SIEMENS PXC22.1-E.D Controller Module

Siemens PXC22.1-E.D Controller Module (Desigo PX HVAC Automation Station)

 

 

The Siemens PXC22.1-E.D is a Desigo PX compact automation station (building controller) used in HVAC and building management systems (BMS). It is not a PLC in the traditional S7 sense, but a freely programmable controller for building automation, mainly used for air handling units, chillers, pumps, and ventilation systems.

It integrates I/O, control logic, and BACnet/IP communication in one unit, and is designed for distributed control in intelligent buildings.

Key Specifications

• Model: PXC22.1-E.D
• Series: Siemens Desigo PX
• Product Type: Building Automation Controller / Automation Station
• I/O Capacity: 22 onboard points
  • 16 universal inputs (UI/O configurable)
  • 6 relay digital outputs
• Communication: BACnet/IP (Ethernet)
• Protocols: BACnet B-BC profile (building automation standard)
• Expansion: Supports TX-I/O and TX Open modules (up to ~400 points total)
• Power Supply: 24 V AC/DC (depending system design)
• Programming: D-MAP / function block logic via Desigo Xworks / ABT tools
• Mounting: DIN rail / cabinet installation
• Protection: IP20

Features & Advantages

• Dedicated controller for HVAC and building automation systems
• Native BACnet/IP communication for BMS integration
• Integrated 22-point I/O reduces need for extra modules
• Expandable architecture (TX-I/O modular expansion)
• Supports alarms, scheduling, trends, and remote monitoring
• Reliable long-term operation in building environments
• Designed for scalable systems (small to large buildings)

Applications

• HVAC systems (AHU, FCU, ventilation)
• Chiller plant control systems
• Building management systems (BMS / BAS)
• Hotels, hospitals, commercial buildings
• Airports and data center HVAC control
• Energy optimization systems
• Pump and valve control in building infrastructure