The stiffness of the actuator depend on the model and hardware revision. X-Series Actuators prior to early 2019 The stiffness is approximately linear and ranges from about 70 Nm/rad to about 170 Nm/rad. Details are provided in the hardware documentation . This applies to hardware revision A9V/B9V/C9...

We have certified the X-Series and R-Series actuators for FCC part 15b testing as well as the CE Mark testing for EMC and ESD.

We do not currently have any UL certifications.

The actuators can run at ambient temperatures up to 50º C. The actuator will have decreased performance at these temperatures, but it will not overheat or shut down. Above this temperature the electronics may shut down due to temperature limits. The internal temperature of the electronics, along wit...

The housing of an X-Series or R-Series actuator can theoretically get to about 80 deg-C at near the motor if the module is stalled at full power for several minutes. In our testing here we have seen the housings of an X8 actuator get as high as 65º C.

You can command up to 1kHz, although for our typical applications we control the actuators at around 100Hz. In general with a controlled wired network, the command and feedback rates are limited by the OS you are running. From macOS / Linux you can get reliable communication up to 1 kHz. On Windows ...

There are number of sensors in the X-Series and R-Series actuators. This includes feedback related to motion control like output position, velocity, torque, IMU, motor winding temperatures, voltage, current. We also provide a large amount of additional feedback like hardware timestamps, the status L...

The actuators have a roll-off frequency of about 5-30Hz, depending on the model of the actuator, the gains that set on the actuator, and the details of the commanded motion. Bode plots of the actuators under different load conditions are available in the hardware documentation: http://docs.hebi.us/h...

The repeatability of a single module is effected by the module’s load, speed, gains, etc. Usually you can repeatably position to around 0.05 degrees. The actuator’s inherent backlash can be a factor when the output axis is unloaded, or when loads change direction. However, backlash has very little e...

The status LED is used to indicate a variety of states about how it is being controlled and its internal state.

Detailed information is provided at:
http://docs.hebi.us/core_concepts.html#led-status-codes

The R-Series actuators are rated for IP-67. This means they can run under 1m of water for up 30 min, and are entirely dust-proof. The X-Series actuators are meant primarily for indoor use. The primary dust/water ingress points are the ethernet and power connectors on the modules. Some customers have...