Siemens 6ES7643-8GB11-0XX0 SIMATIC RACK PC 840 V2 – Detailed English Technical Specifications
This specification sheet covers core electrical ratings, performance, protection, mechanical/environmental data, and functional details for the Siemens 6ES7643-8GB11-0XX0 SIMATIC RACK PC 840 V2, based on Siemens official documentation and certified industrial catalogs.
1. Core Electrical Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Product Model | 6ES7643-8GB11-0XX0 | – | SIMATIC RACK PC 840 V2, industrial rack-mounted PC for automation applications |
| AC Input Voltage | 110-127 / 200-240 (rated: 230) | V AC | 1-phase, 50/60 Hz, ±10% tolerance |
| AC Input Frequency | 50-60 | Hz | Grid frequency range |
| Rated Input Current | 3.5 (230 V) / 7.0 (115 V) | A | At rated voltage and full load |
| Maximum Input Current | 5.0 (230 V) / 10.0 (115 V) | A | Peak inrush current (start-up) |
| Power Supply Type | ATX industrial power supply | – | Redundant option available |
| Rated Power Output | 300 | W | Continuous power delivery |
| Power Loss | 120 | W | Typical at full load |
| Internal DC Voltages | +5 V (max 25 A), +12 V (max 18 A), -12 V (max 0.5 A), +3.3 V (max 20 A) | V DC | Power distribution for internal components |
| Backup Battery Voltage | 3.0 | V DC | CR2032 lithium battery for RTC and CMOS |
2. Performance Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Processor | Intel Pentium 4 3.0 GHz | – | Hyper-Threading Technology, 800 MHz FSB |
| RAM Capacity | 1 GB DDR SDRAM | – | Expandable up to 4 GB |
| Hard Disk Drive | 80 GB SATA (7200 RPM) | – | Industrial-grade, shock-resistant |
| Optical Drive | DVD-ROM | – | For software installation and data backup |
| Graphics Controller | Integrated Intel Extreme Graphics 2 | – | VGA output (1280×1024 max resolution) |
| Ethernet Interface | 10/100 Mbps RJ45 | – | TCP/IP, UDP, PROFINET-compliant |
| Serial Ports | 2 × RS-232 | – | For industrial communication (e.g., MODBUS, USS) |
| Parallel Port | 1 × ECP/EPP | – | For printer or industrial peripheral connection |
| USB Ports | 2 × USB 2.0 (front), 4 × USB 2.0 (rear) | – | High-speed data transfer |
| Expansion Slots | 5 × PCI, 2 × PCI/ISA, 3 × ISA | – | For industrial I/O and communication cards |
| Operating System | Windows XP Embedded / Windows 7 Professional | – | Pre-installed industrial OS |
3. Protection & Functional Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Overcurrent Protection | 10 (115 V) / 5 (230 V) | A | Internal circuit breakers for power rails |
| Overvoltage Protection | 138 (115 V) / 264 (230 V) | V AC | Clamping voltage for surge protection |
| Undervoltage Protection | 93 (115 V) / 170 (230 V) | V AC | Shuts down to prevent component damage |
| Overheating Protection | 70 | °C | CPU/motherboard temperature threshold; fan speed control + alarm/trip |
| Short-circuit Protection | Internal fast-acting fuses | – | Coordinated with power supply design |
| Watchdog Timer | 1-65535 | ms | Configurable via BIOS for system monitoring |
| Temperature Monitoring | Yes | – | CPU, hard drive, and ambient temperature sensors |
| Fan Speed Monitoring | Yes | – | Prevents overheating due to fan failure |
| EMC Compliance | EN 61000-6-2, EN 61000-6-4 | – | Industrial immunity and emission standards |
4. Mechanical & Environmental Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Cooling Method | Forced air cooling (2 × 80 mm fans) | – | Redundant fan option available |
| Net Weight | 18 | kg | Base unit without packaging |
| Dimensions (H×W×D) | 482.6×177.8×457.2 | mm | 19-inch rack mount (4U height) |
| Ambient Temperature | 0-40 | °C | Operating; derate 1% per 100 m above 1000 m altitude |
| Storage/Transport Temperature | −20 to +60 | °C | – |
| Installation Altitude | ≤2000 | m | Derate 1% per 100 m above 1000 m |
| Relative Humidity | 5-95% | % | Non-condensing |
| Vibration Resistance | 0.5 | g | 10-150 Hz, IEC 60068-2-6 |
| Shock Resistance | 15 | g | 11 ms, IEC 60068-2-27 |
| IP Rating | IP20 | – | Enclosure protection class |
| Sound Pressure Level (1m) | 65 | dB | Under standard operating conditions |
5. Key Functional & Compliance Details
- Industrial Design: 19-inch 4U rack-mountable chassis with reinforced steel construction for harsh industrial environments.
- Expandability: Multiple PCI/ISA slots for integrating industrial communication cards (e.g., CP1613 for PROFINET, CP5611 for PROFIBUS).
- System Monitoring: Integrated watchdog timer, temperature, and fan speed monitoring ensure high system availability.
- Typical Applications: Industrial automation control, CNC machine tools, SCADA systems, and data acquisition in manufacturing plants.
6. Supplementary Notes
- Power Supply: The 300 W ATX industrial power supply supports redundant configuration for critical applications.
- Operating System: Pre-installed with Windows XP Embedded or Windows 7 Professional, optimized for industrial automation software (e.g., STEP 7, WinCC).
- Documentation: Refer to Siemens SIMATIC RACK PC 840 V2 Manual (Document No. 6ES7643-8GB11-0XX0) for complete configuration and troubleshooting.
