Description
SEW CFM71S‑BR‑TF‑AS1H‑SB60
Technical Specifications: Frame size 71S Permanent magnet synchronous motor Integrated spring‑applied holding brake TF thermal contact winding temperature monitoring AS1H absolute encoder SB60 standard flange, smooth shaft Rated voltage matched with 380V servo drive Insulation class F Protection class IP65 Ambient operating temperature -20℃ to +40℃ Net weight 6.8kg
Functional Features: High torque density compact design Low rotor inertia for fast acceleration and deceleration Built‑in spring holding brake for load retention when power off TF thermal contact triggers alarm upon winding overtemperature AS1H absolute encoder provides absolute position without homing after power cycle IP65 housing protection for direct machine installation Low torque ripple for smooth operation Standard flange and shaft for mechanical assembly
Application Scenarios: Packaging machine servo axis Robotic handling joints Printing register roller drive Textile machine servo spindle Automated slide positioning axis
Performance Parameters: High dynamic response Continuous torque and peak overload torque suitable for cyclic load Encoder high resolution position feedback Speed range from static to rated speed continuously adjustable
Material Composition: Cast aluminum alloy motor housing Neodymium iron boron permanent magnet rotor Copper winding with F‑class insulation Steel motor shaft High‑precision ball bearing Spring brake assembly Metal flange Sealing rubber gaskets
Structural Characteristics: Compact cylindrical motor body Front SB60 mounting flange Smooth solid output shaft Rear encoder housing and brake assembly Built‑in temperature sensing element embedded in stator winding Cable connector terminal box on motor side
Working Principle: Servo inverter supplies three‑phase sinusoidal current to stator winding. Alternating magnetic field interacts with permanent magnet on rotor to generate electromagnetic torque and drive motor rotation. AS1H absolute encoder continuously detects rotor absolute position and feeds signal back to servo inverter. Built‑in holding brake engages automatically when coil power cuts off to lock shaft and hold load. TF thermal contact detects stator winding temperature and sends temperature alarm signal when overheating occurs.
Installation Requirements: Mount motor flange rigidly to machine mechanical frame Ensure shaft alignment between motor and driven load to eliminate radial and axial offset Install in environment without continuous water spray, heavy dust or corrosive vapor Motor cable and encoder cable use SEW specified shielded cables Cable connectors fastened tightly
Precautions for Use: Do not apply heavy impact to motor shaft or encoder housing during handling Check brake release function before commissioning Do not exceed rated peak torque continuously Keep sealing gaskets intact to maintain IP65 protection Do not disassemble encoder or brake assembly without professional maintenance
