Panasonic MDDLT55SF Servo Driver 1.5kW 40A 200V AC MINAS A6 SF Series with Full-Closed Control and STO Safety

The Panasonic MDDLT55SF is a high-performance multifunction AC servo driver from the MINAS A6 SF series, designed for demanding industrial automation applications requiring advanced motion control capabilities. This 1.5kW driver delivers exceptional precision, ultra-fast response, and versatile control options, making it an ideal choice for CNC machinery, robotics, packaging equipment, semiconductor manufacturing, and high-precision positioning systems.

As part of Panasonic's MINAS A6 family, the MDDLT55SF features a 3.2 kHz frequency response for superior dynamic performance, supports 23-bit absolute encoder feedback (8,388,608 pulses/revolution), and offers seven switchable control modes including full-closed control with external scale feedback. The driver includes integrated STO (Safe Torque Off) safety functionality and supports Modbus RTU communication via RS-485 for multi-axis systems.

Product Status: Active (In Production) - Available for new designs and ongoing production.

• Seven Control Modes in One: Switchable among Position, Speed, Torque, Position/Speed, Position/Torque, Speed/Torque, and Full-Closed control modes
• Full-Closed Control Support: Accepts external scale feedback (A/B phase differential input) for high-precision positioning applications; supports serial communication scales from Fagor, Magnescale, Mitutoyo, NIDEC INSTRUMENTS, and Renishaw
• Ultra-Fast Response: 3.2 kHz frequency response for rapid acceleration/deceleration and superior throughput
• High-Resolution Feedback: 23-bit (8,388,608 resolution) absolute encoder support for exceptional positioning precision

• Multiple Communication Interfaces: USB (for PC configuration/monitoring), RS-232 (1:1), RS-485 (1:n up to 31 axes, Modbus-RTU)
• Versatile Pulse I/O:
  • Pulse input: 2 channels (photo-coupler or line receiver); max command pulse frequency: 500 kpps (optocoupler) or 8 Mpps (line receiver ×4 multiplication)
  • Pulse output: 4 channels (3 line driver, 1 open collector) for encoder or external feedback pulse output

• STO Safety Function: Integrated Safe Torque Off with dedicated connector for functional safety compliance
• Built-in Regeneration: Built-in regenerative resistor for D-Frame; external resistor also enabled
• Built-in Dynamic Brake: Provides motor deceleration during emergency stops or power loss
• Protective Functions: Over-voltage, under-voltage, over-speed, over-load, over-heat, over-current, encoder error, excess position deviation, and EEPROM error detection

• Front Panel: 5 keys with 6-digit LED display for local parameter adjustment and status monitoring
• Auto-Tuning: Real-time load inertia identification and automatic gain setting based on rigidity configuration
• Advanced Filtering: 5 notch filters (manual/automatic) and 3 vibration suppression filters for mechanical resonance control
• PANATERM Software: Free PC-based configuration software via USB connection

• RoHS Compliant: Meets EU RoHS Directive 2011/65/EU and 2015/863/EU

The MDDLT55SF supports switching among the following 7 control modes via parameter selection:

The MDDLT55SF (D-Frame) is compatible with MINAS A6 series servo motors. For optimal performance, pair with Panasonic 1.5kW motors:

The Panasonic MDDLT55SF multifunction servo driver is ideal for:

• Mounting: Chassis mount - D-Frame (85mm width) for efficient panel integration
• Cooling: Natural convection cooling - ensure adequate ventilation clearance as specified in instruction manual
• Environment: Operates in 0°C to 55°C temperature range; altitude below 1000m

• Main Circuit Power: Single or 3-phase 200-240V AC - verify phase configuration before connection
• Control Circuit Power: Single-phase 200-240V AC - separate from main circuit
• Motor Connection: Connect to compatible MINAS A6 series servo motor
• Encoder Feedback: 7-wire serial connection for 23-bit absolute encoder
• External Scale: For full-closed control, connect A/B phase differential signals or serial communication scale
• STO Connection: Use dedicated connector for functional safety wiring
• Grounding: Proper grounding required for safety and noise immunity

• USB Connection: Connect PC to driver via USB for parameter setup using PANATERM software (free download)
• Control Mode Selection: Select one of 7 control modes via parameter configuration
• I/O Configuration: Program 10 inputs and 6 outputs for custom control integration
• Auto-Tuning: Enable real-time auto-tuning for optimal gain settings under varying load conditions
• Test Operation: Perform JOG operation before full system integration

Available downloads from Panasonic: