Siemens PXC200-E.D Building Automation Controller

1. Product Detailed Description

The PXC200-E.D acts as a central "brain" for building management systems. It is a modular controller that can handle up to 350 physical data points (with expansion modules) and up to 1,000 total data points (including virtual/open points).

Key characteristics include:

• Modular Construction: Optimized for DIN-rail mounting in control panels.

• Programmability: Uses the D-MAP programming language for custom HVAC logic.

• Scalability: Supports a wide range of TX-I/O modules for signaling, measuring, and switching.

• Integrated Management: Handles alarms, time schedules, and trend data directly on the device.

2. Product Parameters (Specifications)

3. Product Advantages

• Seamless Integration: BTL-tested BACnet communication ensures compatibility with third-party devices and higher-level management stations.

• High Flexibility: The modular design allows for a customized mix of digital and analog I/O modules (TX-I/O series).

• Robust Management: Built-in alarm routing, sophisticated scheduling, and trend functions reduce the load on the central server.

• Remote Access: Supports remote monitoring and operation via standard web browsers (when used with PXA40 option modules).

• Energy Efficiency: Optimized for complex HVAC plant control, helping to significantly reduce building energy consumption.

4. Cautions & Precautions

• Voltage Stability: Ensure a stable 24V AC power supply; the module includes low-voltage protection, but extreme fluctuations can interrupt operation.

• Battery Maintenance: The internal battery has a 4-year lifespan. It should be checked periodically to prevent loss of historical data during power outages.

• Installation Environment: With an IP20 rating, this device is not waterproof. It must be installed in a dry, dust-free control cabinet.

• Firmware Version: Ensure the hardware is compatible with your Desigo software version (e.g., Desigo V6.0 or later for specific BACnet profiles).

5. Product Applications

The PXC200-E.D is typically deployed in medium-to-large commercial and industrial buildings:

• Central Plant Control: Managing large boiler rooms, chiller plants, and cooling towers.

• Air Handling Units (AHU): Controlling complex multi-zone ventilation systems.

• District Heating: Monitoring energy transfer stations and large-scale pumps.

• Integrated Building Control: Acting as a gateway for Modbus, M-Bus, or LonWorks devices to a BACnet/IP backbone.

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