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 are available up to ¼ hp and open-frame and NEMA 4X enclosed styles, and all come standard with a speed pot, knob and dial plate. An optional 0-10 Vdc analog input signal card is also available.