Siemens 6AV6446-3AA41-2AY3 SIMATIC MP 370

Name: Siemens 6AV6446-3AA41-2AY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-3AA41-2AY3
Price: 1995.00 EUR
Availability: InStock

€ 1.995,00

Condition

Clear

SKU: 6AV6446-3AA41-2AY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-3AA41-2AY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level visualization and operator control tasks. This unit features a 12-inch TFT color display and is part of the MP 370 series, which provides a high-performance platform for complex HMI applications. It is manufactured by Siemens and integrates seamlessly within the SIMATIC automation environment.

The MP 370 panel is equipped with a resistive touchscreen and function keys, offering flexible operator interaction. It supports multiple communication interfaces including PROFIBUS DP and MPI, enabling direct connection to SIMATIC S7 PLCs and other compatible controllers. The panel runs WinCC flexible runtime software, providing a powerful scripting environment, recipe management, alarm logging, and trend display capabilities. With onboard flash memory and support for external storage via CompactFlash, the unit can handle extensive project data and historical logging.

The SIMATIC MP 370 is widely deployed in manufacturing, automotive, food and beverage, and process industries where robust and feature-rich operator panels are required at the machine level. Its combination of a large display, flexible communication options, and comprehensive visualization software makes it suitable for complex machinery with high data visualization demands. The panel is designed for panel mounting in control cabinet doors and operator stations in industrial environments.

Technical Specifications

Display Size	12 inch
Display Type	TFT color LCD
Display Resolution	800 x 600 px (SVGA)
Display Colors	256 colors
Touch Technology	Resistive touchscreen
Input/Operating Voltage	24 V DC
Power Consumption	Max. 30 W
Communication Interface	PROFIBUS DP, MPI, RS-422/RS-485
Operating System	Windows CE
Runtime Software	WinCC flexible Runtime
Memory	12 MB flash (internal project memory)
External Storage	CompactFlash slot
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), IP20 (rear)
Mounting	Panel mounting
Certifications	CE, UL, cUL

Common Error Codes & System Events

Event ID: 10000: Configuration error detected during startup; project data may be corrupted or incompatible with the runtime version.
Reload the project using WinCC flexible engineering software and ensure the runtime version matches the project version.
Event ID: 20000: Communication connection to the PLC has been lost or cannot be established.
Check PROFIBUS/MPI cable connections, verify bus address settings, and confirm PLC is powered and communicating correctly.
Event ID: 40000: Tag read/write error; the panel cannot access a configured PLC variable.
Verify the tag address in the WinCC flexible project, confirm the PLC program contains the referenced data block or variable, and check communication status.
Event ID: 50000: Recipe data error; recipe records cannot be read from or written to storage.
Check available storage space on CompactFlash card, verify recipe configuration in the project, and replace CompactFlash card if corrupted.
Event ID: 70000: Alarm logging error; historical alarm data cannot be written to the configured storage location.
Verify the logging target path and available storage capacity. Reformat or replace the CompactFlash card if necessary.
Event ID: 80000: System memory low warning; available runtime memory is insufficient for current project demands.
Reduce the number of active screens, limit open trend buffers, or optimize the project to reduce memory footprint.
Event ID: 110000: Screen object error; one or more configured display objects cannot be rendered due to missing resources or configuration faults.
Review the project in WinCC flexible for missing images or fonts, recompile and reload the project to the panel.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC MP 370?

The MP 370 supports direct connection to Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. It can also communicate with S5 PLCs and third-party controllers via serial interfaces.

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

The MP 370 is configured using Siemens WinCC flexible engineering software. Projects are compiled and downloaded to the panel via MPI, PROFIBUS, or a USB/serial connection.

Does the MP 370 support external storage for logging and recipes?

Yes, the MP 370 includes a CompactFlash slot that supports external storage for alarm logs, recipe data, and project backups.

What is the supply voltage for the 6AV6446-3AA41-2AY3?

The panel operates on 24 V DC, which is the standard supply voltage for SIMATIC HMI panels in this series.

Is the front of the MP 370 panel rated for wash-down or dusty environments?

The front panel carries an IP65 protection rating, making it suitable for environments with dust and water spray. The rear of the unit is rated IP20.

Troubleshooting

Display remains blank after power on

Measure 24 V DC at the power supply connector on the rear of the panel. Check that the supply polarity is correct and the voltage is within tolerance (20.4–28.8 V DC).

Correct any wiring or power supply issues. If supply voltage is confirmed correct and the display remains blank, the internal backlight or power supply board may 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 calibration through the Windows CE Control Panel. If calibration does not resolve the issue, the resistive touch overlay may be damaged and require replacement.

Panel fails to communicate with the PLC

Verify the PROFIBUS or MPI address configured on the panel matches the project settings. Inspect the bus cable for continuity and correct termination resistors at both ends of the bus.

Correct the bus address in the panel's Start Center settings, replace damaged cables, and ensure bus termination is applied only at the two physical ends of the network.

Project cannot be downloaded to the panel

Check the communication path in WinCC flexible (MPI address, baud rate, COM port or USB adapter settings). Confirm the panel is in Transfer mode via the Start Center.

Set the panel to Transfer mode, verify PC adapter settings, and retry the download. If using a USB-to-MPI adapter, ensure the correct driver is installed on the engineering PC.

Panel reboots unexpectedly or freezes during operation

Check the 24 V DC supply for voltage dips or ripple using an oscilloscope or multimeter. Review the alarm log on the CompactFlash card for system event entries prior to the reboot.

Stabilize the power supply and ensure adequate current capacity. If the issue persists, reload the project to the panel and check for corrupted project data or excessive runtime memory usage.

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