Product Description:

The T850T-012EL8N is a brushless AC servo motor manufactured by Sanyo Denki as part of the T SANMOTION Servo Motors series. It serves as a rotary actuator that converts regulated current from a servo drive into controlled torque and speed for positioning or velocity-regulated axes in automated machinery. Its compact dimensions and integrated feedback allow direct mounting on conveyors, pick-and-place heads, or material-handling jigs while maintaining the closed-loop performance required in industrial automation cells.

Under continuous duty, the motor draws a rated phase current of 7.6 A from a drive that supplies 80 V to its windings, converting that electrical energy into 500 W of mechanical output at a shaft speed of 2500 rpm. The electromagnetic coupling produces torque in proportion to current with a constant of 0.287 N·m/A, allowing motion controllers to predict load response precisely. A copper resistance of 0.56 Ω governs steady-state losses, while the 10 kΩ tacho load ensures that the analog speed signal is not heavily loaded. Tacho linearity remains within 1%, which keeps velocity feedback error small. A coefficient of 7 × 10⁻³ V per rpm scales the signal for drives that accept low-level inputs.

Dynamic behavior is influenced by an armature inductance of 1.1 mH and an electrical time constant of 1.9 ms, allowing phase current to rise quickly without excessive overshoot. The rotor and connected load accelerate according to a mechanical time constant of 4.1 ms. The housing has an outer diameter of 87.5 mm, making it suitable for compact machinery. Position feedback comes from a line-driver encoder that supplies differential signals at 1000 P/R when powered by +5 VDC ±10%. The encoder signals help the connected drive regulate shaft position and speed during rapid acceleration, deceleration, and steady operation.