Siemens 6AV6446-3AA40-3AY3 MP 370

€ 2.495,00

SKU: 6AV6446-3AA40-3AY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA40-3AY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI Multi Panel series, designed for demanding visualization and operator control tasks in industrial automation environments. This panel features a 15-inch TFT display and runs on the Windows CE operating system, providing a robust platform for process visualization. It is part of Siemens' established SIMATIC HMI product line, offering reliable human-machine interface functionality for complex applications.

The MP 370 (6AV6446-3AA40-3AY3) is equipped with a touch-sensitive screen interface and supports multiple communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling flexible integration into existing automation networks. The panel includes onboard flash memory for project storage and supports external memory cards for additional capacity. It operates on a 24 V DC supply and is built to withstand industrial environments, with a front panel protection rating of IP65. The unit runs WinCC flexible runtime software for project execution.

The MP 370 is widely deployed in manufacturing, automotive, chemical processing, and energy industries where large-format visualization and reliable operator interaction are required. Its 15-inch display makes it suitable for complex process overviews, alarm management, and recipe handling on machine control panels and control cabinets. The panel's compatibility with SIMATIC S7 PLCs and support for PROFIBUS DP makes it a natural fit for Siemens-based automation architectures.

Technical Specifications

Display Size	15 inch
Display Type	TFT color LCD
Display Colors	64,000 colors
Touch Technology	Resistive touchscreen
Input Voltage	24 V DC
Power Consumption	Approx. 50 W
Operating System	Windows CE
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
IP Protection Rating (Front)	IP65
IP Protection Rating (Rear)	IP20
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, cUL
Series	SIMATIC HMI Multi Panel (MP 370)

Common Error Codes & System Events

Event ID: 10000: Communication error between HMI panel and PLC. The configured connection to the controller cannot be established or has been lost.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Restart both PLC and HMI panel.
Event ID: 10001: Connection timeout to the configured PLC. The HMI panel did not receive a response from the controller within the expected time.
Verify network cabling and bus termination. Check that the PLC is in RUN mode. Confirm baud rate and station address settings in the HMI project match the PLC configuration.
Event ID: 20000: Tag read error. The HMI panel was unable to read a configured tag from the PLC.
Verify that the tag address exists in the PLC program and that the data block or memory area is accessible. Check for address conflicts in the HMI project.
Event ID: 20001: Tag write error. The HMI panel was unable to write a value to a configured PLC tag.
Confirm the PLC memory area is not write-protected. Check that the tag address and data type in the HMI project match the PLC program definition.
Event ID: 40000: Project loading error. The runtime project could not be loaded from flash memory or memory card.
Check that the project file is not corrupted. Re-transfer the project from the engineering station using WinCC flexible. Verify available storage memory on the panel.
Event ID: 50000: System memory low. Available RAM on the HMI panel is critically low, which may cause instability or reduced performance.
Reduce the number of active screens or objects in the project. Close unnecessary background applications. Consider optimizing the project structure in WinCC flexible.
Event ID: 70000: Printer communication error. The HMI panel cannot communicate with the configured printer.
Check printer cable connections and printer power status. Verify printer driver settings in the HMI project. Restart the panel and printer.

Frequently Asked Questions

What software is used to program and configure the MP 370?

The MP 370 is configured using Siemens WinCC flexible engineering software. Projects are created on a PC and transferred to the panel via Ethernet, MPI, or USB/memory card.

Which PLCs are compatible with the Siemens MP 370?

The MP 370 is compatible with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP, and also supports Ethernet-based communication with S7 controllers. It can also communicate with third-party controllers via serial interfaces.

What is the supply voltage for the 6AV6446-3AA40-3AY3?

The panel requires a 24 V DC power supply. Ensure the supply is within the permitted tolerance range as specified in the device manual.

Does the MP 370 support recipe management and alarm logging?

Yes, the MP 370 supports recipe management, alarm logging, and trend displays as part of its WinCC flexible runtime functionality. Data can be stored on internal flash memory or an external memory card.

What is the front panel protection rating of the MP 370?

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

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check for correct polarity. Inspect the internal fuse if accessible.

Ensure the 24 V DC supply is within tolerance and correctly wired. If the supply is correct but the display remains blank, the internal power supply board or backlight inverter may be faulty and require replacement.

Touchscreen does not respond or responds inaccurately

Attempt to recalibrate the touchscreen via the panel's Start Center or Control Panel in Windows CE. Check for physical damage or contamination on the screen surface.

Perform a touchscreen recalibration through the Windows CE Control Panel. Clean the screen surface with a soft cloth. If calibration does not resolve the issue, the touchscreen overlay may need to be replaced.

HMI panel cannot establish communication with the PLC

Verify the MPI or PROFIBUS cable connections and bus termination at both ends. Check that the station address and baud rate configured in the HMI project match the PLC settings.

Correct any address or baud rate mismatches in the WinCC flexible project and re-transfer to the panel. Replace the communication cable if damaged. Ensure bus termination resistors are correctly installed at both ends of the network.

Project transfer from PC to panel fails

Check the transfer cable or Ethernet connection between the engineering PC and the panel. Verify that the panel is in Transfer mode via the Start Center.

Switch the panel to Transfer mode manually through the Start Center. Confirm the correct communication interface and IP address or MPI address are configured in WinCC flexible. Try a different cable or interface if the issue persists.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage drops or instability under load. Review the project for memory-intensive screens or excessive tag polling rates.

Stabilize the power supply and ensure it is adequately rated for the panel's power consumption. Optimize the WinCC flexible project by reducing tag update cycles and simplifying complex screens. If the problem persists, the panel hardware may require inspection or repair.

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