The Delta MS300 packs advanced motor control into a footprint up to 40% smaller than previous Delta VFD generations. Sensorless field-oriented control drives both induction and permanent magnet motors without encoders. Integrated Safe Torque Off (SIL2/PLd), a 2,000-step PLC, and a built-in brake chopper across all models reduce panel space, external component count, and wiring complexity.

What communication options are available?

Built-in RS-485 with Modbus RTU comes standard. One expansion slot accepts fieldbus cards for CANopen, PROFIBUS DP, DeviceNet, MODBUS TCP, EtherNet/IP, EtherCAT, or PROFINET — integrating into any major automation network without external gateways.

How does the STO function reduce system cost?

The integrated Safe Torque Off (SIL2/PLd) removes the need for external safety relays and contactors in many applications. Activating STO safely disables motor output while maintaining drive logic power — enabling rapid restart after safety events without a full system reboot.

Key Features

• Sensorless vector control for IM and PM motors
• Built-in brake chopper — all models
• Removable 5-digit LED keypad for remote mounting
• 4 independent motor parameter sets for fast changeover
• 33 kHz pulse I/O for high-speed applications
• PCB coating to IEC 60721-3-3 Class 3C2 for harsh environments
• Built-in EMC filter (Class A/C2) on 1-ph 230 V and 3-ph 460 V models