SEW MDX61B0750-503-4-0T/DEH11B/DFE24B

SEW MDX61B0750-503-4-0T/DEH11B/DFE24B

Product Introduction:
The MDX61B0750-503-4-0T/DEH11B/DFE24B is a high-performance frequency inverter from SEW-EURODRIVE’s MOVIDRIVE MDX61B series, configured with two option cards. The “MDX61B” identifies the MOVIDRIVE inverter platform. The “0750” denotes a recommended motor power of 75 kW. The “503” indicates a three-phase AC 380–500V supply voltage configuration. The “4” specifies four-quadrant operation capability. The “0T” suffix denotes the technology/application version. The “/DEH11B” option card is an encoder interface module responsible for processing motor encoder signals and providing speed/position feedback to the inverter’s control algorithm. The “/DFE24B” option card is a PROFINET IO fieldbus interface module that enables high-speed real-time communication between the inverter and the plant automation network, allowing centralized monitoring, parameterization, and control from a PLC or SCADA system.

Request Quote
Category:

Description

SEW MDX61B0750-503-4-0T/DEH11B/DFE24B

Technical Specifications:

  • Brand: SEW-EURODRIVE
  • Series: MOVIDRIVE MDX61B
  • Recommended Motor Power: 75 kW
  • Supply Voltage: Three-phase AC 380–500V, 50/60 Hz
  • Operating Quadrants: 4Q (regenerative capable)
  • Control Modes: VFC, CFC, SERVO
  • Option Card 1: DEH11B — Encoder interface card
  • Option Card 2: DFE24B — PROFINET IO fieldbus interface card
  • Protection Class: IP20
  • Certifications: CE, UL/cUL

Functional Features:

  • DEH11B Encoder Interface Card: Processes incremental and absolute encoder signals from the motor, providing precise rotor position and speed feedback for closed-loop vector control (CFC/SERVO modes)
  • DFE24B PROFINET IO Interface: Enables real-time industrial Ethernet communication with PROFINET-compatible PLCs, supporting cyclic data exchange, acyclic parameter access, diagnostics, and firmware updates over the plant network
  • Multi-Mode Control: Supports VFC (open-loop), CFC (closed-loop with encoder), and SERVO (high-dynamic positioning) operating modes
  • Integrated Safety Functions: Safe Torque Off (STO) compliant with SIL3/PLe
  • IPOS+ Motion Controller: Integrated programmable positioning system for autonomous motion sequences
  • Comprehensive Protection Suite: Overcurrent, overvoltage, undervoltage, overheating, ground fault, motor stall protection
  • High Overload Capacity: 150% rated current for 60 seconds
  • Wide Output Frequency Range: 0–500 Hz

Application Scenarios:

  • Industrial automation systems with PROFINET network integration
  • Material conveying systems (conveyors, transfer lines)
  • Robot and automated machinery
  • Packaging and processing equipment
  • Manufacturing and assembly lines
  • Warehouse automation and logistics systems
  • Pump and ventilation systems with networked control
  • Winding and unwinding applications

Performance Parameters:

  • Rated Power: 75 kW
  • Output Frequency Range: 0–500 Hz
  • Speed Control Accuracy: Better than 0.5%
  • Dynamic Response Time: Tens of milliseconds
  • Overload Capacity: 150% rated current for 60 seconds
  • PWM Switching Frequency: Up to 16 kHz (adjustable)
  • Speed Range: -5000 to +5000 rpm
  • Speed Resolution: 0.2 rpm
  • Voltage Tolerance: ±10% mains voltage fluctuation

Material Composition:

  • Industrial-grade IGBT power modules
  • Conformal-coated control circuit boards
  • Aluminum heat sink with forced air cooling
  • Integrated EMC/RFI filter components
  • Steel housing with powder-coated finish
  • DEH11B and DFE24B option cards with surface-mount electronics

Structural Features:

  • Cabinet-mount housing with modular option card slots
  • Power supply input terminals (L1, L2, L3)
  • Motor output terminals (U, V, W)
  • Braking resistor terminals for dynamic braking
  • DC bus connection terminals
  • DEH11B encoder interface card slot with Sub-D connector for encoder cable
  • DFE24B PROFINET IO card slot with RJ45 Ethernet connector
  • Control signal terminal strip
  • LED status and diagnostic indicators
  • DBG keypad interface slot
  • Shield clamps for power cable grounding

Working Principle:
The inverter converts three-phase AC input power through a rectifier stage into DC bus voltage, which is smoothed by capacitors. The IGBT inverter stage then synthesizes variable-frequency, variable-voltage PWM output to control the connected motor. The DEH11B card reads encoder pulses from the motor and feeds position/speed data to the control algorithm for closed-loop vector control. The DFE24B card establishes a PROFINET IO connection to the plant network, enabling the PLC to send speed/torque setpoints, read status data, and perform remote diagnostics in real time.

Installation Requirements:

  • Mount vertically inside a control cabinet with adequate ventilation
  • Maintain minimum clearance above and below for cooling airflow
  • Use shielded power and motor cables with 360° shield grounding
  • Connect the motor encoder cable to the card’s encoder interface
  • Connect the PROFINET Ethernet cable (CAT5e or higher) to the DFE24B card’s RJ45 port
  • Assign a unique PROFINET device name and IP address during commissioning
  • Connect braking resistor to dedicated braking terminals for 4Q operation
  • Ambient temperature must remain within the specified operating range

Usage Precautions:

  • Perform motor initialization and auto-tuning after connecting a new motor
  • Use MOVITOOLS MotionStudio software for parameter configuration and commissioning
  • Verify PROFINET network configuration (device name, IP address, station number) before enabling communication
  • Confirm the encoder card is correctly configured for the connected encoder type (incremental/absolute, resolution)
  • Never connect or disconnect power or motor cables while the inverter is energized
  • Monitor fault codes via the LED display or MOVITOOLS software
  • Clean heat sink fins regularly to prevent overheating
  • Wait at least 5 minutes after disconnecting main power before performing maintenance to allow capacitor discharge
  • Verify supply voltage stability within ±10% tolerance before operation

Related products