Application Scenarios
In a mid-sized injection molding facility, the existing text-based operator panels on several production machines were failing due to aging backlights and unresponsive keys. The plant engineers sourced the Siemens 6AV6641-0AA11-0AX0 as a drop-in replacement. The OP 73’s compact footprint (154mm × 84mm front) and same mounting cutout dimensions as its predecessor (OP 3) allowed for direct mechanical retrofit without cabinet modifications . By connecting the panel via the MPI interface to the existing S7-300 PLC network, operators regained full control over machine parameters, production counters, and alarm acknowledgment. The result was a swift restoration of production uptime at a fraction of the cost of a full system upgrade.
This case underscores the core value of the Siemens OP 73: providing a reliable, cost-effective solution for breathing new life into legacy automation systems. It addresses the critical pain point of obsolescence in industrial facilities that are not yet ready for a complete control system overhaul. Whether used in packaging lines, conveyor systems, or simple process skids, the 6AV6641-0AA11-0AX0 delivers dependable operator interaction that keeps production running efficiently.
Parameters
| Main Parameters | Value/Description |
|---|---|
| Product Model | 6AV6641-0AA11-0AX0 (SIMATIC OP 73) |
| Manufacturer | Siemens |
| Product Category | Text-Based Operator Panel (HMI) |
| Display Type | 3-inch LCD with backlight, 160 × 48 pixels |
| Character Display | 4 lines × 20 characters |
| Backlight Lifetime | 100,000 hours at 25°C |
| Keyboard | Membrane keypad with 8 system keys and 4 user-configurable function keys |
| Communication Interface | 1 × RS485 (MPI, PROFIBUS DP up to 1.5 Mbit/s) |
| Supply Voltage | 24 V DC (19.2 – 28.8 V) |
| Rated Current | 0.1 A |
| Front Protection Class | IP65 (dust-tight and protected against water jets) |
| Rear Protection Class | IP20 |
| Housing Dimensions (W×H×D) | 154 × 84 × 28.5 mm |
| Weight | Approx. 0.25 kg |
| Operating Temperature | 0°C to 50°C |
| Configuration Software | WinCC flexible 2004 Compact HSP (not TIA Portal compatible) |
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