{"id":"automationdirect-gs21-10p5","model_id":"GS21-10P5","name":"AutomationDirect GS21-10P5","summary":"The GS21-10P5 is a DURApulse GS20 series general-purpose AC variable frequency drive. It accepts 120 VAC single-phase input and provides 230 VAC three-phase output for 3-phase induction and permanent magnet AC motors, rated 1/2 hp with a 2.5 A rating. It supports SVC, V/Hz, FOC and torque control modes and includes RS-485 Modbus RTU/ASCII communication, integrated dynamic braking and an optional EtherNet/IP and Modbus TCP card.","study_notes":["Single-phase 120 VAC input; three-phase 230 VAC output.","Variable torque rating is 2.7 A.","Control modes: SVC, V/Hz, FOC and torque.","Output frequency range 0.1–599 Hz; carrier frequency 2–15 kHz.","Integrated dynamic braking and built-in reverse capability.","RS-485 (RJ45) and USB B ports; Modbus RTU/ASCII slave up to 115.2 kbaud.","Two analog inputs, one analog output, seven discrete inputs and three discrete outputs.","Discrete output type is relay/sinking/sourcing with one Form C (SPDT) relay.","Programming language is ladder; spring clamp terminals.","Optional EtherNet/IP and Modbus TCP card available.","For use with 3-phase induction and permanent magnet AC motors.","Integrated EMI filter: No."],"safety_notes":["Built-in Safe Torque Off (STO).","User-supplied external fuse required.","UL Listed file E198015; CE; RoHS compliant.","No UL Recognized, UL Hazardous or CSA file listed."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/general_purpose_vfds/gs21-10p5","title":"DURApulse AC General Purpose Drive: 120 VAC, 1/2hp with 1-phase input, (VFD) (PN# GS21-10P5) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS21-10P5_cutsheet.pdf","title":"GS21 10P5 cutsheet","accessed":"2026-10-26"}],"verification":{"status":"source_checked","checked_at":"2026-10-26","values":10,"method":"llm_source_check"},"updated_at":"2026-10-26","type":"hardware","spec":{"category":"vfd","manufacturer":"automationdirect","controllers":[],"supply_voltage":"120 VAC","rated_current_a":2.5,"frame_size":"A3","output_type":"PWM output","ip_rating":"IP20","operating_temp_min_c":-20,"operating_temp_max_c":50,"joints":[],"protocols":["modbus-rtu","modbus-ascii"],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/automationdirect-gs21-10p5","license":"https://creativecommons.org/licenses/by/4.0/"}