SIEMENS 1FL6034-2AF21-1MB1 Product Description

Overview

SIEMENS 1FL6034-2AF21-1MB1 is a SIMOTICS S-1FL6 low-inertiaia permanent-magnet synchronous servo motor, designed for use with the SINAMICS V90 servo drive system. The motor is rated 0.40 kW continuous output at a rated speed of 3000 rpm, with a rated torque of 1.27 N·m and a holding torque of 1.27 N·m. It features a 30 mm shaft height, a single-turn 21-bit absolute encoder, feather key shaft end, Class N radial runout tolerance, holding brake, and IP65 protection degree with fitting oil seal. The 1FL6 motor family is used for compact positioning axes, feed mechanisms and general industrial servo motion control in packaging, assembly, conveying, machine tools and automation equipment.

Features

SIEMENS 1FL6034-2AF21-1MB1 operates as a low-inertia permanent-magnet synchronous servo motor for three-phase 230 V V90 drive applications. Rated power is 0.40 kW, equivalent to 0.54 hp; rated speed is 3000 rpm and maximum speed is 5000 rpm. Rated torque and static torque are each 1.27 N·m, while maximum torque is 3.82 N·m. Rated current is 2.6 A and maximum current is 7.8 A. The torque constant is 0.49 N·m/A, and motor moment of inertia is 0.381 kg·cm².

The encoder system is a single-turn absolute encoder with 21-bit resolution, providing position feedback for the V90 drive without requiring homing after power-on. The shaft extension uses a feather key, with Class N radial runout tolerance and Grade A vibration severity. Cooling is natural cooling, and thermal class is B at 130 degrees Celsius. The motor design conforms to Code I IM B5, with compatible IM V1 and IM V3 mounting arrangements. Connection type is cable outlet. The holding brake has a holding torque of 1.27 N·m, rated voltage 24 V DC plus or minus 10 percent, rated current 0.30 A, opening time 75 ms and closing time 10 ms. Net weight is 1.92 kg. The motor complies with CE and EAC standards.

Specs

Product series: Siemens SIMOTICS S-1FL6 servo motor Model: SIEMENS 1FL6034-2AF21-1MB1Compatible drive: Siemens SINAMICS V90 servo drive Motor type: Low-inertia permanent-magnet synchronous motorSupply voltage: Three-phase 230 V, V90 drive system Rated power: 0.40 kW, 0.54 hpRated speed: 3000 rpmMaximum speed: 5000 rpmRated torque: 1.27 N·mStatic torque: 1.27 N·mMaximum torque: 3.82 N·mRated current: 2.6 AMaximum current: 7.8 ATorque constant: 0.49 N·m/AMoment of inertia: 0.381 kg·cm²Encoder: Single-turn absolute encoder, 21 bitShaft height: 30 mmShaft end: Feather keyRadial runout tolerance: Class NVibration severity grade: Grade ACooling: Natural coolingThermal class: B, 130 degrees CelsiusProtection degree: IP65, with fitting oil seal Mounting: Code I IM B5, compatible IM V1 and IM V3Connection type: Cable outletHolding brake torque: 1.27 N·mBrake rated voltage: 24 V DC plus or minus 10 percent Brake rated current: 0.30 ABrake opening time: 75 msBrake closing time: 10 msNet weight: 1.92 kgAmbient operating temperature: 0 to 40 degrees CelsiusRelative humidity: Maximum 90 percent RH, no condensation at 30 degrees CelsiusStandards: CE, EACProduct status: Siemens SIMOTICS S-1FL6 V90 servo motor component

Principle

SIEMENS 1FL6034-2AF21-1MB1 works as a permanent-magnet synchronous servo motor controlled by the SINAMICS V90 drive. The V90 drive receives position, speed or torque commands from the host controller, performs vector current control, and outputs three-phase current to the motor stator windings. The stator rotating magnetic field acts on the permanent magnet rotor to produce controlled rotation and torque. The 21-bit single-turn absolute encoder feeds real-time rotor position and speed back to the drive, closing the position and speed control loop for accurate axis following and positioning.

The low-inertia rotor design supports high dynamic response and short settling time on compact motion axes. The holding brake is used to hold the axis stationary when the drive is de-energized or for vertical load holding; the brake opens when drive power and brake control permit, and closes according to the brake timing when power is removed or a stop command is issued. Natural cooling relies on ambient airflow around the motor housing, while the IP65 sealed housing and fitting oil seal protect the windings and encoder in industrial machine-frame or cabinet mounting. Matching the motor to the correct V90 drive rating, encoder cable, brake cable and shaft coupling is required for reliable replacement.

Applications

SIEMENS 1FL6034-2AF21-1MB1 is used in V90 servo axes requiring 0.40 kW class drive, compact size and absolute position feedback. It fits packaging machines, labeling and sealing axes, pick-and-place units, assembly automation, screw and belt actuators, conveyors, feed mechanisms, small gantry and robot axes, test and inspection equipment, dispensing stations, machine tools, printing and paper handling, textile and winding equipment, material handling, and general factory automation retrofits. In existing Siemens V90 installations originally equipped with this motor, the unit serves as a replacement servo motor spare, compatible with the original V90 drive, mounting flange, encoder cable, brake wiring and shaft coupling.