For clarity I’ll briefly summarise the evolution of this product.
Initially we had a mobile screen with only 4 pushbuttons that simulated the ewiks switch panel: slam on and slam off, forwards and backwards on 2 motors. Full power or no power – nothing in between.
The we added motor current measurement and limiting, by depowering the motor when the current went over the 30A limit. Currents were also displayed on the screen for user info. This adaption came circuit breakers to replace the fuses, which came as standard equipment from ewiks.
Then we added the minimal step – Inch Mode, where a short power pulse was sent to the motor to bump the mover just a short distance.
Then we added battery voltage monitoring and display on the screen.
Then we added water flow monitoring and display showing water consumption from two tanks.
Then we added motor current ramping (known as Soft Start) and differential motor power (called Combo Turns). This primarily for 4-wheel caravans that otherwise are very awkward to turn with the all-or-nothing ewiks control gear. But the increased complexity now forced us to build everything into one enclosure – the MotorPac, and replace the entire ewiks control gear with a single unit that does everything – remote control, motor control, current ramping, voltage monitoring, current monitoring and limiting, differential turns, and water tank monitoring. For 4-wheel applications we supply an extension module which drives the second set of wheels exactly like the first,
Then we added leveling control for the benefit of overseas users who have access to electromechanical lifters that are not generally available in SA.
Then (thanks in part to you) we prototyped the adaption of 12VDC gearmotors to existing Winterhoff-style corner steadies and controlled by an extension module to the standard MotorPac.
And now finally we are removing the mover control components from the MotorPac and keeping just the leveler control, the battery monitoring, and the water tank monitoring. This saves about R700 of cost over the MotorPac with leveler extension, but the unit cannot be upgraded at a later time to include mover controls.
So yes, we can certainly help your colleague.