Siemens 6AV6520-0AA05-2AD0 OP 73micro

€ 346,00

SKU: 6AV6520-0AA05-2AD0 Category: HMI & Display Brand: Siemens

Description
Additional information

The Siemens 6AV6520-0AA05-2AD0 is the OP 73micro operator panel, part of the SIMATIC HMI Micro Panel family. This compact text-based operator panel is designed for simple machine-level human-machine interface applications and is manufactured by Siemens as part of its SIMATIC HMI product line. It provides a straightforward interface for displaying process values and entering operator commands in space-constrained control cabinets.

The OP 73micro features a 3-line text display capable of showing alphanumeric characters, with a membrane keypad for operator input. It communicates via a point-to-point MPI or PROFIBUS DP interface, allowing direct connection to SIMATIC S7-200 and S7-300 PLCs. The panel is configured using WinCC flexible Micro engineering software and supports a limited number of tags, screens, and alarms suited to its compact design. It operates on a 24 V DC supply and is rated IP65 on the front face for protection against dust and water ingress.

The OP 73micro is typically used in simple machine automation scenarios where a full graphical HMI is not required, such as packaging machines, conveyor systems, and small production units. Its compact footprint makes it suitable for integration into tight control panel cutouts. The panel is commonly found in industries such as food and beverage, automotive assembly, and general manufacturing where basic operator interaction and status display are sufficient.

Technical Specifications

Display Type	Text LCD, 3-line alphanumeric
Display Characters	4 x 12 characters per line
Input/Operating Voltage	24 V DC
Power Consumption	2.5 W (typical)
Communication Interface	MPI / PROFIBUS DP (RS-485), point-to-point
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, snap-in
Certifications	CE, UL, cULus
Engineering Software	WinCC flexible Micro
Compatible PLCs	SIMATIC S7-200, S7-300

Common Error Codes & System Events

System Error 1: Configuration data in the panel is invalid or corrupted, typically after a failed download or memory fault.
Re-download the project from WinCC flexible Micro. If the error persists, perform a factory reset and re-transfer the configuration.
System Error 2: Communication connection to the PLC has been lost or cannot be established.
Check the MPI/PROFIBUS cable connections and termination resistors. Verify the PLC address and baud rate settings match the panel configuration.
System Error 3: Operator panel internal memory error detected during self-test at startup.
Cycle power to the panel. If the error recurs, the panel may require replacement or factory service.
No Connection to PLC: The panel cannot establish communication with the configured SIMATIC PLC.
Verify cable wiring on the RS-485 interface, confirm correct MPI address assignment, and ensure the PLC is in RUN or STOP mode and powered on.
Tag Read Error: A configured tag address cannot be read from the PLC, typically due to an incorrect DB or variable address.
Review the tag configuration in WinCC flexible Micro and confirm the PLC data block or variable address exists and is accessible.
Transfer Mode Active: The panel is waiting for a project download from the engineering PC.
Initiate the project transfer from WinCC flexible Micro, or cycle power to exit transfer mode if a transfer is not intended.
Overflow: A numeric input value entered by the operator exceeds the configured limit for the associated tag.
Check the configured high/low limits for the tag in WinCC flexible Micro and adjust as appropriate, or instruct the operator to enter a value within the valid range.

Frequently Asked Questions

Which PLCs are compatible with the OP 73micro (6AV6520-0AA05-2AD0)?

The OP 73micro is compatible with SIMATIC S7-200 and S7-300 PLCs via MPI or PROFIBUS DP point-to-point communication. It is not designed for use with S7-400 or third-party PLCs.

What software is required to configure the OP 73micro?

The panel is configured using Siemens WinCC flexible Micro, which is the entry-level version of the WinCC flexible engineering software. Projects are transferred to the panel via the MPI/PROFIBUS interface.

What is the supply voltage for the 6AV6520-0AA05-2AD0?

The OP 73micro requires a 24 V DC power supply. Ensure the supply is within the specified tolerance range to avoid panel faults.

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

The front face of the OP 73micro is rated IP65, providing protection against dust ingress and low-pressure water jets. The rear of the panel is rated IP20.

Can the OP 73micro display graphical content or images?

No, the OP 73micro is a text-only panel and does not support graphical displays or bitmap images. It is limited to alphanumeric text across its 3-line LCD display.

Troubleshooting

Display remains blank after power is applied

Measure the 24 V DC supply voltage at the panel power connector. Check that polarity is correct and voltage is within the specified range.

Correct any wiring errors or supply voltage issues. If the supply is confirmed correct and the display remains blank, the panel's internal power circuit or LCD may be faulty and the unit should be repaired or replaced.

Panel shows 'No Connection to PLC' or communication error at startup

Inspect the MPI/PROFIBUS cable for damage, loose connectors, or missing termination resistors at both ends of the bus. Verify the MPI address configured in the panel matches the PLC's MPI address.

Replace or reseat the communication cable, install correct bus termination resistors, and confirm matching MPI/PROFIBUS addresses in both the panel configuration and PLC settings.

Project transfer from WinCC flexible Micro fails or times out

Check that the panel is in transfer mode (indicated on the display) and that the correct communication port and baud rate are selected in WinCC flexible Micro on the engineering PC.

Set the panel to transfer mode manually if required, verify PC-to-panel cable integrity, and ensure the baud rate and interface settings in WinCC flexible Micro match the panel's configuration.

Operator keypad buttons are unresponsive or intermittent

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 keys remain unresponsive, the membrane keypad assembly may be worn or damaged and the panel should be sent for repair or replacement.

Panel repeatedly restarts or enters an error loop after power-on

This may indicate corrupted configuration data in the panel's internal memory, often caused by an interrupted project transfer or power loss during download.

Place the panel in transfer mode and re-download the project from WinCC flexible Micro. If the issue persists, perform a factory reset of the panel before re-transferring the project.

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