{"id":"automationdirect-gs21-20p2","model_id":"GS21-20P2","name":"AutomationDirect GS21-20P2","summary":"The AutomationDirect GS21-20P2 is a DURApulse GS20 series general-purpose AC variable frequency drive in an A1 frame. It accepts single-phase 230 VAC input and provides three-phase 230 VAC output for 3-phase induction and permanent magnet AC motors. It supports SVC, V/Hz, FOC and torque control modes and includes integrated dynamic braking, RS-485 communication and built-in Safe Torque Off.","study_notes":["GS20 series general-purpose drive; A1 frame.","Single-phase 230 VAC input; three-phase 230 VAC output.","Control modes: SVC, V/Hz, FOC or torque.","Integrated dynamic braking; built-in reverse capability; no integrated EMI filter; not internally bypassed.","RS-485 (RJ45) and USB B ports; Modbus RTU/ASCII slave up to 115.2k baud.","Optional EtherNet/IP and Modbus TCP card available.","I/O includes 7 discrete inputs, 3 discrete outputs with one Form C relay, 2 analog inputs and 1 analog output.","Output frequency range 0.1–599 Hz; carrier frequency range 2–15 kHz; spring clamp terminals.","For use with 3-phase induction and permanent magnet AC motors; programming language is ladder.","Variable torque amperage rating is 1.8 A."],"safety_notes":["Built-in Safe Torque Off (STO).","IP20 enclosure; operating temperature range -20 to +50 °C.","UL Listed File # E198015; CE; RoHS.","User-supplied external fuse required."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/general_purpose_vfds/gs21-20p2","title":"DURApulse AC General Purpose Drive: 230 VAC, 1/4hp with 1-phase input, (VFD) (PN# GS21-20P2) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS21-20P2_cutsheet.pdf","title":"GS21 20P2 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":"230 VAC, 1-phase","rated_power_kw":0.186424968,"rated_current_a":1.6,"frame_size":"A1","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-gs21-20p2","license":"https://creativecommons.org/licenses/by/4.0/"}