PMM-BA-4804-1 Sanyo Denki
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The Sanyo Denki PMM-BA-4804-1 is a 2-phase bipolar high-speed driver from the PM Drivers series with a rated current of 6 A per phase and an input power of AC 100/115 V at 50/60 Hz. This unit features a normally open relay alarm output and supports a maximum input frequency of 100 kpulse per second. It has a mass of 4 kg and a factory step angle of 0.09 degrees per pulse.
Internal Product Review
The PMM-BA-4804-1 is a Sanyo Denki PM driver built as a 2-phase bipolar high-speed unit with a rated current of 6 A/phase. Fine positioning and responsive pulse handling stand out, supported by a 0.09°/pulse factory step angle and a 100 kpulse/s maximum input frequency. A normally open relay alarm output adds practical machine protection, making the driver a strong fit for precise motion control.
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Product Description:
The PMM-BA-4804-1 is a stepper motor driver produced by Sanyo Denki within the PM Drivers series. Designed for two-phase permanent-magnet motors, the unit translates pulse-train commands from a controller into phase currents that move a load in discrete increments. It is installed in industrial automation systems that require precise positioning, such as semiconductor stages, inspection tables, and pick-and-place heads. It accepts single-ended pulse and direction signals and provides alarm feedback to supervisory PLCs for system monitoring.
The module uses a high-speed two-phase bipolar control scheme that energizes each motor phase symmetrically to reduce vibration. The calibrated 0.09° per pulse step angle allows 4,000 pulses to rotate the motor shaft through one full revolution. The power section operates from an AC 100/115 V, +10%/-15%, 50/60 Hz supply and withstands inrush through a 330 Ω input resistance. Its maximum pulse frequency is 100 kilopulses per second, supporting high-speed indexing when the commanded pulse duty remains within the 50% limit. The drive supplies up to 6 A per phase, while its 8 A source-current limit protects the motor windings. A minimum insulation resistance of 10 MΩ separates the control circuits from the chassis. Four M4-0.7 mounting holes secure the enclosure to a grounded panel.
Protective functions are signaled by a normally open relay that changes state when the internal temperature reaches a minimum of 80 °C or when supply faults occur. Electrical isolation is supported by a dielectric strength of AC 1,000 V between the power and signal paths. The aluminum housing weighs 4 kg and can be fastened without standoffs because mounting screws may project up to 7 mm into the base. During operation, the driver withstands vibration of 4.9 m/s², and its clamping terminals maintain secure signal connections under continuous machine motion.
