Mil-Drive MCU-400 Military Motor Control Unit — Motor Drive, Power Distribution and Control in One Enclosure

Mil-Drive MCU-400 is a military motor control unit that powers, protects, drives and controls 3-phase 400 VAC induction motors from a single enclosure. It replaces an industrial variable frequency drive (VFD), a separate electrical panel, a PLC and the wiring between them with one outdoor-rated unit designed to MIL-STD-810H and MIL-STD-461F.

The unit combines a field-oriented control (FOC) vector drive, power distribution and protection, the mechanism's interlock and limit logic, a hand controller, RS-485 and an Ethernet web interface. It is designed and manufactured by TEDEG in Ankara; the photos show a pre-production unit.

The unit takes a 3-phase 400 VAC input and distributes power to the motor, heater and control circuits with overcurrent and short-circuit protection. Its integrated frequency drive runs the motor with FOC vector control in a closed loop with encoder feedback: 0–50.0 Hz output frequency, ±1500 rpm and 10 A rms continuous output current, which corresponds to induction motors up to 4 kW (400 V, 4-pole).

The mechanism's lock and limit switches connect directly to the unit. The control board monitors these inputs continuously and does not run the motor until all conditions for movement are met. The operator starts travel with a single touch; when the mechanism reaches its limit switch, the unit ramps the motor to a stop.

The unit is operated from the Mil-Drive HCU-400 military pendant control unit, the system control panel (RS-485) or the web interface over Ethernet, with command priority assigned automatically. All measurements, faults and settings are monitored and changed through the web interface; settings are stored in non-volatile memory.

Key specifications:

Pin assignments and the communication protocol are given in the interface control document (ICD); the connector layout can be adapted to the installation.

Environmental and EMC values are the design basis; electrical values are verified in the factory acceptance test.

• Antenna and sensor masts / platforms: raise and lower drive with interlock and limit chain
• Platform leveling and lifting mechanisms
• Winch, hatch and ramp drives
• Shelter and vehicle-mounted systems: 3-phase motor loads, one outdoor enclosure

Motor rated current, frequency, ramps and direction are set in software; the number of interlock/limit inputs and the travel sequence are adapted to the mechanism. The Mil-Drive HCU-400 pendant control unit and its cable (5 m standard) can be added to the order.

Ordering code example: MCU-400-E-H-C05-0 — Ethernet/web (-E), HCU-400 hand controller included (-H), 5 m controller cable (-C05), military green paint (-0). Add -F for forced-air cooling; paint codes 0 = Green 383, 1 = Tan 686A, 2 = Earth Yellow.

MCU-400 brings the drive, panel, PLC and wiring that are otherwise installed separately in the field into one sealed unit: installation, testing and maintenance run through one part, with one supplier responsible. For higher power and Safe Torque Off, the Mil-Drive-55 military induction motor drive belongs to the same family. All products are in the Frequency Converters, Motor Drives & Military UPS Systems category; use the quote form for a project-specific configuration.