PYRA1111001

The Sanyo Denki PYRA1111001 amplifier from the PY Super BL Servo Amplifiers series by Sanyo Denki delivers high-power, precision control in a compact form factor. It provides a rated output of 4500 W coupled with a rated torque of 21.5 N·m (219 kg·cm) to drive demanding loads with accuracy. The unit supports a rated revolution speed of 2000 rpm and a maximum revolution speed of 2500 rpm, enabling both high-speed indexing and steady-state positioning. Equipped with a torque constant of 1.05 N·m/Arms (10.7 kg·cm/Arms) and an induced voltage constant of 36.7 mV/min⁻¹ (36.7 V/krpm), this amplifier ensures efficient energy conversion and precise torque generation. With a lightweight inertia of 58.1×10⁻⁴ kg·m² (59.1 g·cm·s²) it minimizes system overshoot and simplifies tuning for fast start-stop cycles. The housing features a compact, rectangular design with multiple terminal connectors for seamless integration.

Performance characteristics of the PYRA1111001 include advanced electrical and mechanical dynamics to optimize motion control loops. The mechanical time constant of 0.68 ms and electrical time constant of 33 ms provide rapid response to command changes, while the phase armature resistance of 0.043 Ω contributes to stable current regulation. Continuous stall capacity is rated at 31.6 Arms with a continuous stall torque of 32.0 N·m (326 kg·cm), while peak demand is supported by an instantaneous maximum stall armature current of 79.7 Arms and instantaneous maximum stall torque of 70.0 N·m (714 kg·cm). A rated armature current of 24.1 Arms ensures sustained performance under heavy loads. The built-in regenerative resistor and regenerative processing circuit absorb excess energy during deceleration, and dynamic brake activation secures safe shutdown in power loss or alarm conditions. Switching between position, speed, and torque control modes is possible on the fly, utilizing pulse train or analog input interfaces, and compatibility with ABS-R II and ABS-E sensors enhances feedback precision.

Reliability and integration are hallmarks of the PYRA1111001 design. The amplifier incorporates inrush current limiting to prevent power-on surges and features internal auto-tuning for optimized PID loop parameters, reducing commissioning time. Separation of control power and main circuit power ensures that, in an emergency stop or alarm state, diagnostics and alarm outputs remain active while the main drive power is isolated. A dedicated holding brake excitation timing output safeguards the connected motor brake mechanism, enhancing safety in vertical or high-inertia applications. Compact dimensions and multiple I/O connectors facilitate system integration in industrial automation, robotics, and CNC machinery where precise, dynamic motion control and dependable operation are essential.