Siemens 6AV6520-0AA05-2AA0 SIMATIC OP 73

Name: Siemens 6AV6520-0AA05-2AA0 SIMATIC OP 73
Brand: Siemens
SKU: 6AV6520-0AA05-2AA0
Price: 346.00 EUR
Availability: InStock

€ 346,00

Condition

Clear

SKU: 6AV6520-0AA05-2AA0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6520-0AA05-2AA0 is the SIMATIC OP 73 operator panel, part of the SIMATIC HMI Basic Panels family from Siemens. It is a compact, key-operated operator panel designed for simple machine-level operator control and monitoring tasks. The OP 73 provides a straightforward text-based interface for applications where a full graphical display is not required.

The OP 73 features a 3-line text display capable of showing alphanumeric characters, with a resolution of 12 characters per line. It is equipped with a membrane keypad for operator input, including function keys and navigation keys. The panel communicates via MPI and PROFIBUS DP interfaces, enabling integration with Siemens S7-200, S7-300, and S7-400 PLCs. Configuration is performed using WinCC flexible Micro or STEP 7 Micro/WIN software. The unit operates on 24 V DC supply and is rated IP65 at the front panel for protection against dust and water ingress.

The SIMATIC OP 73 is commonly used in manufacturing machinery, conveyor systems, packaging equipment, and other industrial automation applications where compact, cost-effective operator interface solutions are required. Its small form factor and robust construction make it suitable for panel door mounting in space-constrained control cabinets. The MPI/PROFIBUS DP connectivity ensures seamless integration into existing Siemens automation architectures.

Technical Specifications

Display Type	Text LCD
Display Lines	3 lines
Characters per Line	12
Input/Operating Voltage	24 V DC
Power Consumption	2.5 W
Communication Interface	MPI, PROFIBUS DP
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
Series/Product Family	SIMATIC HMI Basic Panels

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 or PROFIBUS DP cable connections and termination resistors. Verify the PLC address settings match the configuration in WinCC flexible. Ensure the PLC is powered and in RUN mode.
Event ID: 10001: Configured PLC address not found on the bus. The operator panel cannot locate the target controller at the specified network address.
Verify the PLC station address in the project configuration matches the physical DIP switch or software settings on the PLC. Check bus cable integrity and termination.
Event ID: 20000: Project download error. A fault occurred during the transfer of the configuration project from the engineering PC to the OP 73.
Check the PC-to-panel transfer cable connection. Ensure WinCC flexible is set to the correct transfer mode and the panel is in transfer mode. Retry the download.
Event ID: 40000: Internal device fault detected. The panel has identified a hardware or firmware error during self-diagnostics.
Perform a panel reset by cycling power. If the fault persists, reload the firmware and project. Contact Siemens technical support or arrange for unit repair if the fault continues.
Event ID: 50000: Operating system error or firmware corruption detected on the OP 73.
Reload the panel firmware using the appropriate Siemens ProSave tool or WinCC flexible. Ensure the correct firmware version compatible with the project is used.
Event ID: 70000: Tag limit exceeded. The number of configured tags in the project exceeds the maximum supported by the OP 73.
Review the project configuration in WinCC flexible and reduce the number of configured tags to within the supported limit for the OP 73 panel.

Frequently Asked Questions

What PLCs are compatible with the SIMATIC OP 73 (6AV6520-0AA05-2AA0)?

The OP 73 is compatible with Siemens S7-200, S7-300, and S7-400 PLCs via MPI and PROFIBUS DP interfaces. It can also communicate with SIMATIC S7-200 via the PPI protocol using the appropriate configuration.

What software is used to configure the OP 73?

The OP 73 is configured using Siemens WinCC flexible Micro or WinCC flexible Standard engineering software. For S7-200 applications, STEP 7 Micro/WIN with the appropriate add-on can also be used.

What is the supply voltage for the 6AV6520-0AA05-2AA0?

The OP 73 operates on a 24 V DC supply voltage, which is standard for SIMATIC HMI panels and typically sourced from a DIN rail power supply unit.

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

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

Can the OP 73 display graphical content or images?

No, the OP 73 is a text-only operator panel with a 3-line alphanumeric LCD display. It does not support graphical content or bitmap images; for graphical HMI functionality, a SIMATIC TP or MP panel would be required.

Troubleshooting

Display remains blank after power on

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

Restore the correct 24 V DC supply. If the supply voltage is correct and the display remains blank, the internal power supply or display unit may be faulty and the panel should be sent for repair or replacement.

Panel shows 'No connection to PLC' or communication error on startup

Inspect the MPI or PROFIBUS DP cable for physical damage, loose connectors, or missing bus termination resistors at the cable ends. Verify the PLC address configured in the project matches the actual PLC station address.

Replace or reseat the communication cable, install correct bus termination resistors, and correct any address mismatches in the WinCC flexible project. Re-download the project to the panel and cycle power.

Project download from PC to OP 73 fails

Confirm the panel is in transfer mode (accessible via the panel's start screen or by holding the appropriate key combination during power-on). Check the PC-to-panel cable and the selected communication port in WinCC flexible.

Set the panel to transfer mode, use the correct PC adapter cable (e.g., PC/MPI adapter or USB-MPI adapter), select the correct COM port in WinCC flexible, and retry the download. Ensure the firmware version on the panel is compatible with the project.

Function keys on the membrane keypad do not respond

Inspect the membrane keypad surface for physical damage, contamination, or deformation. Test each key systematically using a diagnostic screen if available in the project.

Clean the keypad surface with a dry cloth. If individual keys are unresponsive due to membrane damage, the keypad membrane assembly should be replaced by a qualified repair technician.

Panel repeatedly restarts or resets unexpectedly

Monitor the 24 V DC supply voltage for voltage dips or instability, which can cause the panel to reset. Check for electromagnetic interference sources near the panel or communication cables.

Ensure the 24 V DC power supply has sufficient current capacity for the panel load. Add proper cable shielding and grounding to reduce EMI. If the issue persists with a stable supply, the panel may have a firmware or hardware fault requiring service.

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