PQM0A300EXXXST0 Sanyo Denki
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The Sanyo Denki PQM0A300EXXXST0 servo amplifier is part of the PQ Type M Servo Amplifiers series and has an amplifier capacity of 300 Amps. It features a built-in dynamic brake with a brake delay time of 12.0 milliseconds and operates with a main circuit input of 280 VDC and control power of 200 VAC. The amplifier is built with SPCC body material and is designed for a maximum altitude of 1000 meters.
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Product Description:
The PQM0A300EXXXST0 is a tray-type servo amplifier manufactured by Sanyo Denki for the PQ Type M Servo Amplifiers series. Intended for industrial automation, the unit conditions DC bus power and modulation commands so that compatible Sanyo Denki servo motors receive accurate current profiles during acceleration, steady-state motion, and controlled deceleration. Integrated braking circuitry and safety interlocks simplify cabinet design for high-inertia axes used on assembly lines, material-handling equipment, and process machinery. The tray-style housing is suitable for installation in control panels where the amplifier can be connected to the motor and supporting power circuits.
This model delivers a maximum phase output of 300 A, which establishes the current ceiling available to the motor windings during peak torque demand. The control electronics are energized by a separate 200 VAC supply, isolating logic functions from the power stage supplied by a 280 VDC main circuit input. A built-in dynamic brake short-circuits the motor terminals through internal resistors within 12.0 ms after a stop command. The brake can dissipate up to 16900 J of energy per event, eliminating the need for an external brake chopper. All motor, grounding, and P/Y conductors must have a cross-sectional area of at least 14.0 mm². The housing is made from black-chromate-coated SPCC steel, providing a rigid structure for panel installation and supporting the amplifier’s internal power and braking components.
For regenerative operation, the drive requires a minimum shunt resistance of 2.4 Ω to keep the DC bus voltage within its permitted range. Installation altitude is limited to 1000 m, and ambient humidity must not exceed 90% RH. Following these limits helps prevent arcing across the tray-type frame and preserves insulation integrity during operation. The chassis supports forced-air channels that direct heat away from the braking elements and power stage. Adequate airflow around the tray must be maintained so heat can leave the enclosure without accumulating near the internal resistors or connected conductors.
