Dynamixel XH540-W270-T Servo Motor

Dynamixel XH540-W270-T servo motor: a powerful TTL version

With a 9.9 Nm starting torque and a 272.5:1 reduction ratio, the Dynamixel XH540-W270-T servo motor is making a name for itself as one of the most powerful actuators in its class. Similar to the XH540-W270-R model in terms of performance, this servo offers for its part a multidrop bus TTL interface.

Particularly well suited for building mobile robots meant to explore rough terrain, this Dynamixel servo also stands out for its numerous programming possibilities. You’ll benefit from 6 control modes, including in PWM mode, which will delight fans of radio-controlled vehicles. You can connect it directly to a PC using a U2D2 Dynamixel module or an Arduino microcontroller (or any compatible controller) thanks to the provided JST-Molex cable.

Dynamixel XH series servo motors: extreme manufacturing quality

The programmable servos in the Dynamixel XH range benefit from a high-quality design in many ways:

• The gold-plated JST connector ensures more reliable and stable communications than a Molex connector;
• The precious metal and engineering plastic casing delivers very satisfactory heat dissipation;
• 3 different arrangements are possible for the cable at the back of the case, and numerous assembly configurations are possible thanks to a wide range of compatible frames.

Technical specifications of the XH540-W270-T servo

• Cortex M3 microcontroller (72 MHz, 32 bits)
• Input voltage: 10 -14.8V (recommended: 12V)
• Performance characteristics
  • Voltage rating: 12V
  • Starting torque: 9.9 Nm
  • Starting current: 4.9A
  • No-load speed: 39 rpm
  • No-load current: 0.07A
  • Resolution: 0,0879° x 4,096
• Angle: 360°
• Reduction ratio: 272.5:1
• Position sensor: absolute contactless encoder (12 bits, 360°)
• Operating temperature: -5 to 80°C
• Coreless Maxon motor
• Baud rate: 9,600–4,500,000 bps
• PID control algorithm
• Gear type: straight spur
• Gear material: precious metal
• Case material: precious metal and engineering plastic
• Dimensions: 33.5 x 58.5 x 44 mm
• Weight: 165 g
• Control signal: digital packets
• Protocol: half-duplex asynchronous serial communication (8 bits, 1 stop, no parity)
• Connection: TTL multi-drop bus
• IDs: 0~252
• Feedback: position, velocity, current, realtime tick, trajectory, temperature, voltage, external port, etc.
• Protocol version: 1.0, 2.0 (default)
• Operating mode/angle:
  • Position control mode: endless turn
  • Velocity control mode: endless turn
  • Position control mode: 360°
  • Extended position control mode: +/- 256 revolutions
  • Current-based position control mode: +/- 256 revolutions
  • PWM control mode: endless turn
• Standby current: 40 mA

Resources for the Robotis Dynamixel XH540-W270-T servo

To make the most of all the possibilities offered by the Dynamixel XH540-W270-T servo motor, review these useful links:

• E-Manual
• Schematics
• Software
• Compatibility guide
• Selection guide
• Dynamixel SDK