1. Core Electrical Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Product Model | 6RA7082-6FV62-0-Z G94+K01+K11 | – | SIMOREG DC Master, 4‑quadrant converter |
| AC Input (3‑phase) | 460 | V AC | 3‑phase, 50/60 Hz |
| AC Input Current (Max) | 374 | A | At rated load |
| DC Output Voltage (Rated) | 480 (US‑rating: 500) | V DC | Controllable rectifier D480/450 |
| DC Output Current (Rated) | 450 (US‑rating: 255) | A | IEC Class I continuous; US (NEMA) with 150% overload for 60s @ 45°C ambient |
| Field Excitation Input | 460 | V AC | Field rectifier input |
| Field Output Voltage | 375 | V DC | Maximum field voltage |
| Field Output Current | 25 | A | Maximum field current |
| Power Rating (Approx.) | 225 | kW | Calculated by DC output voltage × current (480V × 450A) |
| Circuit Topology | B6 (6‑pulse bridge) | – | A (B6) C configuration |
| Cooling Method | Air‑cooled (forced) | – | Forced air cooling |
| Net Weight | 37.6 | kg | – |
2. Option Codes & Functional Descriptions
| Option Code | English Description | Key Features |
|---|---|---|
| G94 | PROFIBUS DP Communication Module | RS485 interface, max 12 Mbps baud rate, supports DP V0/V1 protocols for PLC/DCS integration |
| K01 | Basic Operator Panel (PMU) | Local control, parameterization, fault diagnosis, 7‑segment display, 6‑key keypad |
| K11 | Analog I/O Expansion Module | 4 additional analog inputs (0/4–20 mA, ±10 V) + 2 analog outputs (0/4–20 mA, ±10 V) |
| Z | Base Drive Configuration | Standard power section, no additional accessories |
3. Performance & Control Parameters
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Control Architecture | Microprocessor‑based PI control | – | Current/voltage/speed closed‑loop control |
| Speed Regulation Accuracy | ≤0.01% | – | With encoder feedback (resolver/encoder) |
| Speed Control Range | 1:1000 | – | With encoder; 1:100 without feedback |
| Overload Capacity | 150% of rated DC current for 60s | – | US (NEMA) rating, 45°C ambient; 10‑minute minimum interval between overloads |
| Dynamic Response Time | ≤10 | ms | Current loop step response |
| Power Factor (PF) | 0.9 | – | At rated load and 6‑pulse operation |
| Power Loss (Approx.) | 2.5 | kW | At rated DC current |
4. Protection & Safety Features
| Protection Function | Threshold/Action | Notes |
|---|---|---|
| Overcurrent Protection | 1.5× rated current (60s) | Instantaneous trip at 2.5× rated current |
| Overvoltage Protection | 1.3× rated DC output voltage | Active clamping + crowbar circuit |
| Undervoltage Protection | 85% of nominal AC input | Shuts down to prevent damage |
| Overheating Protection | 85°C (heatsink temp) | Fan speed control + alarm/trip |
| Motor Stall Protection | Adjustable time/current threshold | Prevents motor overheating during lockup |
| Field Loss Protection | Field current <5% of setpoint | Instantaneous shutdown to avoid armature overcurrent |
| Short‑circuit Protection | Internal fast‑acting fuses | Coordinated with power section design |
| EMC Compliance | EN 61800‑3, Category C2 | Suitable for industrial environments |
5. Mechanical & Environmental Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Cooling Method | Forced air cooling | – | Integrated fan with speed monitoring |
| Net Weight | 37.6 | kg | Base drive without packaging |
| Dimensions (W×H×D) | 600×1200×400 | mm | Typical for standard air‑cooled unit |
| Ambient Temperature | 0–45 | °C | Operating; derate above 45°C |
| Storage/Transport Temperature | −25 to +70 | °C | – |
| Installation Altitude | ≤1000 | 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 |
6. Interface & Communication
| Interface | Specification | Notes |
|---|---|---|
| PROFIBUS DP (G94) | RS485, 9.6 kbps–12 Mbps | Supports DP V0/V1; up to 126 nodes |
| PMU (K01) | Local keypad/display | Parameter setting, fault diagnostics, manual control |
| Analog I/O (K11) | 4 AI (0/4–20 mA, ±10 V), 2 AO (0/4–20 mA, ±10 V) | Isolated, 12‑bit resolution |
| Digital I/O | 6 DI, 4 DO (relay) | Standard on base unit; expandable via option modules |
| Encoder Input | TTL/HTL, 5 V/24 V | Supports incremental encoder/resolver |
7. Key Definitions & Compliance
- IEC Class I vs US (NEMA) Rating: IEC Class I = 450 A continuous (no overload); US (NEMA) = 255 A continuous with 150% overload for 60 s at 45°C ambient.
- Options Compatibility: G94 (PROFIBUS), K01 (PMU), and K11 (analog I/O) are factory‑installed for enhanced communication and control flexibility.
- Compliance: RoHS directive compliant; meets IEC 61800‑3, NEMA ICS 1.1, and UL 508C standards.
- Typical Applications: Rolling mills, presses, cranes, elevators, test stands, and other heavy‑duty industrial DC motor drives requiring precise speed/torque control.
8. Supplementary Notes
- Overload Limitation: US (NEMA) overload (150% for 60 s) must be applied no sooner than every 10 minutes to prevent thermal damage.
- Field Excitation: Field rectifier provides max 375 V DC/25 A for DC motor field winding, ensuring reliable motor magnetization.
- Documentation: Refer to Siemens 6RA70 Series Base Drive Instruction Manual (Document No. 6RA7000‑0AA00) for complete parameterization and troubleshooting.
