Siemens 6RA8000-0MS20-0AA0 Full Official Technical Specifications (English)

1. Basic Product Identity (Siemens Industry Official Definition)

2. Order Code Decoding (Siemens Official Nomenclature Rule)

1. 6RA80: Master series = SINAMICS DCM digital DC drive control platform
2. 00: Zero power stage integration (pure control module, no built-in power circuit)
3. 0M: Hardware variant for THYRIPOL excitation special algorithm package
4. S: Standard control hardware layout for excitation closed-loop regulation
5. 20: I/O & base hardware revision level
6. 0AA0: Base configuration without pre-installed Z suffix option packages

3. Power Supply Electrical Ratings

3.1 Control Electronics Power (24VDC Aux Supply)

• Rated Input Voltage: DC 24 V ±20%
• Max Operating Current Draw: 2.8 A
• Standby Power Consumption: 38 W
• Isolation Class: Reinforced isolation between control & power signal circuits (2 kV test voltage)

3.2 External Power Stage Interface Signals

• Armature Voltage Sensing Input Range: 0–1000 V DC (excitation main loop feedback)
• Field Excitation Current Sensing Input: 0–5 V / 0–20 mA analog feedback interface
• AC Line Synchronization Voltage Input: 100 V / 110 V / 120 V AC (generator PT secondary signal, 50/60 Hz auto-detect)

4. Control & Performance Technical Parameters

4.1 Closed-Loop Control Functions (THYRIPOL Excitation Specialized)

1. Main regulation loops: Generator terminal voltage loop, reactive power loop, power factor loop, stator current limiting loop
2. Supplementary protection loops: Over-excitation, under-excitation, loss of PT signal, loss of synchronization, field overcurrent, rotor earth fault monitoring interface
3. Response bandwidth: Voltage control loop bandwidth ≥120 rad/s; fast transient response for grid fault stabilization
4. Setpoint resolution: 0.01% full scale for voltage/reactive power setpoints

4.2 Control Unit Hardware Core

• Processor: 32-bit high-speed floating-point DSP dedicated for excitation algorithm
• Onboard Memory: 8 MB program RAM, 16 MB flash firmware storage; support removable SD memory card (Siemens S01/S02 option) for backup/parameter cloning
• Control Architecture: Dual CUD slot design (Left = Advanced CUD base, Right = Standard CUD expansion slot; this model factory-equipped with 1x Advanced CUD for THYRIPOL)

5. Digital & Analog I/O Interfaces (Standard Onboard)

5.1 Binary Digital Inputs (BI) – 8 Isolated Channels

• Trigger Level: DC 19 V threshold
• Isolation: Optocoupler isolation, 2 kV dielectric strength
• Function allocation: Fault interlock, breaker status, remote enable/disable, mode switch (auto/manual/excitation test)

5.2 Binary Digital Outputs (BO) – 6 Relay Contact Channels

• Contact Rating: AC 250 V / 5 A resistive; DC 220 V / 3 A resistive
• Predefined functions: Excitation running, fault alarm, voltage limit active, reactive power limit, trip signal, watchdog fault
• Watchdog fail-safe contact: Normally closed, opens on control unit hardware/firmware failure

5.3 Analog Inputs (AI) – 4 Differential Isolated Channels

• Signal types: 0–4 mA / 0–20 mA / ±10 V DC
• Input impedance: >100 kΩ for voltage; 250 Ω for current
• Precision: ±0.1% full scale temperature drift

5.4 Analog Outputs (AO) – 2 Isolated Channels

• Standard signal: 4–20 mA proportional to excitation voltage/current actual value
• Load capacity: Max 500 Ω external load resistance

6. Communication Interfaces (Native Onboard)

1. RS485 Terminal Port (P1): For SINAMICS DCM commissioning via DriveMonitor / STARTER software; supports point-to-point debug
2. PROFIBUS DP Onboard Interface: Standard DP V1 protocol, 9-pin D-SUB connector, up to 12 Mbps baud rate; exchange excitation setpoints, actual values, fault codes with plant DCS/PLC
3. Expansion Slot Compatibility: Accept optional CBE20 PROFINET IO communication board (G20/G21 option suffix) for Ethernet plant networking
4. Local Operator Panel Support: Compatible with BOP20 basic keypad display or AOP30 advanced multi-line panel for on-site parameter tuning

7. Mechanical & Environmental Specifications

7.1 Mechanical Dimensions

• Housing Form Factor: 19-inch rack-mount industrial chassis
• Exact Size (H × W × D): 355 mm × 210 mm × 125 mm
• Mounting: Vertical panel rack installation (standard cabinet mounting brackets pre-fitted)
• Protection Grade: Front panel IP20; rear terminal zone IP00 (for indoor control cabinet installation only)

7.2 Ambient Operating Conditions

• Operating Temperature Range: 0 °C to +55 °C (full rated performance; derate 2% per °C above 40 °C)
• Storage/Transport Temperature: -40 °C to +70 °C
• Relative Humidity: 5% to 95% non-condensing (40 °C max dew point)
• Vibration Resistance (IEC 60068-2-6): 0.35 mm displacement / 5 g acceleration, 10–150 Hz frequency band
• Shock Resistance (IEC 60068-2-27): 30 g peak half-sine pulse, 11 ms duration (non-operating transport)
• Max Installation Altitude: 1000 m above sea level (no derating; derate power 1% per 100 m above 1000 m)

8. Compliance & Safety Certifications

• Global Safety Standard: IEC 61800-5-1 (adjustable speed power drive systems safety)
• EMC Compliance: EN 61000-6-2 (industrial immunity), EN 61000-6-3 (industrial emission)
• Certifications: CE marked, UL 508C listed, CSA certified for North American power plant applications
• Pollution Degree: Class 3 (industrial cabinet environment)

9. Core THYRIPOL Excitation-Specific Functional Features

1. Built-in power system stabilizer (PSS) algorithm to damp generator rotor oscillations for grid stability
2. Automatic voltage regulator (AVR) + manual field current dual control mode with bumpless transfer
3. Full fault recording buffer: Stores 200+ fault event logs with timestamp, pre-fault waveform capture for excitation loop diagnostics
4. DCC (Drive Control Chart) free graphical programming: Custom excitation interlock logic editable via STARTER software
5. Parallel excitation stack master-slave synchronization control (support multi-thyristor power cabinet parallel operation for large generator sets)
6. SIL 2 capable safety trip circuit architecture for critical power station protection interlocks

10. Compatible Matching Power Stage Hardware

• Medium power: 6RA8075 / 6RA8078 / 6RA8081 chassis power units (210 A – 400 A DC field output)
• High power: Custom base drive panels (1500 A – 2800 A DC field current for large turbo/hydro generators)西门子工业支持

11. Software Engineering Tools

• Official Commissioning Software: STARTER (V5.x+), DriveMonitor, SINAMICS DCC Editor
• PLC Integration: Seamless data exchange with SIMATIC S7-1500/S7-400 via PROFIBUS/PROFINET
• Parameter Backup: Full parameter set export/import via memory card or PC software for spare unit rapid commissioning