This can be normal under heavy loads and extended use (especially for the Tilt axis) but can be corrected by the user. Please have a look in our NT Head user manual in our support section where you find instructions on how to recalibrate your units.
Always handle the NT Head with care. It is built sturdy, however, when you have additional rails connected to it, it is very easy to put a lot of stress to the internal gears when you pull or push at the end of the rails.
Never try to rotate the axes by hand. This will damage the internal worm-gears. Always use the knurl screws at the side of the unit which are connected directly to the stepper motor when you need to rotate the axes.
You can try setting a higher motor current for the tilt axis. You can go up to 1.2A under the Motor Settings section of the PINE Motion App.
Also, make sure to have your camera mounted to the Tilt axis so it is balanced and the weight on either side of the axis is roughly the same. Especially when using a heavy lens, a balanced setup is crucial and important. Otherwise you can damage the motor units.
In same cases, it can be possible that you need to recalibrate the motor units. You will find instructions for this in the NT Head user manual in our support section.
There are 2 test you can do to find out if you need to recalibrate the motors:
1) Units have a lot of play -> needs calibration
2) When you rotate the knurl screws, the stepper motor rotates heavy at some locations and lighter on other locations -> needs calibration
There are probably wrong motor profiles selected which results in the motor not receiving enough output current.
Make sure you select the right profiles for each motor. If you have a NT Head, select the proper profile. Motor profiles can be set within the Motor Quick-Setup Window of the PINE Motion App or under the Motor Settings.
The Controller outputs a default current of 0.4A. This is also the current the Default Profile in the App outputs. You either have to go to the Motor Settings and increase the motor current, or select a proper profile, which will set a usable output current for the selected device. The NT Head requires for example an output current of 1.0A
