PXM20 SIEMENS Operator Unit

Description

PXM20 SIEMENS Operator Unit

Product Dimensions：

Product Description (Detailed Explanation)

The PXM20 serves as a specialized Human-Machine Interface (HMI) for the Siemens Desigo building management platform. It features a high-resolution backlit liquid crystal display (LCD) and an integrated push-dial (navigation knob) for intuitive menu navigation.

This unit allows facility managers and technicians to access real-time data from modular automation stations (such as PXC… series). Users can acknowledge alarms, adjust setpoints, override schedules, and view graphic-based trend logs without needing a full supervisory PC or software suite. It is designed for panel mounting or can be used as a handheld device for field commissioning.

Product Advantages (Key Benefits)

• Intuitive Operation: The combination of dedicated function keys and a rotary navigation knob allows for fast access to data points even while wearing industrial gloves.

• Full System Visibility: Provides access to all data points within the connected automation station, including inputs, outputs, parameters, and complex time schedules.

• Alarm Management: Features a dedicated alarm LED and internal buzzer to notify personnel immediately of system faults or limit violations.

• Multi-Language Support: Supports various languages for international use, ensuring that local operators can understand system messages clearly.

• Plug-and-Play Setup: Automatically recognizes the connected automation station and populates the menu structure based on the programmed logic, requiring minimal manual configuration.

Precautions (Important Notes)

• Connection Limitations: Ensure the cable length between the PXM20 and the automation station does not exceed the maximum specified distance (typically 3 meters for PPS2) to avoid signal loss.

• Firmware Compatibility: The PXM20 firmware must be compatible with the version of the Desigo PX automation station it is connected to. Incompatible versions may result in missing data or menu errors.

• Cleaning: Clean the display only with a soft, dry cloth. Avoid using harsh chemical solvents or abrasive cleaners that could damage the anti-glare coating of the LCD.

• Environmental Exposure: While rated IP40, the unit is intended for indoor use within a control cabinet. Do not install it in areas with direct steam, high humidity, or heavy vibration.

Product Applications (Typical Use Cases)

• HVAC Plant Control: Adjusting temperature setpoints and viewing air-handler unit (AHU) status in commercial office buildings.

• Boiler & Chiller Monitoring: Localized monitoring of primary plant equipment where a central workstation is not immediately accessible.

• Field Commissioning: Used by HVAC technicians to test I/O points and calibrate sensors during the initial startup of a building’s automation system.

• Schedule Overrides: Allowing facility staff to manually extend heating or cooling hours for special events directly from the mechanical room.

• Troubleshooting: Reviewing active alarm logs and historical trends to diagnose mechanical failures in pumps, fans, or valves.

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：