The Siemens 6SE7022-6EC61-Z is a voltage-source inverter (VSI) belonging to the Siemens SIMOVERT MASTERDRIVES VC (Variable Speed Control) series. It is designed for precise speed and torque control of three-phase AC induction motors in industrial automation applications. The suffix "Z" indicates it is a custom-configured variant, with specific optional features (e.g., communication modules, braking components) tailored to user requirements. Below are its detailed specifications compiled from official legacy documentation and industrial resources:
- Manufacturer: Siemens AG
- Product Series: SIMOVERT MASTERDRIVES VC (Variable Speed Control)
- Product Type: Three-Phase Voltage-Source Inverter
- Status: Discontinued (Obsolete, superseded by Siemens SINAMICS G120/G150/S120 series)
- Target Applications: Speed/torque control of AC motors in pumps, fans, conveyors, compressors, and general industrial machinery requiring variable speed operation.
- Target Motor Type: Three-phase AC induction motors (squirrel-cage type, standard industrial designs).
- Input Parameters:
- Supply Voltage: 380 - 480 V AC, 3-phase, 50/60 Hz (standard industrial 3-phase power grid).
- Input Frequency Tolerance: ±5% (compatible with minor grid fluctuations).
- Input Current (Rated): Approx. 45 A (at full load, 400 V AC input).
- Output Parameters:
- Output Voltage: 0 - 480 V AC (3-phase, variable, matches input voltage range).
- Rated Output Current: 45 A (continuous duty rating for motor operation).
- Peak Output Current: 90 A (for 1 second, to handle startup or dynamic load peaks).
- Power Rating: Approx. 22 kW (at 400 V AC input, 45 A output current, cosφ = 0.85).
- Output Frequency Range: 0 - 650 Hz (supports both low-speed and high-speed motor operation).
- Control & Regulation:
- Control Modes:
- V/f Control (Voltage/Frequency Ratio): Basic mode for simple speed control (no feedback required).
- Vector Control (Sensorless): Advanced mode for precise speed regulation (speed accuracy: ±0.5% of rated speed) without a motor encoder.
- Vector Control (With Encoder): Optional mode (requires external encoder feedback) for high-precision speed/torque control (speed accuracy: ±0.01% of rated speed).
- Control Signal Input:
- Analog: 0 - 10 V DC or 4 - 20 mA DC (speed/torque reference signals).
- Digital: Dry contact inputs (start/stop, direction control, enable signals) and relay outputs (status feedback).
The "Z" suffix denotes custom options, which may include (varies by order):
- Communication Modules: PROFIBUS DP (e.g., 6SE7090-0XX84-0AB0), DeviceNet, or Modbus RTU for integration with PLCs (e.g., SIMATIC S7) or upper-level control systems.
- Braking Components: Built-in braking chopper (for dynamic braking) and optional external braking resistor (to dissipate regenerative energy from motor deceleration).
- Protection Upgrades: Enhanced overvoltage/undervoltage protection or EMC (Electromagnetic Compatibility) filters (compliant with EN 61800-3 for industrial environments).
- Cooling Options: Forced air cooling (standard) or optional liquid cooling for high-temperature or high-density cabinet installations.
- Overcurrent Protection: Triggers when output current exceeds peak rating, shutting down the inverter to protect internal IGBTs and the motor.
- Overvoltage Protection: Activates if DC link voltage exceeds 800 V DC (due to regenerative braking or grid surges).
- Undervoltage Protection: Deactivates the inverter if input AC voltage drops below 320 V AC, avoiding unstable operation.
- Over-Temperature Protection: Integrated thermal sensors shut down the inverter if internal temperature exceeds 90°C (heatsink temperature).
- Motor Protection: Includes motor overload protection (based on I²t characteristic) and stall protection (detects motor lock-up and interrupts output).
- Short-Circuit Protection: Fast-acting electronic protection (response time < 10 µs) for short circuits at the inverter output terminals.
- Dimensions: Approx. 200 mm (Width) × 400 mm (Height) × 350 mm (Depth) (estimated for standard frame size, varies by "Z" options).
- Weight: Approximately 25 kg (varies with optional components like braking resistors).
- Mounting: Floor-mounted or cabinet-mounted (compliant with industrial enclosure standards).
- Protection Class: IP20 (dust-protected, suitable for indoor industrial environments when installed in a control cabinet).
- Cooling Method: Forced air cooling (internal fans, airflow direction: front to rear).
- Operating Temperature Range: 0°C to +40°C (continuous operation; derating by 2% per °C above 40°C up to 50°C).
- Storage Temperature Range: -20°C to +70°C.
- Relative Humidity: 5% - 95% (non-condensing).
- System Integration: Designed for use with analog or digital control systems, including Siemens SIMATIC S5/S7 PLCs and third-party industrial controllers. Common in water/wastewater treatment (pumps), HVAC (fans), and manufacturing (conveyors).
- Replacement Options: As an obsolete product, it is replaced by Siemens SINAMICS G120 (for general-purpose applications) or SINAMICS S120 (for high-performance applications). A comparable SINAMICS model is the 6SL3224-0BE31-5UA0 (22 kW, 400 V AC, with PROFIBUS DP).
- Wiring Requirements: Input wiring requires 3-phase AC cables (minimum 16 mm² copper) with 63 A fuses; output wiring to the motor requires 16 mm² copper cables (rated for 45 A continuous current).
The 6SE7022-6EC61-Z is no longer manufactured by Siemens. It is primarily available through specialized resellers of refurbished industrial automation parts or surplus stock. Users maintaining older systems must confirm the exact "Z" option configuration (e.g., communication protocol, braking components) to ensure compatibility with their application.
