Siemens 6AV6446-2AA45-0BY3 SIMATIC MP 370

Name: Siemens 6AV6446-2AA45-0BY3 SIMATIC MP 370
Brand: Siemens
SKU: 6AV6446-2AA45-0BY3
Price: 5722.00 EUR
Availability: InStock

€ 5.722,00

Condition

Clear

SKU: 6AV6446-2AA45-0BY3 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6446-2AA45-0BY3 is a Multi Panel (MP 370) belonging to the SIMATIC HMI family, designed for demanding machine-level and process visualization applications. This unit features a 15-inch TFT display and is part of the MP 370 series, which represents a high-performance tier within Siemens' panel-based HMI portfolio. It operates as a standalone operator panel capable of running WinCC flexible runtime for comprehensive process visualization.

The MP 370 panel is equipped with a high-resolution color TFT display with touch screen functionality, enabling intuitive operator interaction. It supports multiple communication interfaces including PROFIBUS DP and MPI, allowing direct connection to SIMATIC S7 PLCs and other automation components. The panel runs on a Windows CE operating system and provides sufficient onboard memory for complex visualization projects with numerous screens, tags, and alarm records. The robust industrial housing is designed to meet IP65 protection at the front panel, making it suitable for environments where dust and water ingress are concerns.

The SIMATIC MP 370 is widely deployed in manufacturing automation, machine tool control, packaging machinery, and process plant environments. Its large display size and touch interface make it well suited for applications requiring detailed process overviews, trend displays, and alarm management at the machine or cell level. Industries such as automotive, food and beverage, chemical processing, and general factory automation commonly utilize this panel for operator workstation applications.

Technical Specifications

Display Size	15 inch
Display Type	TFT color
Display Resolution	1024 x 768 px (XGA)
Display Colors	64,000 colors
Touch Technology	Resistive touch screen
Operating System	Windows CE
Input/Operating Voltage	24 V DC
Power Consumption	Approx. 40 W
Communication Interface	PROFIBUS DP, MPI, RS-422/485
Ethernet Interface	10/100 Mbit/s (RJ45)
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, cULus

Common Error Codes & System Events

Event ID: 10000: Communication error between the HMI panel and the connected PLC or controller. The configured connection cannot be established.
Check PROFIBUS/MPI address settings, verify cable connections and termination resistors, and confirm the PLC is in RUN mode.
Event ID: 10001: Connection to the PLC was interrupted during runtime after a previously successful connection.
Inspect communication cables for damage, verify network configuration, and check for electromagnetic interference on the bus.
Event ID: 20000: Tag read error. The HMI panel cannot read the value of a configured tag from the PLC.
Verify the tag address exists in the PLC program, check data type consistency, and confirm the PLC memory area is accessible.
Event ID: 40000: Project download error. The project could not be transferred to the panel successfully.
Check the transfer cable or network connection, ensure sufficient free memory on the panel, and verify WinCC flexible project compatibility with the panel firmware version.
Event ID: 50000: Runtime system error. An internal error occurred in the WinCC flexible runtime environment.
Restart the panel. If the error persists, reload the project or update the panel firmware using ProSave.
Event ID: 70000: Alarm buffer overflow. The number of pending alarms has exceeded the configured alarm buffer capacity.
Acknowledge and clear existing alarms, increase the alarm buffer size in the WinCC flexible project configuration, and investigate the root cause of repeated alarms.
Event ID: 80000: Recipe data error. A recipe record could not be read from or written to the configured storage location.
Check available storage memory, verify recipe configuration in the project, and ensure the target storage medium (flash or memory card) is properly inserted and not write-protected.

Frequently Asked Questions

Which PLC families can the SIMATIC MP 370 communicate with?

The MP 370 supports direct communication with SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP interfaces. Ethernet-based connections to S7 controllers are also supported through the integrated 10/100 Mbit/s Ethernet port.

What software is required to create and download projects to the MP 370?

Projects for the MP 370 are created using Siemens WinCC flexible engineering software. The project is then transferred to the panel via Ethernet, USB, or serial connection using the transfer function within WinCC flexible or the ProSave utility.

What is the supply voltage for the 6AV6446-2AA45-0BY3?

The panel requires a 24 V DC power supply. The permissible voltage range is typically 19.2 V DC to 28.8 V DC, and the power supply must be capable of providing sufficient current for the panel's consumption of approximately 40 W.

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

Yes, the front panel bezel carries an IP65 protection rating, making it resistant to dust ingress and low-pressure water jets. The rear of the unit is rated IP20 and must be protected from moisture and contamination.

Can the MP 370 display trends and historical data?

Yes, the WinCC flexible runtime on the MP 370 supports trend displays and logging of tag values and alarms to internal flash memory or an external memory card, allowing operators to review historical process data directly on the panel.

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 that the voltage is within the 19.2 V to 28.8 V range. Inspect the internal fuse if accessible.

Correct the supply voltage if out of range. Replace a blown fuse with the correct rating. If the backlight has failed, the panel will require backlight or display assembly replacement.

HMI panel shows 'No connection to PLC' or communication errors at runtime

Verify the PROFIBUS or MPI bus address configured on the panel matches the project settings. Check all bus cables, connectors, and termination resistors at both ends of the network segment.

Correct any address mismatches in the WinCC flexible project or on the panel's communication settings. Replace damaged cables or connectors. Ensure only the two physical ends of the bus segment have termination resistors enabled.

Touch screen does not respond or responds inaccurately to touch input

Check whether the touch screen responds at all by testing multiple areas of the display. Determine if the issue is a complete failure or a calibration drift. Access the touch calibration utility from the Windows CE Control Panel.

Recalibrate the touch screen using the calibration tool in the Windows CE Control Panel. If the touch screen remains unresponsive after calibration, the touch overlay or touch controller hardware may be faulty and require replacement.

Project transfer to the panel fails or times out

Verify the transfer cable or Ethernet connection between the engineering PC and the panel. Confirm the panel is set to Transfer mode. Check that the WinCC flexible version is compatible with the panel firmware version.

Switch the panel to Transfer mode via the Start Center. Use ProSave to update the panel firmware if a version mismatch exists. Try an alternative transfer method (Ethernet instead of serial) if one method fails.

Panel restarts unexpectedly or freezes during operation

Check the 24 V DC supply for voltage drops or ripple, particularly under load. Review the alarm and event log for any recorded system events prior to the restart. Assess whether the panel enclosure temperature is within the 0 to 50 degree Celsius operating range.

Stabilize the power supply and ensure adequate current capacity. Improve enclosure ventilation if overheating is suspected. Reload the WinCC flexible project to rule out project file corruption. If restarts persist, the panel may require repair or replacement of the internal power supply board.

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