SIEMENS 6FC5357-0BB21-0AE0 CONTROL UNIT

Siemens 6FC5357-0BB21-0AE0 – SINUMERIK 840D/DE NCU 572.2 Numerical Control Unit

The Siemens 6FC5357-0BB21-0AE0 is a Numerical Control Unit (NCU) designed for SINUMERIK 840D/DE CNC systems. It provides powerful CNC processing capabilities, PLC integration, and PROFIBUS DP communication support. Although discontinued since September 30, 2017, it remains a valuable spare part for existing SINUMERIK 840D/DE installations.

1. General Information

• Brand: Siemens
• Series: SINUMERIK 840D/DE
• Model Number: 6FC5357-0BB21-0AE0
• Product Type: Numerical Control Unit (NCU 572.2)
• Product Status: Discontinued (Since September 30, 2017)
• Country of Origin: Germany
• Net Weight: 0.750 kg

2. Technical Specifications

Memory & Processing

• NC Memory: 0.5 MB
• PLC Memory: 96 KB
• System Software: Not included

Communication & Interfaces

• Communication Interface: PROFIBUS DP (Prepared)
• Compatibility: SINUMERIK 840D/DE CNC Systems

3. Key Features & Benefits

✅ Optimized for SINUMERIK 840D/DE – Ensures seamless integration into existing CNC setups.
✅ High-Performance Numerical Control Processing – Supports complex CNC operations.
✅ Integrated PLC Capabilities – 96 KB memory for machine logic programming.
✅ PROFIBUS DP Prepared – Allows for flexible industrial communication.
✅ Reliable Spare Part – Essential for maintaining legacy SINUMERIK 840D/DE systems.

4. Applications

CNC Machine Tools
Milling, Turning, and Grinding Machines
Automation in Metalworking & Manufacturing
Retrofitting of Legacy SINUMERIK 840D Systems