Many attachments also feature integrated electronics. “Recognizing the popularity of electrical accessory options, Case Alpha Series machines are available with optional pre-wiring to accept electrically controlled accessories such as brooms and rock saws,” says O’Brien. “A 14-pin electric system provides four independent activation systems that can be called up with the touch of a button on the control handle. This operates a fully proportional auxiliary hydraulic system, giving the operator pinpoint control of hydraulic flow in either direction. It has detents in both directions for continuous operation, resulting in less operator fatigue and more precise work.”
Most manufacturers offer several control options, with electrohydraulic (EH) controls providing the highest degree of customization. “Contractors who put multiple operators on each machine will benefit most from EH switchable controls,” says O’Brien.
EH controls allow the operator to switch between “H” pattern and “ISO” pattern with a touch of a button. “Case EH controls enable multiple operators to preset their preferred speed levels for bucket, boom and travel functions, in addition to controlling the sensitivity of the boom and the travel controls,” O’Brien indicates.
“As almost all machines now come with EH controls, the ability to control the reaction sensitivity and the speed of that reaction has become very important,” says Kaiser. “Being able to preset the machine to how the operator wants it to respond is critical to operator productivity. Going even further, to be able to offer additional presets so operators can hit their personal preset and the machine will be ready to respond to how each operator prefers to run it is an added bonus.
“I think it is so important,” he adds, “it should be standard equipment on machines equipped with EH controls.”