RBT Pot Rotation

After extended use, or knocks in transit, we have seen a few cases where the potentiometer fitted to our RBT series of hand control boxes rotated slightly in their mounting brackets.

The symptoms depend on the controller model and settings;

1. On the DNO and 4QD-200 / 300 the motor will not stop completely, or change into reverse.
2. On the Pro-150 it may cause a HL fault code.
3. On the Pro-100 / 160 / 360 series it may cause a P1 High pot lockout fault code.

The photo below shows the green body of the pot in its correct position, rotated fully anti-clockwise with the solder tags slightly below the horizontal.

If yours is different to this, press gently down on the point indicated above to rotate the pot in its mounting, and then tighten the pot nut with a 14mm spanner.

An alternative approach if you have a Pro-100 / 160 / 360 is to increase the “Lockout” setting in the Throttle settings section of the menu [the same feature is called HPLO in the Pro-150].

Another alternative is to use the “pot learn” function to teach the controller the zero position of the pot in the RBT.