD display, tactile keypad controls, and a powerful integrated processor, making it suitable for machine builders and system integrators across a wide range of manufacturing industries.

Display and User Interface

The Power Panel features a 3.5-inch monochrome LCD with a resolution of 320 x 240 pixels (QVGA), providing clear visual feedback for operator interaction. The backlit display ensures readability in low-light industrial environments. The front panel includes 16 tactile keys, with 12 of those keys equipped with built-in LEDs for status indication. The keys use a European or Cyrillic character set depending on the configuration, and the display supports both numeric and alphanumeric output. The front surface is rated IP65, offering protection against dust ingress and low-pressure water jets, making the device suitable for operation in wash-down areas, dusty factory floors, and other demanding industrial conditions.

Processor and Memory Architecture

The 4PP035.0300-01 is equipped with a high-performance ARM-based processor capable of executing basic instructions with a typical cycle time of 0.8 microseconds. For user program storage, the unit provides 300 kilobytes of SRAM user RAM and 448 kilobytes of Flash PROM system memory. The device operates on the PPO1x operating system from B&R, which is specifically designed for deterministic real-time control applications. A lithium-ion battery with 3 V output and 950 mAh capacity powers the real-time clock and maintains retentive memory during power outages, ensuring that critical process data and timestamps are preserved across shutdowns. The RTC has a one-second resolution and non-volatile memory storage for long-term reliability.

Power Supply and Environmental Requirements

The Power Panel is powered by a 24 V DC supply, with a nominal input voltage range of 18 to 30 V DC. Maximum power consumption is 6 watts, making it an energy-efficient choice for control systems. The device includes built-in protection against overvoltage, undervoltage, and short circuits. Operating temperature range is 0°C to 50°C, while storage temperature ranges from -20°C to 60°C. The relative humidity tolerance is 5 percent to 95 percent non-condensing. The unit weighs 0.5 kilograms and its rear housing is rated IP20, requiring installation within a protective enclosure when the rear connections are exposed. Dimensions are 156 mm in width, 120 mm in height, and 46.1 mm in depth.

Communication Interfaces and Connectivity

For field-level communication, the 4PP035.0300-01 provides multiple interface options. An RS232 port with 9-pin DSUB connector supports serial communication with legacy devices. An isolated CAN bus interface allows connection to B&R's CAN-based I/O systems and third-party devices supporting CANopen, with a maximum bus length of 1000 meters. The unit also features an Ethernet port (10/100 Mbit/s) for networking, programming, and data exchange with higher-level systems. A USB host port is provided for external storage devices such as USB flash drives, allowing program backup, data logging, and firmware updates. The system includes 16 built-in digital inputs operating at 24 V DC, providing basic I/O capability without requiring additional expansion modules.

Software Compatibility and Programming

Configuration and programming of the 4PP035.0300-01 are performed using B&R Automation Studio, the integrated development environment for all B&R automation products. Automation Studio supports IEC 61131-3 programming languages including Ladder Diagram, Structured Text, Function Block Diagram, and Sequential Function Chart. The environment also provides HMI screen design tools that allow operators to create custom visualization pages, alarm displays, trend charts, and data entry screens. Programs and screen layouts are stored in the device's Flash PROM and can be downloaded via Ethernet, USB, or serial connection. The development environment includes simulation capabilities, allowing offline testing without the physical hardware.

Diagnostic and Maintenance Features

The front panel includes multiple LED indicators for power status, communication activity, and fault conditions. Real-time diagnostic information can be displayed on the LCD screen to assist operators in troubleshooting. The device stores an internal error log that can be retrieved via Automation Studio for detailed analysis. The battery-backed real-time clock supports time-stamped event logging, helping maintenance personnel correlate faults with machine operation history. The lithium battery is replaceable, and the unit provides a low-battery warning before the battery reaches end-of-life. Periodic inspection of the IP65 front seal and terminal connections is recommended during scheduled plant maintenance. The unit contains no user-serviceable components beyond the battery and external fuses; internal repairs require factory service.

Certifications and Compliance

The B&R 4PP035.0300-01 carries CE marking for European market access and UL recognition for North American installations. The device is RoHS compliant, indicating that it meets environmental standards for restricted hazardous substances. As a safety component, the Power Panel is not itself safety-rated but can be used in safety-related applications when combined with external safety relays or safety PLCs. For applications requiring functional safety, B&R offers dedicated Safety Power Panel variants with integrated safety logic.

Applications and Suitability

The 4PP035.0300-01 is ideally suited for compact machinery, packaging equipment, assembly stations, and material handling systems where panel space is limited but full HMI and control functionality is required. Its all-in-one design reduces wiring complexity, lowers installation costs, and simplifies spare parts management compared to separate PLC and HMI units. Typical industries include automotive component manufacturing, consumer goods packaging, pharmaceutical processing, and food and beverage production. For new designs requiring higher performance, B&R offers the Power Panel 400 and 500 series with color TFT displays and more powerful processors, but the 4PP035.0300-01 remains a reliable choice for legacy system maintenance and smaller-scale applications.