Siemens 6AV6446-4AA40-0BY3 MP 370

€ 2.495,00

SKU: 6AV6446-4AA40-0BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-4AA40-0BY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI Multi Panel series by Siemens. This unit features a 15-inch TFT display and is designed for high-performance human-machine interface applications in industrial automation environments. It operates as a standalone HMI panel capable of visualizing process data, managing alarms, and interfacing with a wide range of Siemens and third-party controllers.

The MP 370 (6AV6446-4AA40-0BY3) is equipped with a touch-sensitive screen and supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet, enabling flexible integration into existing automation architectures. The panel runs on Windows CE and supports the WinCC flexible runtime environment for project execution. It provides onboard flash memory for project storage and supports external memory cards for data logging and recipe management. The unit operates on a 24 V DC supply and is built to withstand the demands of industrial environments with an IP65 front protection rating.

The MP 370 is widely deployed in manufacturing, process automation, and machine tool industries where a large, high-resolution display and robust connectivity are required. Its compatibility with SIMATIC S7 PLCs and support for PROFIBUS DP makes it particularly suitable for integration into Siemens-based automation systems. The panel is commonly found on packaging machinery, press lines, conveyor systems, and process control stations where operators require detailed visualization and control capabilities.

Technical Specifications

Display Size	15 inch
Display Type	TFT color LCD
Display Colors	256 colors
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (10/100 Mbit/s)
Operating System	Windows CE
Runtime Software	WinCC flexible Runtime
IP/Protection Rating	IP65 (front), IP20 (rear)
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90%, non-condensing
Mounting	Panel mounting
Certifications	CE, UL, cULus
Series/Product Family	SIMATIC HMI Multi Panel (MP 370)

Common Error Codes & System Events

Event ID: 10000: Connection to the PLC could not be established or was interrupted during runtime.
Check communication cable connections, verify MPI/PROFIBUS address settings, and confirm PLC is powered and in RUN mode.
Event ID: 10001: Communication timeout between the HMI panel and the configured controller.
Verify network configuration, check baud rate settings, and ensure no address conflicts exist on the bus.
Event ID: 20000: Project download failed or project data is corrupted.
Re-download the WinCC flexible project from the engineering station and verify project compatibility with the panel firmware version.
Event ID: 40000: Internal flash memory is full or a memory access error has occurred.
Delete unused data logs, recipes, or archived files. Consider transferring data to an external memory card.
Event ID: 50000: System runtime error — WinCC flexible runtime has encountered an unrecoverable fault.
Restart the panel. If the fault persists, reload the project and update the panel firmware to the latest compatible version.
Event ID: 70000: Recipe data error — recipe record could not be read or written correctly.
Check recipe configuration in WinCC flexible, verify memory card integrity, and re-transfer recipe data to the panel.
Event ID: 110000: Alarm buffer overflow — the number of pending alarms has exceeded the buffer capacity.
Acknowledge and clear active alarms. Review alarm configuration to reduce unnecessary alarm triggers or increase buffer size in the project settings.

Frequently Asked Questions

What communication interfaces does the MP 370 (6AV6446-4AA40-0BY3) support?

The MP 370 supports MPI, PROFIBUS DP, and Ethernet (10/100 Mbit/s) interfaces, allowing connection to a wide range of Siemens SIMATIC PLCs and third-party controllers.

What software is required to program and configure this HMI panel?

The panel is configured using Siemens WinCC flexible engineering software. The project is then downloaded to the panel via Ethernet, MPI, or USB connection.

What is the supply voltage for the 6AV6446-4AA40-0BY3?

The panel requires a 24 V DC power supply. Ensure the supply is stable and within the specified tolerance range to prevent operational issues.

Is the MP 370 compatible with SIMATIC S7-300 and S7-400 PLCs?

Yes, the MP 370 is fully compatible with SIMATIC S7-300 and S7-400 PLCs via MPI or PROFIBUS DP, and also supports Ethernet-based communication with S7 controllers.

What is the front panel protection rating of this unit?

The front panel of the MP 370 carries an IP65 protection rating, making it suitable for installation in environments where dust and water spray may be present.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector. Check that the supply is within tolerance and that the power connector is fully seated.

Restore correct supply voltage if out of range. If voltage is correct and display remains blank, the internal power supply board or backlight inverter may require replacement.

Panel fails to communicate with the PLC

Verify the communication cable type and wiring. Check MPI or PROFIBUS address settings on both the panel and the PLC. Use a bus diagnostic tool to detect address conflicts.

Correct any address conflicts, replace damaged cables, and ensure baud rate settings match on all devices on the bus. Re-download the project if communication parameters were changed.

Touchscreen does not respond or responds inaccurately

Check for physical damage or contamination on the touch surface. Attempt a touchscreen recalibration via the panel's Control Panel settings in Windows CE.

Clean the touch surface with a soft, dry cloth. Perform touchscreen recalibration. If inaccuracy persists after calibration, the touchscreen overlay may need to be replaced.

Project fails to load or panel shows a blank runtime screen

Check the project file integrity by re-opening it in WinCC flexible. Verify that the project was compiled without errors and that the firmware version on the panel matches the project requirements.

Recompile and re-download the project to the panel. Update the panel firmware if a version mismatch is detected. Perform a panel reset if the runtime environment is corrupted.

Panel freezes or restarts unexpectedly during operation

Check the supply voltage for instability or voltage dips. Review the alarm and event logs in WinCC flexible for any recorded system faults prior to the freeze.

Stabilize the power supply and add filtering if electrical noise is suspected. Update the panel firmware to the latest version and reduce project complexity if CPU load is consistently high.

Condition	Repair, Used, Refurbished, New in box (sealed)