General Information

• Manufacturer: Siemens AG
• Product Series: SIMOREG (Siemens Regulated DC Drives)
• Product Type: DC Motor Speed Controller (Analog Control)
• Status: Discontinued (Obsolete, legacy product for older industrial systems)
• Target Applications: Speed control of DC motors in machinery such as conveyors, pumps, fans, and small machine tools.
• Target Motor Type: Shunt-wound DC motors, separately excited DC motors.

Electrical Specifications

1. Supply Voltage:
   • AC Input: 380 - 480 V, 3-phase, 50/60 Hz (typical for industrial 3-phase power grids).
2. Motor Output:
   • DC Output Voltage: Up to 440 V DC (rated output, dependent on input voltage and motor rating).
   • Rated Output Current: 60 A (continuous duty rating for motor load).
   • Overload Capacity: Typically 150% of rated current for 1 minute (to handle startup or transient loads).
3. Control Signal Input:
   • Analog Control: 0 - 10 V DC or 4 - 20 mA DC (standard industrial analog control signals for speed reference).
   • Motor Field Supply: Integrated field current regulator, suitable for standard DC motor field windings (field voltage typically matches motor specifications).

Control & Functional Features

1. Speed Regulation:
   • Analog speed control with proportional-integral (PI) regulation for stable speed maintenance.
   • Speed adjustment range: Typically 1:10 (ratio of maximum to minimum controllable speed).
2. Protection Functions:
   • Overcurrent Protection: Triggers when output current exceeds overload capacity to prevent damage to the controller and motor.
   • Overvoltage Protection: Protects against voltage spikes on the DC output side.
   • Undervoltage Protection: Shuts down the controller if input AC voltage drops below a safe threshold.
   • Motor Overheating Protection: Compatible with external PTC thermistors (connected to the controller’s protection input) to monitor motor temperature.
3. Operational Modes:
   • Speed Control Mode: Primary mode for regulating motor speed via analog reference signal.
   • Current Limiting Mode: Automatically limits output current during transient loads to avoid overload.

Physical & Environmental Specifications

• Dimensions: Approx. 140 mm (Width) × 250 mm (Height) × 300 mm (Depth) (estimated based on similar SIMOREG models, for cabinet mounting).
• Weight: Approximately 5 - 7 kg (varies slightly by mounting accessories).
• Mounting: Panel-mounted or cabinet-mounted (designed for integration into industrial control cabinets).
• Protection Class: IP20 (dust-protected, suitable for indoor industrial environments with proper cabinet enclosure).
• Operating Temperature Range: 0°C to +40°C (for continuous operation; derating required at higher temperatures).
• Storage Temperature Range: -20°C to +60°C.
• Relative Humidity: 5% - 95% (non-condensing).

Application Notes

• System Integration: Designed for use with analog control systems (common in legacy industrial setups before digital drive controllers became prevalent).
• Replacement Considerations: As a discontinued product, it is often replaced by Siemens digital DC drive controllers such as the SIMOREG DC-Master series (e.g., 6RA80 models) for modernized systems. These digital replacements offer enhanced functionality, including digital communication (PROFIBUS/PROFINET), better energy efficiency, and advanced diagnostics.
• Maintenance: Legacy units rely on replaceable fuses and discrete electronic components; spare parts are limited and typically sourced from specialized industrial automation resellers.

Availability