Siemens 6AV6520-0AA05-2AC0 SIMATIC OP 73

Name: Siemens 6AV6520-0AA05-2AC0 SIMATIC OP 73
Brand: Siemens
SKU: 6AV6520-0AA05-2AC0
Price: 346.00 EUR
Availability: InStock

€ 346,00

Condition

Clear

SKU: 6AV6520-0AA05-2AC0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6520-0AA05-2AC0 is an Operator Panel (OP 73) belonging to the SIMATIC HMI Basic Panels family. It is a compact, text-based operator panel designed for straightforward machine-level operator control and monitoring tasks. This unit is manufactured by Siemens and is part of the entry-level HMI portfolio intended for simple visualization and control applications.

The OP 73 features a monochrome LCD display capable of showing up to 3 lines of text, allowing operators to view process values, messages, and status information. It communicates via the MPI (Multi-Point Interface) and PROFIBUS DP protocols, enabling direct integration with Siemens SIMATIC S7 PLCs. The panel is configured using WinCC flexible Compact software and supports a limited number of tags, making it suitable for straightforward control tasks. The housing is rated IP65 on the front face, providing protection against dust and water jets in industrial environments.

The SIMATIC OP 73 is widely deployed in manufacturing, packaging, and process automation applications where basic operator interaction is required at the machine level. It is commonly found on conveyor systems, pumping stations, and simple machine tools where a full graphical HMI is not necessary. Its compact form factor and low power consumption make it suitable for panel installations with limited space.

Technical Specifications

Display Type	Monochrome LCD
Display Lines	3 lines of text
Characters per Line	12 characters
Input/Operating Voltage	24 V DC
Power Consumption	2.5 W (typical)
Communication Interface	MPI / PROFIBUS DP
Configuration Software	WinCC flexible Compact
IP Rating (Front)	IP65
IP 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 OP 73 and the connected PLC. The panel cannot establish or maintain a connection to the controller.
Check MPI/PROFIBUS cable connections and termination resistors. Verify the PLC address settings match the configuration in WinCC flexible. Ensure the PLC is in RUN mode.
Event ID: 10001: Connection to PLC interrupted during operation. The panel has lost communication with the configured PLC.
Inspect the MPI/PROFIBUS cable for damage or loose connectors. Check bus termination at both ends of the network. Restart the panel and PLC if the connection is not restored.
Event ID: 20000: Configuration error detected. The project loaded on the panel is incompatible or corrupt.
Reload the project from WinCC flexible Compact. Verify the project was compiled without errors before transferring. Check that the firmware version on the panel is compatible with the project.
Event ID: 20001: Transfer mode active. The panel is waiting for a project download from the configuration PC.
Transfer the project using WinCC flexible Compact via the MPI interface, or press the appropriate key combination to exit transfer mode and resume normal operation.
Event ID: 30000: System memory error. Internal memory check has detected an inconsistency.
Perform a factory reset of the panel and reload the project. If the error persists, the panel may require repair or replacement of internal components.
Event ID: 40000: Operating system error. An unexpected internal software fault has occurred.
Power cycle the panel. If the fault recurs, perform a firmware update using the appropriate Siemens update tool and reload the project configuration.
Event ID: 50000: Power supply undervoltage detected. The supply voltage has dropped below the minimum operating threshold.
Measure the 24 V DC supply at the panel connector. Ensure the power supply unit is rated for the panel load and that cable voltage drop is within acceptable limits.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP 73 (6AV6520-0AA05-2AC0)?

The OP 73 is compatible with Siemens SIMATIC S7-200, S7-300, and S7-400 PLCs via MPI or PROFIBUS DP communication interfaces. It can also connect to SIMATIC S7-200 via PPI protocol depending on configuration.

What software is required to configure the OP 73?

The OP 73 is configured using Siemens WinCC flexible Compact software. Projects are transferred to the panel via the MPI interface using a PC adapter cable.

What is the supply voltage for the 6AV6520-0AA05-2AC0?

The panel requires a 24 V DC power supply. Ensure the supply is stable and within the specified tolerance range to avoid communication or operational errors.

What is the front panel protection rating of the OP 73?

The front face of the OP 73 is rated IP65, providing protection against dust ingress and low-pressure water jets, making it suitable for typical industrial panel installations.

Can the OP 73 display graphical content or images?

No, the OP 73 is a text-based operator panel and does not support graphical content or bitmap images. It is limited to displaying text across 3 lines of up to 12 characters each.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the panel power connector using a multimeter. Verify polarity is correct and voltage is within the specified range.

Restore the correct 24 V DC supply. If voltage is correct and the display remains blank, inspect the internal fuse and consider returning the unit for repair or replacement of the power supply section.

Panel shows 'No connection to PLC' or communication error message

Inspect the MPI or PROFIBUS DP cable for physical damage, loose connectors, or incorrect termination. Verify the PLC address and baud rate settings match those configured in the WinCC flexible project.

Replace or reseat the communication cable. Correct the PLC address and baud rate in the WinCC flexible project and retransfer. Ensure bus termination resistors are active only at both physical ends of the network.

Panel is stuck in transfer mode and will not start normally

The panel is waiting for a project download. This can occur if the panel was powered off during a transfer or if no valid project is stored in memory.

Connect a PC with WinCC flexible Compact and transfer a valid project to the panel via the MPI interface. Alternatively, use the panel key combination to exit transfer mode if a project is already loaded.

Incorrect or garbled characters displayed on screen

This may indicate a corrupted project file or a mismatch between the configured character set and the panel firmware version.

Recompile and retransfer the project from WinCC flexible Compact. Ensure the firmware version on the panel is compatible with the WinCC flexible version used. Perform a factory reset before reloading if the issue persists.

Panel repeatedly restarts or reboots unexpectedly

Unstable or noisy 24 V DC power supply is a common cause. Also check for excessive ambient temperature exceeding the 0 to 50 °C operating range.

Measure the supply voltage under load for ripple or voltage dips. Replace the power supply unit if unstable. Ensure adequate ventilation around the panel to keep operating temperature within specification.

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