SIEMENS PXM20 HMI Panel

Description

SIEMENS PXM20 HMI Panel

Product Dimensions：

The Siemens PXM20 is a high-performance network operator unit designed for the Desigo PX building automation system. It serves as a human-machine interface (HMI) for monitoring and controlling HVAC and other building services at the automation level.

Below is the detailed documentation for the PXM20.

1. Product Description

The PXM20 allows for the unified operation of multiple plants within a building. It features a high-resolution graphical display and a tactile keyboard for intuitive navigation. It can be used as a local plant operator unit (connected directly to a controller) or as a network-wide device (connected via LonTalk/BACnet).

• Key Interface: Integrated LCD with backlight and 8 functional keys.

• Connectivity: Supports BACnet on LonTalk.

• Operating Concept: Focuses on a clear, text-based and graphical representation of plant data.

2. Technical Specifications

3. Product Advantages

• Full System Access: Provides access to all actual values, setpoints, plant states, and parameters.

• Comprehensive Alarm Management: Features an integrated alarm LED, acoustic signals, and an alarm summary with acknowledgment/reset functions.

• Trend Visualization: Supports “Online Trend” logging for up to 5 data points with graphical viewing directly on the unit.

• Flexible Installation: Its slim design and multiple mounting methods make it suitable for various control cabinet layouts.

• Multi-level Security: Supports password-protected access levels to prevent unauthorized changes to critical setpoints.

4. Product Applications

The PXM20 is typically used in the following scenarios:

• Local Plant Operation: Mounted on the control panel door for on-site maintenance of air handling units (AHUs), boiler plants, or chillers.

• Remote Network Operation: Functioning as a central terminal for all automation stations within a BACnet/LonTalk network.

• Scheduler Management: Adjusting 7-day schedules and exception programs (holidays) without needing a PC.

5. Important Considerations (Precautions)

• Voltage Supply: Ensure the unit is powered by SELV (Safety Extra-Low Voltage) or PELV (Protective Extra-Low Voltage) according to local electrical standards.

• Firmware Updates: When updating firmware, specific adapters (like the PXA-C4) may be required depending on the hardware revision.

• Network Addressing: For BACnet communication, unique device addresses must be assigned during the engineering phase to avoid network conflicts.

• Environmental Limits: Do not install in areas with high humidity (>85% RH) or where temperatures exceed the 0–50°C range, as this may degrade the LCD contrast.

.

Shipping Port: Xiamen, China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Please make an inquiry for more models：