Siemens 6AV6446-3AA41-0AY3 SIMATIC MP 370

Name: Siemens 6AV6446-3AA41-0AY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-3AA41-0AY3
Price: 2495.00 EUR
Availability: InStock

€ 2.495,00

Condition

Clear

SKU: 6AV6446-3AA41-0AY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA41-0AY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization tasks. This unit features a 12-inch TFT display and is part of the MP 370 series, which provides high-performance operator interface functionality for industrial automation environments. It is manufactured by Siemens and represents a robust, panel-mounted HMI solution suitable for complex visualization requirements.

The MP 370 (6AV6446-3AA41-0AY3) is equipped with a 12" TFT color display with a resolution of 800 x 600 pixels (SVGA) and supports touch screen operation. It runs on WinCC flexible runtime software and offers communication interfaces including MPI, PROFIBUS DP, and Ethernet (TCP/IP), enabling integration with a wide range of Siemens SIMATIC PLCs including S7-300 and S7-400 series. The panel includes a 64 MB Flash memory for project storage and operates on a 24 V DC supply voltage, with an integrated processor providing sufficient performance for complex graphical projects and trend displays.

The SIMATIC MP 370 is widely deployed in machine building, automotive manufacturing, food and beverage processing, and chemical plant automation where a large, high-resolution display is required for detailed process visualization. Its multi-protocol communication capability makes it suitable for integration into existing SIMATIC automation architectures. The panel's robust industrial construction and wide operating temperature range make it appropriate for installation in control cabinets in factory floor environments.

Technical Specifications

Display Size	12 inch
Display Resolution	800 x 600 pixels (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touch screen
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 30 W
Communication Interface	MPI, PROFIBUS DP, Ethernet (TCP/IP), RS-422/485
Memory	64 MB Flash
Operating Temperature	0 °C to +50 °C
Storage Temperature	-20 °C to +60 °C
Relative Humidity	10% to 90% (non-condensing)
IP/Protection Rating	IP65 (front panel)
Mounting	Panel mounting
Series/Product Family	SIMATIC MP 370
Certifications	CE, UL, cULus

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 interrupted.
Check MPI/PROFIBUS or Ethernet cable connections and termination resistors. Verify PLC address settings match the HMI project configuration. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to PLC lost during runtime. The HMI panel has detected a timeout on the configured communication channel.
Inspect physical communication cables for damage. Verify network addresses and baud rate settings. Restart both the HMI panel and the PLC if the connection does not recover automatically.
Event ID: 20000: Project download error. The project file could not be transferred to the panel correctly.
Check the transfer cable or network connection used for downloading. Ensure the WinCC flexible project is compiled without errors before transfer. Verify sufficient Flash memory is available on the panel.
Event ID: 30000: Runtime system error. An internal software fault has occurred within the WinCC flexible runtime environment.
Restart the HMI panel. If the error persists, reload the project from WinCC flexible. Check for firmware compatibility between the project and the panel firmware version.
Event ID: 40000: Tag read/write error. A configured tag could not be read from or written to the connected controller.
Verify the tag address in the WinCC flexible project matches the actual PLC data block or memory address. Check PLC program to ensure the data area is accessible.
Event ID: 50000: System memory low. Available runtime memory on the HMI panel is critically low.
Reduce the number of active screens, trends, or alarms in the project. Optimize graphical objects and reduce image file sizes. Consider archiving historical data to an external storage device.
Event ID: 60000: Backup battery low or missing. The internal backup battery voltage has dropped below the required threshold.
Replace the internal backup battery with the correct Siemens-approved replacement. Ensure the panel is powered off before replacing the battery to avoid data loss.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC MP 370 (6AV6446-3AA41-0AY3)?

The MP 370 is compatible with Siemens SIMATIC S7-300, S7-400, and S7-200 PLCs via MPI or PROFIBUS DP interfaces. Ethernet-based communication with S7 controllers is also supported using the integrated Ethernet port.

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

The MP 370 is configured using Siemens WinCC flexible software. The project is created on a PC and then downloaded to the panel via MPI, PROFIBUS, or Ethernet connection.

What is the display size and resolution of the 6AV6446-3AA41-0AY3?

This unit features a 12-inch TFT color display with a resolution of 800 x 600 pixels (SVGA), providing a large and detailed visualization area suitable for complex process screens.

What is the supply voltage required for the MP 370?

The MP 370 requires a 24 V DC supply voltage. Ensure the power supply can deliver sufficient current, typically around 1.5 A or more depending on the load.

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

The front panel of the MP 370 is rated to IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for installation in industrial control cabinet doors.

Troubleshooting

Display remains blank after power on

Measure the 24 V DC supply voltage at the power connector on the rear of the panel. Check that the voltage is within the acceptable range. Inspect the internal fuse if accessible.

Restore the 24 V DC supply to within specification. If the supply voltage is correct but the display remains blank, the backlight or internal power supply module may have failed and the unit should be sent for repair or the backlight replaced.

Touch screen does not respond or responds inaccurately

Check whether the touch screen responds at all by observing any visual feedback on the display. Determine if the issue is a complete failure or a calibration drift causing inaccurate touch registration.

Perform a touch screen recalibration through the panel's Control Panel settings in the operating system. If the touch screen is completely unresponsive, inspect the touch controller ribbon cable connection internally or replace the touch screen overlay.

HMI cannot establish communication with the PLC

Verify the MPI or PROFIBUS address configured in the WinCC flexible project matches the address set on the PLC. Check the physical cable connections and ensure termination resistors are correctly placed at both ends of the bus.

Correct any address mismatches in the project configuration and re-download the project. Replace the communication cable if damaged. Ensure the PROFIBUS baud rate is consistent across all devices on the network.

Panel freezes or restarts unexpectedly during operation

Check the supply voltage for ripple or voltage drops under load. Review the system event log on the panel for any recorded fault events prior to the freeze. Assess whether the issue occurs on specific screens or actions.

Stabilize the 24 V DC power supply and ensure adequate current capacity. If the issue is software-related, reload the WinCC flexible project and update the panel firmware to the latest compatible version. If hardware faults are suspected, the unit should be inspected for component-level failures.

Project download fails or transfer is interrupted

Check the transfer cable integrity and the PC communication port settings. Ensure the panel is set to Transfer mode before initiating the download from WinCC flexible.

Switch the panel to Transfer mode via the Start Center or Control Panel. Use a known-good MPI or Ethernet cable. Verify the WinCC flexible project compiles without errors and that the panel has sufficient free Flash memory to accept the new project.

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