Siemens PXC22-E.D Programmable Building Controller

Description

Siemens PXC22-E.D Programmable Building Controller

Product Dimensions：

The Siemens PXC22-E.D is a high-performance, modular BACnet-certified controller from the Desigo™ PX range. It is a fundamental component for building automation and control systems (BACS), specifically designed for managing primary plants like HVAC systems, lighting, and energy monitoring.

Product Detailed Description

The PXC22-E.D is an intelligent, freely programmable controller that operates on a BACnet/IP network. The “22” in the name typically indicates the number of on-board physical I/O points (inputs and outputs), while the “-E” signifies Ethernet connectivity (BACnet over IP). The “.D” indicates that the module features a local LCD display and an integrated operating keypad for manual overrides and status checks.

Technical Parameters

Product Advantages

• Freely Programmable: Offers maximum flexibility to implement complex control strategies for heating, ventilation, and cooling using the Desigo toolset.
• Integrated Display (.D): Allows maintenance staff to view real-time values and manually override outputs directly at the controller without needing a laptop.
• Seamless Integration: Fully compliant with BACnet standards, ensuring interoperability with third-party devices and higher-level management stations (BMS).
• Scalability: Can be expanded with additional TX-I/O modules to increase the number of points managed by a single controller.
• Reliability: Built-in battery backup for the real-time clock and database retention during power outages.

Important Considerations & Precautions

• Network Security: Since this is a BACnet/IP device, it should be placed on a secure, isolated building automation VLAN to prevent unauthorized access.
• Power Supply: Always use a dedicated 24 V AC transformer. Sharing power with high-interference devices (like large contactors) can cause communication instability.
• Installation Environment: Ensure the control cabinet is well-ventilated; while the device is rated for industrial use, excessive heat can reduce the lifespan of the internal capacitors.
• Firmware: Ensure the firmware version of the PXC22-E.D matches the version of the Desigo Insight or Desigo CC management station for full feature support.

Product Applications

The PXC22-E.D is typically used for the automated control of:

• Air Handling Units (AHUs): Managing fans, dampers, heating/cooling coils, and humidity sensors.
• Boiler & Chiller Plants: Sequencing multiple units for energy-efficient heating and cooling production.
• District Heating: Controlling heat exchangers and primary circuit valves in large-scale utility networks.
• Lighting & Blinds: Coordinating large-scale commercial lighting based on occupancy and daylight harvesting.

Shipping Port: Xiamen, China

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