Dynamixel-P PH42-020-S300-R Servo

Dynamixel-P H42P-020-S300-R: an RS-485 servo that’s both compact and powerful

Like with all the Dynamixel-P and Dynamixel-P actuators in the R series, the Dynamixel-P H42P-020-S300-R model is an all-in-one servo equipped with an RS-485 multidrop communication bus.

It offers 5 operational control modes including extended position control and PWM control, which proves very useful if you want to control the accelerations and decelerations of a mobile robot. Less powerful than 100 or 200 W servos, this actuator still offers excellent torque, precision and speed. You’ll benefit from a resolution equivalent to 607,500 pulses per revolution and a reduction ratio of more than 300:1. Being efficient does not compromise the servo’s compactness: at just over 300 g, it can be installed under various configurations on your robotised systems.

A worthy representative of the Dynamixel-P range

The new Dynamixel-P series is a major improvement on legacy Dynamixel servo motors, particularly in terms of reliability and resolution. All servos in this range allow for a high precision of movement, at a reduced response time. Heat and noise levels have also been improved.

The servos have been redesigned, notably with the addition of JST connectors. The enhanced control table, fully programmable, now support all X-series functions.

Technical specifications of the Dynamixel H42P-020-S300-R actuator

• Maxon BLDC motor
• Transmission rate: 9,600 bps~10.5 Mbps
• Operating modes:
• Torque control
• Velocity control mode
• Position control
• Extended position control
• PWM control (voltage control)
• Weight: 340 g
• Dimensions: 42 x 84 x 42 mm
• Resolution: 607,500 pulses per revolution
• Reduction ratio: 303.75: 1
• Backlash: <6 [arcmin], 0.1 [°]
• Radial load: 280 [N] (10 [mm] away from the horn)
• Axial load: 100 [N]
• No-load speed: 32.7 [rev/min]
• No-load current: 0.57 [A]
• Continuous speed: 29.2 [rev/min]
• Continuous torque: 5.1 [Nm]
• Continuous current: 1.5 [A]
• Output: 20 [W]
• Operating temperature: -5 °C ~ 55 °C
• Input voltage: 24 [V]
• Control signal: digital packet
• Protocol: RS485 Asynchronous Serial Communication (8 bits, 1 stop, no parity)
• Physical connection: RS-485 multidrop bus
• IDs: 253 (0 ~ 252)
• Standby current: 30 [mA]

Resources for the Dynamixel H42P-020-S300-R servo

Review the full characteristics of the Dynamixel-P H42P-020-S300-R servo in the resources below:

• Dynamixel-P H42P-020-S300-R e-Manual
• Data sheet
• Downloads (software, 3D)