Description

The Siemens 6AV6641-0AA11-0AX0, also known as the SIMATIC OP73 Operator Panel, is a compact 3-inch monochrome LCD HMI designed for direct machine-level operation and monitoring within the SIMATIC HMI product family . This robust operator interface served as a reliable solution for small to mid-size automation applications requiring efficient human-machine interaction.

The Siemens 6AV6641-0AA11-0AX0 combines a backlit 160 × 48 pixel LC display with a durable membrane keypad featuring 8 system keys and 4 user-programmable function keys . Its integrated RS485 interface supports MPI and PROFIBUS-DP protocols up to 1.5 Mbit/s , enabling seamless connection to SIMATIC S7-200, S7-300, and S7-400 controllers. With an IP65-rated front panel and Linux-based operating system configured via WinCC flexible Compact , this operator panel delivers dependable performance in diverse industrial environments.

 

Application Scenarios

In a medium-sized plastics extrusion plant, operators used the Siemens 6AV6641-0AA11-0AX0 to monitor temperature zones and adjust screw speeds on legacy machinery controlled by a SIMATIC S7-300 PLC. The original HMI had become unresponsive due to aging components, threatening production continuity while the facility planned a gradual control system upgrade rather than a costly immediate replacement.

The maintenance team sourced a tested Siemens 6AV6641-0AA11-0AX0 as a direct replacement, reloading the existing WinCC flexible configuration onto the new unit. Within hours, the extrusion line was fully operational, restoring clear temperature readouts and responsive parameter adjustments through the Siemens 6AV6641-0AA11-0AX0‘s intuitive membrane interface. The facility’s controls engineer noted that sourcing this discontinued panel bought the plant two additional years of production stability, allowing the capital budget to be allocated strategically rather than forcing an emergency system migration. The message system of the Siemens 6AV6641-0AA11-0AX0, capable of handling 500 alarms, continued to provide immediate fault notifications that helped operators maintain product quality .

 

Parameters

Main Parameters	Value/Description
Product Model	6AV6641-0AA11-0AX0
Manufacturer	Siemens AG
Product Category	Operator Panel / HMI
Series	SIMATIC OP73
Display Type	3″ STN LCD, monochrome, backlit
Display Resolution	160 × 48 pixels
Keyboard Type	Membrane keypad
Function Keys	4 user-programmable function keys + 8 system keys
Onboard Memory	256 KB user data memory (Flash)
Communication Interface	RS485 (MPI, PROFIBUS-DP up to 1.5 Mbit/s)
Supply Voltage	24 V DC (20.4 V – 28.8 V range)
Current Consumption	0.1 A
Front Protection Class	IP65 (IP20 rear)
Operating Temperature	0°C to +50°C
Dimensions (W×H×D)	154 mm × 84 mm × 28.5 mm
Weight	Approx. 0.25 kg
Configuration Software	WinCC flexible Compact 2004 SP1 or higher
Operating System	Linux
Certifications	CE, UL, CSA, cULus, GL, ABS, BV, DNV, NEMA 4x
Lifecycle Status	Discontinued (Product status since October 2022)