Product Overview: SIMOVERT MASTERDRIVES MC Compact Plus DC/AC Inverter (Motion Control), 7.5 kW / 17.5 A, for 3‑phase motors, high‑dynamic vector control, discontinued by Siemens (EOL 2020).
1. Basic Electrical Ratings (Core)
| Parameter | Value | Unit | Remarks |
|---|---|---|---|
| Model Number | 6SE7021‑8TP50 | – | Base unit (no options) |
| Nominal Output Power | 7.5 (10.1 HP) | kW | At 380–480 V AC, 50/60 Hz |
| Rated Output Current (Iₙ) | 17.5 | A | Continuous, 3‑phase |
| DC Link Input Voltage | 510 … 650 | V DC | From external rectifier (e.g., 6SE70 series) |
| Output Voltage | 0 … 380 / 0 … 480 | V AC | 3‑phase, matches DC link |
| Output Frequency | 0 … 400 | Hz | Adjustable, high‑speed capable |
| Rated DC Link Current (I_ZKn) | 20.8 | A | Continuous DC input |
| Short‑Time Peak Current (I_max) | 52.5 | A | 200% overload for 0.25 s |
| Overload Capacity | 150% for 60 s | – | Continuous operation: 100% |
| Power Loss (at 5 kHz) | 0.3 | kW | Typical |
| Switching Frequency | 8 / 16 | kHz | Selectable (default 8 kHz) |
2. Input / Supply Specifications
| Parameter | Value | Unit | Remarks |
|---|---|---|---|
| AC Supply (for rectifier) | 380 … 480 | V AC | 3‑phase, 50 / 60 Hz |
| Control Supply | 24 | V DC | Internal, for logic / I/O |
| DC Link Ripple | ≤ 5 | % | With standard rectifier |
3. Control & Performance
| Parameter | Value / Description | ||
|---|---|---|---|
| Control Modes | V/f (Volts/Hz), SLVC (Sensorless Vector), VC (Closed‑loop Vector with encoder) | ||
| Speed Regulation (Closed‑loop) | ±0.01 % of rated speed | ||
| Torque Response Time | < 5 | ms | |
| Zero‑Speed Torque | 100 | % | (SLVC / VC) |
| Encoder Support | Incremental (TTL / HTL), Resolver | ||
| Communication | PROFIBUS DP (standard), optional: DeviceNet, CANopen | ||
| I/O Interface | 6 DI / 4 DO, 2 AI / 2 AO (standard) |
4. Mechanical & Environmental
| Parameter | Value | Unit | |
|---|---|---|---|
| Dimensions (W × H × D) | 135 × 360 × 260 | mm | (5.3 × 14.2 × 10.2 in) |
| Weight | 8.9 (19.6) | kg (lb) | |
| Protection Class | IP20 | – | (for control cabinet mounting) |
| Ambient Temperature | 0 … +40 (max +60 with derating) | °C | |
| Relative Humidity | ≤ 80 | % | Non‑condensing |
| Altitude | ≤ 1000 | m | (derate above 1000 m) |
| Cooling | Natural convection (no fan) | – | |
| Acoustic Noise | ≤ 18 | dB(A) | |
| Max. Motor Cable Length | 50 … 140 (shielded) / 70 … 100 (unshielded) | m | @ 5–10 kHz |
