{"id":"automationdirect-gs21-10p2","model_id":"GS21-10P2","name":"AutomationDirect GS21-10P2","summary":"The GS21-10P2 is an enclosed DURApulse GS20 series general-purpose AC variable frequency drive. It runs from a single-phase 120 VAC supply and produces three-phase 230 VAC output for a 1/4 hp motor. It supports SVC, V/Hz, FOC and torque control modes, has an RS-485 port for Modbus RTU/ASCII, integrated dynamic braking and built-in Safe Torque Off.","study_notes":["Rated 1/4 hp with 1-phase input; 1.6 A amperage rating and 1.8 A variable torque rating.","Input is 120 VAC single-phase; output is 230 VAC three-phase.","Control modes: SVC, V/Hz, FOC or torque.","Carrier frequency range 2-15 kHz; output frequency range 0.1-599 Hz.","Communications: one RS-485 (RJ45) port and one USB B port; Modbus RTU Slave and Modbus ASCII Slave up to 115.2k baud.","EtherNet/IP and Modbus TCP require an optional communication card; they are not built in.","I/O: 7 discrete inputs (24 VDC, sinking/sourcing), 3 discrete outputs (relay/sinking/sourcing, one Form C SPDT relay), 2 analog inputs and 1 analog output.","Analog input ranges 0-20 mA and 4-20 mA, +/-10 VDC, with 10-bit and 12-bit resolution; analog output 0-20 mA, 4-20 mA, 0-10 VDC at 10-bit.","Input signals accepted: 4-20 mA, voltage, potentiometer or pulse train; output type is PWM.","Programming language is ladder; connector type is spring clamp terminals.","Intended for 3-phase induction and permanent magnet AC motors.","AutomationDirect lists the item shipping weight as 2.3 lb and country of origin as India."],"safety_notes":["Safe Torque Off (STO) is built-in.","A user-supplied external fuse is required.","UL Listed File # E198015; CE declaration and RoHS status Yes; EU REACH document available; CSA file: none.","The drive has no integrated EMI filter.","Rated temperature range -20 to +50 deg C; enclosure type IP20, panel or wall mounting."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/general_purpose_vfds/gs21-10p2","title":"DURApulse AC General Purpose Drive: 120 VAC, 1/4hp with 1-phase input, (VFD) (PN# GS21-10P2) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS21-10P2_cutsheet.pdf","title":"GS21 10P2 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":1.6,"frame_size":"A1","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-gs21-10p2","license":"https://creativecommons.org/licenses/by/4.0/"}