Siemens PXC100-PE96.A PXC Modular Programmable Controller

The Siemens PXC100-PE96.A is a PXC Modular programmable controller designed for the APOGEE building automation system. This modular controller is engineered for flexible building automation applications, providing robust processing capabilities for HVAC, lighting, and energy management systems. With memory options up to 768 KB RAM and 2 MB Flash, it offers reliable performance for controlling up to 96 nodes. The controller features two Ethernet/IP communication ports and one RS-485 P2 (FLN) port, ensuring versatile connectivity for diverse network architectures. It supports the self‑forming TX‑I/O island bus for expansion and requires 24 V AC power. The PXC100-PE96.A is an ideal solution for medium to large building automation projects.

Technical Specifications

Part number: PXC100-PE96.A. Brand: Siemens. Category: Building Automation Controller. Series: PXC Modular Series. System: APOGEE. Memory: up to 768 KB RAM, 2 MB Flash. Communication ports: 2 × Ethernet/IP (10/100 Mbps), 1 × RS-485 P2 (FLN). I/O points: supports up to 96 total via expansion modules (analog, digital, communication). Power supply: 24 V AC (or 24 V DC depending on configuration). Power consumption: 25 W typical. Operating temperature: 0°C to 50°C (32°F to 122°F). Storage temperature: -25°C to 85°C (-13°F to 185°F). Humidity: 5% to 95% non‑condensing. Vibration: 5 to 2000 Hz, 0.025 mm peak-to-peak. Shock: 30 g peak, 11 ms duration. Dimensions: 118 mm (H) × 88 mm (W) × 63 mm (D). Certifications: UL, CE, C‑Tick. The controller is designed for installation in indoor environments with IP20 protection.

Key Features

• Modular programmable controller for APOGEE building automation systems

• Controls up to 96 nodes via expansion modules

• 768 KB RAM and 2 MB Flash memory for robust processing

• 2 Ethernet/IP communication ports and 1 RS-485 P2 (FLN) port

• Supports self-forming TX-I/O island bus

• 24 V AC power supply (25 W typical consumption)

• Suitable for HVAC, lighting, and energy management applications

• Adaptive control, energy management programs, alarm management, and historical data collection

• Supports TCP/IP network communication

• Flexible expansion with TX‑I/O modules

Building Automation Capabilities

The PXC100-PE96.A is equipped with a sophisticated control engine that optimizes building management systems for HVAC, lighting, and energy efficiency applications. It supports adaptive control strategies that automatically adjust to changing conditions, reducing energy consumption while maintaining occupant comfort. The controller includes energy management programs for scheduling and demand limiting. Alarm management functions monitor system performance and generate notifications for abnormal conditions. Historical data collection supports trending, reporting, and analysis for continuous improvement. The controller can be integrated into a BACnet network (depending on configuration) for interoperability with other building automation systems.

Communication and Networking

Two Ethernet/IP ports provide high‑speed communication for programming, monitoring, and integration into plant‑wide networks. The RS-485 P2 (FLN) port connects to FLN devices such as room controllers and zone sensors. The self‑forming TX‑I/O island bus allows the controller to expand I/O capacity using TX‑I/O modules without complex configuration. The controller supports TCP/IP network communication and can be accessed via a web browser for remote diagnostics and monitoring. An optional PXX-485.3 device is required as the connection to FLN devices. The controller can also be configured via hyperterminal (using standard command-line interface) for advanced users.

Applications

The PXC100-PE96.A is used in building automation applications such as HVAC system control (air handling units, fan coils, VAV boxes), lighting control systems, energy management and demand response, chiller plant optimization, and central plant monitoring. Typical installations include commercial office buildings, hospitals, universities, hotels, and industrial facilities. The controller is part of the APOGEE system, which provides a comprehensive building management solution.

Installation and Expansion

Mount the PXC100-PE96.A on a DIN rail or backplate inside a control panel. Connect the 24 V AC power supply to the power terminals. Connect Ethernet/IP cables to the network ports for communication with the building network. Connect the RS-485 P2 (FLN) bus to FLN devices using shielded twisted‑pair cable. Install TX‑I/O modules as needed to expand I/O capacity, up to a total of 96 nodes. The controller automatically discovers TX‑I/O modules on the island bus. Configure the controller using the APOGEE Insight software or directly via a terminal connection. The controller’s IP address can be set via DIP switches or software configuration.

Maintenance and Diagnostics

The controller includes diagnostic LEDs for power, communication, and status. The built‑in web server allows remote diagnostics and monitoring. The controller stores historical data for analysis and reporting. No routine maintenance is required beyond periodic cleaning of the enclosure. Firmware updates can be performed via the Ethernet port using appropriate update tools. The controller stores configuration parameters in non‑volatile memory; backup copies can be stored on a PC.

Conclusion

The Siemens PXC100-PE96.A PXC Modular controller provides a flexible, scalable solution for building automation within the APOGEE system. Its support for up to 96 nodes, multiple communication protocols, and powerful processing capabilities make it suitable for medium to large building management projects requiring HVAC, lighting, and energy control.