OMRON R7M‑A10030‑BS1 SmartStep 200W 100V AC Servo Motor

The OMRON R7M‑A10030‑BS1 is a compact AC servo motor from the SmartStep series, rated at 200 W (0.2 kW) with a nominal voltage of 100 V AC. It delivers a rated speed of 3000 min⁻¹ and a maximum speed of 4000 min⁻¹. This motor is designed for use with OMRON’s SmartStep servo drives (e.g., R7D‑BP series) and is ideal for light‑duty positioning, conveyor drives, and small indexing tables. The “BS1” suffix indicates a round shaft without a keyway, equipped with an incremental encoder (13‑bit, 2048 P/R quadruple).

Torque and Electrical Ratings

Rated torque: 0.64 Nm (0.64 N·m). Maximum torque (peak): 1.91 Nm. Rated current: 1.7 A RMS at 100 V. Maximum current: 5.1 A. Torque constant Kt: 0.38 Nm/A. Rotor inertia: 0.56 × 10⁻⁴ kg·m². This relatively low inertia allows fast acceleration and deceleration. Mechanical time constant is 1.1 ms, electrical time constant 4.2 ms. The motor efficiency at rated load is approximately 82%. Insulation class F (155 °C). Dielectric strength: 1500 V AC for 1 minute between windings and frame.

Encoder and Feedback

The integrated incremental encoder provides 2048 pulses per revolution (after quadruple multiplication, resolution = 8192 counts/rev). Differential line driver outputs (A, B, Z phases) ensure noise immunity for cable lengths up to 20 metres. The encoder runs at 5 V DC, supplied by the drive. Standard connector: 10‑pin (Hirose) for encoder, and 3‑pin power connector (for U, V, W, ground). Optional absolute encoder version is not present on this model; the R7M‑A10030‑BS1 requires homing on each power‑up.

Compatible Drives and Operation

The R7M‑A10030‑BS1 is intended to be driven by OMRON SmartStep drives such as R7D‑BP01H (single‑phase 100 V, 100 W) or R7D‑BP02H (200 W). The drive uses the motor encoder for position and speed feedback. With the drive’s auto‑tuning feature, the motor can be commissioned quickly. The combination achieves a positioning accuracy of ±0.02° when used with a 2048 P/R encoder and a drive with pulse train input. The motor can also be used in torque control mode for winding or tensioning applications.

Environmental Conditions

Ambient operating temperature: 0‑40 °C, storage: -20‑60 °C. Relative humidity: 20‑90% non‑condensing. Vibration resistance: 5 G (10‑500 Hz). Shock resistance: 10 G. The motor is CE marked and RoHS compliant. Acoustic noise at rated speed is below 65 dB(A). The motor does not require periodic maintenance except for bearing replacement after approx. 20,000 hours of operation.

Applications

Typical uses include small pick‑and‑place heads, conveyor belt drives in electronics assembly, medical syringe pumps, and office automation equipment. The 200 W power level is suited for loads requiring moderate torque at high speed, such as small rotary tables or lab stirrers.