Product Short Description
Product Overview
Sanyo Denki P30B series is a high-precision AC permanent magnet synchronous servo motor for automated equipment. The P30B04010DXS8FM is designed for positioning and feed axis driving of small and medium automated machinery. Equipped with a high-resolution multi-turn absolute encoder, homing is unnecessary after power-off. A built-in power-loss electromagnetic brake locks the output shaft when equipment stops or power cuts off, preventing load sliding. The whole machine reaches IP65 protection rating, adapting to workshops of machine tools, injection molding and electronic equipment with heavy dust and splashing cutting fluid. Matched with Sanyo Denki RS series servo drives, full closed-loop position, speed and torque control can be realized.
Description
Model Code Definition
- P30B: Standard medium-inertia servo motor series
- 040: 40mm mounting flange size
- 10: Rated power 100W
- DXS8: 23-bit multi-turn absolute encoder
- F: Equipped with electromagnetic brake
- M: Shaft oil seal and dust-proof sealing structure
Electrical Parameters
- Rated Power: 100W
- Rated Torque: 0.318N·m
- Peak Torque: 0.955N·m
- Rated Speed: 3000rpm
- Max Speed: 5000rpm
- Rated Current: 1.2A
- Input Voltage: 3-phase AC200V
- Encoder: 23-bit multi-turn absolute encoder with backup battery for power-off origin memory
- Brake Parameter: 24VDC power-loss electromagnetic brake, static locking torque 0.4N·m
Mechanical Dimensions
- Mounting Flange: 40×40mm
- Shaft Diameter: 8mm with flat key output
- Overall Length (with brake): 92mm
- Net Weight: 0.58kg
Environmental & Protection Parameters
- Protection Class: IP65 (shaft fluorine rubber oil seal, waterproof cable gland)
- Operating Temperature: 0℃ ~ 40℃
- Storage Temperature: -20℃ ~ 60℃
- Vibration Resistance: 10~55Hz, amplitude 0.15mm
- Humidity: 20% ~ 80% non-condensing
Functional Features
- 23-bit high-precision multi-turn absolute encoder eliminates mechanical homing after power-up, shortening production cycle for multi-axis linkage equipment; backup battery retains origin data for 3 to 5 years.
- Built-in 24VDC power-loss electromagnetic brake locks the output shaft instantly upon emergency stop, power cut or servo disable, avoiding load dropping for vertical axes and sliding modules.
- Medium-inertia rotor balances dynamic response and load stability with minimal startup/shutdown impact; repetitive positioning accuracy reaches ±0.001mm.
- Fully sealed construction with fluorine rubber shaft oil seal and waterproof brass cable glands, resisting cutting fluid splashes, plastic dust and workshop oil contamination.
- Low cogging torque design ensures smooth low-speed operation without jitter, ideal for precision dispensing, PCB mounting and miniature engraving equipment.
- Fully compatible with all Sanyo Denki RS servo drives, supporting multiple control modes including pulse position command, Modbus and EtherCAT fieldbus.
Material & Structural Composition
- Motor Housing: Die-cast aluminum alloy with hard anodized anti-corrosion and scratch-resistant coating, lightweight yet structurally rigid.
- Stator Core: Laminated high-permeability silicon steel sheets with Class F (155℃) high-temperature resistant enameled windings.
- Rotor: High-energy neodymium iron boron permanent magnets with high demagnetization resistance; quenched and tempered stainless steel output shaft with superior wear resistance.
- Brake Assembly: Dry friction brake pads, spring-pressure power-loss locking structure, electromagnetic coil releases brake upon 24VDC power supply.
- Encoder Cavity: Independent hermetically sealed chamber with epoxy encapsulated circuit board, isolating encoder chips from oil, water vapor and high temperature from power windings.
- Cable Gland: Brass waterproof fitting with elastic rubber sealing washer to prevent water penetration under cable bending.
Working Principle
The servo drive outputs three-phase sinusoidal alternating current into stator windings to generate a rotating magnetic field. Permanent magnets embedded in the rotor interact with the rotating magnetic field to drive synchronous rotation of the output shaft.
A rigidly coupled absolute encoder mounted on the shaft continuously collects rotor angle, rotational speed and multi-turn position data, feeding signals back to the servo drive to form a full closed-loop control circuit. The drive dynamically adjusts output current by comparing target position and actual encoder feedback, precisely regulating output torque, rotational speed and positioning.
When power cuts off or servo enable signal is disabled, internal brake springs compress friction pads to mechanically lock the output shaft. Applying 24VDC to the brake coil generates electromagnetic force to retract springs and release the shaft for free rotation.
Installation Requirements
- Mounting Method: Standard flange horizontal or vertical installation. Secure the flange with 4 M4 bolts tightened to 1.2N·m to prevent flange deformation and shaft eccentric wear.
- Coaxiality Tolerance: Coaxial deviation between motor output shaft and load lead screw/coupler must not exceed 0.03mm. Eccentric mounting will cause severe high-speed vibration and premature bearing failure.
- Cable Routing: Separate power cables and shielded encoder cables in dedicated metal trunking, maintaining a minimum 20cm clearance from high-power inverter and contactor power lines. Both ends of cable shielding must be reliably grounded.
- Brake Wiring: The electromagnetic brake requires an independent 24VDC power supply and must not share power with control circuits. Polarity must not be reversed during wiring.
- Heat Dissipation: Maintain a minimum 30mm ventilation gap around the motor housing. Never wrap or fully enclose the motor. Auxiliary cooling fans are recommended for continuous full-load operation.
- Grounding: Connect the motor housing ground terminal to the equipment’s protective earth bus bar to eliminate static electricity and electromagnetic interference affecting encoder signals.
Application Scenarios
- 3C Electronic Equipment: Automatic dispensers, PCB depanelers, miniature mounter feed axes
- Precision Automation Modules: Compact linear slides, rotary positioning stages, micro lifting mechanisms
- Packaging Equipment: Small label applicators, conveyor positioning axes
- Miniature CNC Machinery: Micro engravers, small grinder feed drives
- Laboratory Automation: Precision displacement platforms, sample transfer mechanisms
Operation & Maintenance Precautions
- Never apply radial or axial impact force to the motor output shaft. Hammering the shaft end will permanently damage the precision encoder grating and internal bearings.
- The built-in brake is exclusively for static shaft locking during shutdown. Frequent dynamic braking during operation will rapidly wear friction pads and cause locking failure.
- For environments with continuous cutting oil and water mist, inspect the shaft oil seal every 3 months. Replace aging or leaking oil seals promptly to prevent internal winding contamination.
- The encoder backup battery must be replaced every 4 years to avoid loss of origin position data after power failure.
- Prohibit prolonged motor stall operation; stall current will surge rapidly and burn stator windings.
- Avoid violent pulling of power and encoder cables during handling and installation. Internal wire breakage from tension leads to communication errors and uncontrolled motor operation.






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