MDS-C1 vs. MDS-B: Decoding the Differences in Mitsubishi’s Servo Drive Lineup

April 27, 2025

Choosing the right servo drive is critical for optimizing industrial automation systems. Mitsubishi’s MDS-C1 and MDS-B series offer distinct capabilities aimed at different application needs. This guide breaks down their key differences to help you select the ideal drive for your operations.

Voltage Range

MDS-C1 Series: Supports a wider range (200–400V), allowing use in high-performance, high-voltage environments.
MDS-B Series: Designed primarily for 200V operations, suitable for simpler, lower-voltage applications.

Example Models:

MDS-C1-SVJ, MDS-C1-SPV, MDS-C1-SPH (400V)
MDS-C1-V1-45 (200V)
MDS-B-SP, MDS-B-SVJ2, MDS-B-V1-20, MDS-B-VR (200V)

Power Capacity and Speed

MDS-C1: Higher capacity; speeds up to 3000 RPM and power outputs up to 11 kW (ideal for demanding CNC and automation).
MDS-B: Limited to lower capacities; speeds up to 2000 RPM and lower power outputs around 2-4.5 kW.

Communication Protocols and Connectivity

MDS-C1: Advanced connectivity with CC-Link IE Field, EtherCAT, and Modbus TCP/IP.
MDS-B: Basic RS-232/485 and MELSECNET connectivity.

This enables the MDS-C1 series to integrate seamlessly with modern, complex industrial networks.

Safety Features

MDS-C1: Built-in advanced safety (Safe Torque Off (STO), Safe Stop 1 (SS1)).
MDS-B: Basic protections like overheat and overcurrent detection without advanced safety certifications.

Diagnostics and Predictive Maintenance

MDS-C1: Real-time monitoring of voltage, current, temperature; advanced fault diagnostics; predictive maintenance alerts.
MDS-B: Basic fault indications; limited predictive maintenance capabilities.

Compact Design and Integration

MDS-C1: Modern compact designs optimized for high-density and space-constrained systems.
MDS-B: Bulkier units; less suited for installations where space is at a premium.

Output Current

MDS-C1: Supports higher currents — up to 60A for heavy-duty operations.
MDS-B: Limited to around 15-20A, suitable for lower-demand applications.

Application Suitability

MDS-C1: Best for high-end CNC, robotics, high-precision manufacturing, automotive, and aerospace.
MDS-B: Suitable for simpler applications like textiles, woodworking, and basic CNC operations.

Conclusion

The MDS-C1 series clearly offers superior performance for industries demanding advanced automation, high power, and safety. Meanwhile, the MDS-B series remains a practical option for basic, lower-power applications.

Looking to purchase an MDS-C1 or MDS-B drive? Contact PLG Automation today:
Email: sales@plgautomation.com
Phone: 800-906-9271