In what situations do timeout and current protection trip on the KTS200?
The KTS200's GRV485 control unit has current protection and timeout control at hardware level. The current protection cuts the movement if a jack draws more current than expected - mechanical seizing, an obstruction, overload. The timeout control stops the operation if a movement is not completed within the foreseen time. Both exist to protect the mechanism and the electrics.
Typical situations that trigger the current protection:
- Seizing due to a stone, ice, mud or corrosion in the jack's path of travel.
- The jack bearing against a hard obstruction.
- The load being unevenly distributed over the four jacks and a single jack being overstrained.
- A voltage drop due to a weak battery; the motor draws more current to do the same work.
Typical situations that trigger the timeout control:
- If the jack cannot reach the ground at all (ground too low, vehicle in too high a position).
- If on soft ground the jack keeps sinking in and the target tilt cannot be locked onto.
- If the motor moves very slowly and does not fit within the foreseen time.
When these protections trip, the right reflex is not to restart the system over and over but to find the cause. In order, charge the battery fully, clean under the jack and its path of travel, put a load-spreading plate on the ground and, if necessary, move the vehicle to a more suitable spot.
Trying to disable the protection or choosing a line fuse larger than necessary invites the very damage the protection exists to prevent. If the problem recurs, contact technical support for a remote parameter check; the system is covered by a 2 year warranty.
Full coverage of the topic: Guide to automatic RV levelling