IronHorse GSD1 series DC drives are high-performance Pulse-Width-Modulated (PWM) controllers for 12 to 36 V battery/solar-powered equipment providing smooth control with high-efficiency operation. Design features include adjustable maximum/minimum speed, current limit, I.R. compensation and acceleration. The adjustable current-limit feature protects the control, battery and motor from sustained overloads. GSD1 series DC drives, available up to ¼ hp, are available in open-frame and NEMA 4X enclosed styles, and all come standard with a speed pot, knob, and dial plate; an optional 0-10VDC analog input signal card is also available.