Siemens 6AV6520-0AA05-2BD0 SIMATIC OP 73micro

Name: Siemens 6AV6520-0AA05-2BD0 SIMATIC OP 73micro
Brand: Siemens
SKU: 6AV6520-0AA05-2BD0
Price: 346.00 EUR
Availability: InStock

€ 346,00

Condition

Clear

SKU: 6AV6520-0AA05-2BD0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6520-0AA05-2BD0 is the SIMATIC OP 73micro operator panel, part of the Siemens SIMATIC HMI Micro Panel family. It is a compact, text-based operator panel designed for straightforward machine-level operator control and monitoring tasks. This unit provides a cost-effective solution for applications requiring basic HMI functionality without the overhead of a full graphical display system.

The OP 73micro features a 3-line LCD text display capable of showing alphanumeric characters, with a membrane keypad for operator input. It communicates via a PROFIBUS DP or MPI interface, enabling direct integration with Siemens S7-200 and S7-300 PLCs. The panel is configured using WinCC flexible Micro engineering software and supports a limited number of screens, variables, and alarms suited to its compact design. It operates on a 24 V DC supply and is rated for industrial environments with an IP65 protection rating on the front face.

The SIMATIC OP 73micro is widely used in small-scale machine automation, conveyor systems, packaging machinery, and simple process control applications where a full graphical HMI is not required. Its compact panel-mount form factor and low power consumption make it suitable for space-constrained control cabinet installations. The unit is particularly common in OEM machine building where cost and simplicity are primary considerations.

Technical Specifications

Display Type	LCD text display
Display Lines	3 lines
Characters per Line	12 characters
Input/Operating Voltage	24 V DC
Power Consumption	2.5 W (typical)
Communication Interface	PROFIBUS DP / MPI
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
Engineering Software	WinCC flexible Micro

Common Error Codes & System Events

Event ID: 10000: Communication error between the OP 73micro and the connected PLC. The panel cannot establish or maintain a connection.
Check PROFIBUS/MPI 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 the PLC was interrupted during operation.
Inspect the communication cable for damage or loose connectors. Verify bus termination and cable shielding. Restart the panel and PLC if the connection is not re-established automatically.
Event ID: 20000: Configuration error detected. The project loaded on the panel is incompatible or corrupt.
Re-download the project from WinCC flexible Micro to the panel. Ensure the software version used for engineering matches the panel firmware version.
Event ID: 20001: No project found on the panel. The panel starts without a valid configuration.
Transfer a valid project to the panel using WinCC flexible Micro via the MPI/PROFIBUS interface.
Event ID: 30000: Internal device error or hardware fault detected on the panel.
Perform a power cycle. If the fault persists, check the 24 V DC supply voltage. The unit may require repair or replacement if the fault is not resolved.
Event ID: 40000: Alarm buffer overflow. The number of pending alarms exceeds the panel's alarm buffer capacity.
Acknowledge and clear existing alarms on the panel. Review the alarm configuration in WinCC flexible to reduce the number of simultaneously active alarms.

Frequently Asked Questions

Which PLCs are compatible with the SIMATIC OP 73micro?

The OP 73micro is compatible with Siemens S7-200 and S7-300 PLCs via MPI or PROFIBUS DP communication interfaces. It is not designed for use with S7-400 or non-Siemens controllers.

What software is required to configure the OP 73micro?

The OP 73micro is configured using Siemens WinCC flexible Micro engineering software. Projects are transferred to the panel via the MPI or PROFIBUS DP interface.

What is the supply voltage for the 6AV6520-0AA05-2BD0?

The panel requires a 24 V DC power supply. Ensure the supply is within the specified tolerance range to prevent operational issues.

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

The front face of the OP 73micro carries an IP65 protection rating, making it suitable for panel-mount installations where dust and water spray may be present.

Can the OP 73micro display graphical content?

No, the OP 73micro is a text-based operator panel with a 3-line alphanumeric LCD display. It does not support graphical screens or bitmap images.

Troubleshooting

Display remains blank after power on

Check the 24 V DC supply voltage at the power connector. Verify polarity and that the supply is within the specified voltage range. Inspect the power connector for loose or damaged wiring.

Correct the supply voltage or wiring. If the supply is confirmed good and the display remains blank, the internal power circuitry or display may be faulty and the unit should be sent for repair.

Panel shows communication error immediately after startup

Verify the MPI or PROFIBUS DP address configured in the panel project matches the physical bus address settings. Check cable connections, termination resistors at both ends of the bus, and that the PLC is powered and in RUN mode.

Correct the bus address in WinCC flexible Micro and re-download the project. Replace damaged cables and ensure proper bus termination. Confirm the PLC program is running.

Project transfer from WinCC flexible Micro fails

Check the USB-to-MPI or PC adapter connection between the engineering PC and the panel. Verify the correct COM port and transfer settings are selected in WinCC flexible Micro. Ensure the panel is in transfer mode.

Place the panel in transfer mode by navigating to the transfer menu on the device. Use a known-good Siemens PC adapter cable. Reinstall the WinCC flexible Micro software if communication still cannot be established.

Alarms are not displayed on the panel

Check the alarm configuration in the WinCC flexible Micro project. Verify that the alarm tags are correctly linked to the PLC data addresses and that the PLC is writing the expected values to trigger alarms.

Correct the tag addressing in the project and re-download to the panel. Confirm the PLC logic is correctly setting the alarm bits. Ensure the alarm view screen is configured and accessible on the panel.

Keypad buttons do not respond

Inspect the membrane keypad for physical damage, contamination, or deformation. Check whether the issue is limited to specific keys or affects all keys. Attempt a power cycle to rule out a temporary firmware hang.

Clean the keypad surface carefully. If specific keys are unresponsive after cleaning and power cycling, the membrane keypad assembly is likely worn or damaged and the unit should be repaired or replaced.

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