Three-phase brake motor TFS

400 Vwith built-in electromagnetic brakewith DC brake

Overview
The TFS series motors are equipped with an electromagnetic parking brake with a D.C. coil and a fixed braking torque. The brake supply is connected to the motor terminal board via a rectifier so the brake releases automatically when the motor is powered. Brakes with separate supply can also be fitted for two-speed motors or inverter-fed applications. The compact brake design results in a motor length only slightly greater than standard TN three-phase motors.

Construction and compatibility
Three-phase stationary brake motors are available with B3, B5 and B14 flanges. All M.T. Motori Elettrici motors are manufactured in compliance with IEC international standards.

Typical brake supply
FS brakes are standard supplied with 103 V d.c. power supply for 230/400 V (50/60 Hz) electric motors.

Key features

• Brake type: D.C. coil
• Brake feeding: rectifier connected to motor terminal board (standard)
• Optional: separate brake feeding available (for two-speed or inverter applications)
• Compact brake design; overall motor length slightly longer than standard TN three-phase motors

Technical specifications

• IEC sizes = 63 ÷ 160
• Nominal power Pn = 0.09 ÷ 37 kW
• Polarity = 2, 4, 6, 8
• Energy efficiency = IE1
• Nominal torque Mn = 0.63 ÷ 109 Nm
• Rotation speed n = 640 ÷ 2935 rpm
• Available flanges: B3, B5, B14
• Standard brake supply: 103 V d.c. for 230/400 V motors